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[{"id":20141,"new":"<em>Corridors<\/em> shall be fire-resistance rated in accordance with Table 1020.1. The <em>corridor<\/em> walls required to be fire-resistance rated shall comply with Section 708 for <em>fire partitions<\/em>.<br \/><br \/>In addition, corridors in buildings of Types IIB, IIIB, and VB construction and assigned Risk Categories III and IV in Table 1604.5, other than Group I, shall have a fire resistance rating of not less than 1 hour where such buildings are any of the following:<br \/><br \/><ol><li>Assigned a Seismic Design Category C or D in Table 1613.3.5(1).<\/li>\n<li>Located in a flood hazard area established in accordance with Section 1612.3.<\/li>\n<li>Located in a <em>hurricane-prone regions<\/em>.<\/li>\n<\/ol><ul class=\"exception\"><li><strong>Exceptions:<\/strong><ol><li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group E where each room that is used for instruction has not less than one door opening directly to the exterior and rooms for assembly purposes have not less than one-half of the required <em>means of egress<\/em> doors opening directly to the exterior. Exterior doors specified in this exception are required to be at ground level.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> contained within a <em>dwelling unit<\/em> or <em>sleeping unit<\/em> in an occupancy in Groups I-1 and R.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in <em>open parking garages<\/em>.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group B that is a space requiring only a single <em>means of egress<\/em> complying with Section 1006.2.<\/li>\n<li><em>Corridors<\/em> adjacent to the <em>exterior walls<\/em> of buildings shall be permitted to have unprotected openings on unrated <em>exterior walls<\/em> where unrated walls are permitted by Table 602 and unprotected openings are permitted by Table 705.8.<\/li>\n<\/ol><\/li>\n<\/ul>","old":"<i>Corridors<\/i> shall be fire-resistance rated in accordance with Table 1020.1. The <i>corridor<\/i> walls required to be fire-resistance rated shall comply with Section 708 for <i>fire partitions<\/i>.<ul class=\"exception\"><li><b>Exceptions:<\/b><ol><li>A <i>fire-resistance rating<\/i> is not required for <i>corridors<\/i> in an occupancy in Group E where each room that is used for instruction has not less than one door opening directly to the exterior and rooms for assembly purposes have not less than one-half of the required <i>means of egress<\/i> doors opening directly to the exterior. Exterior doors specified in this exception are required to be at ground level.<\/li><li>A <i>fire-resistance rating<\/i> is not required for <i>corridors<\/i> contained within a <i>dwelling unit<\/i> or <i>sleeping unit<\/i> in an occupancy in Groups I-1 and R.<\/li><li>A <i>fire-resistance rating<\/i> is not required for <i>corridors<\/i> in <i>open parking garages<\/i>.<\/li><li>A <i>fire-resistance rating<\/i> is not required for <i>corridors<\/i> in an occupancy in Group B that is a space requiring only a single <i>means of egress<\/i> complying with Section 1006.2.<\/li><li><i>Corridors<\/i> adjacent to the <i>exterior walls<\/i> of buildings shall be permitted to have unprotected openings on unrated <i>exterior walls<\/i> where unrated walls are permitted by Table 602 and unprotected openings are permitted by Table 705.8.<\/li><\/ol><\/li><\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1020.1&nbsp;Construction.<\/strong>&nbsp;<em>Corridors<\/em> shall be fire-resistance rated in accordance with Table 1020.1. The <em>corridor<\/em> walls required to be fire-resistance rated shall comply with Section 708 for <em>fire partitions<\/em>.<br class=\"diffmod\" \/><br \/><ins class=\"diffins\">In addition, corridors in buildings of Types IIB, IIIB, and VB construction and assigned Risk Categories III and IV in Table 1604.5, other than Group I, shall have a fire resistance rating of not less than 1 hour where such buildings are any of the following:<\/ins><br class=\"diffmod\" \/><br \/>\n<ol class=\"diff-list\">\n<li class=\" normal\"><ins class=\"diffins\">Assigned a Seismic Design Category C or D in Table 1613.3.5(1).<\/ins><\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\"diffmod normal\"><ins class=\"diffins\">Located in a flood hazard area established in accordance with Section 1612.3.<\/ins><\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\"diffmod normal\"><ins class=\"diffins\">Located in a <\/ins><em class=\"diffmod\"><ins class=\"diffins\">hurricane-prone regions<\/ins><\/em><ins class=\"diffins\">.<\/ins><\/li>\n<ins class=\"diffins\"> <\/ins><\/ol>\n<ul class=\"exception\">\n<li><strong>Exceptions:<\/strong><\/li>\n<li>\n<ol>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group E where each room that is used for instruction has not less than one door opening directly to the exterior and rooms for assembly purposes have not less than one-half of the required <em>means of egress<\/em> doors opening directly to the exterior. Exterior doors specified in this exception are required to be at ground level.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> contained within a <em>dwelling unit<\/em> or <em>sleeping unit<\/em> in an occupancy in Groups I-1 and R.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in <em>open parking garages<\/em>.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group B that is a space requiring only a single <em>means of egress<\/em> complying with Section 1006.2.<\/li>\n<li><em>Corridors<\/em> adjacent to the <em>exterior walls<\/em> of buildings shall be permitted to have unprotected openings on unrated <em>exterior walls<\/em> where unrated walls are permitted by Table 602 and unprotected openings are permitted by Table 705.8.<\/li>\n<\/ol>\n<\/li>\n<ins class=\"diffins\"> <\/ins><\/ul>\n<\/div>\n<\/div>\n<\/div>"},{"id":22579,"new":"<p>Air handling equipment and HVAC equipment shall be designed and installed to limit the amount of airflow that bypasses the air filters. Filter access doors in ducts and HVAC equipment shall be designed to limit the amount of airflow that bypasses the filters. Channels, racks and other filter retaining constructions shall be sealed to the duct or housing of the HVAC equipment served by the filters. Field or shop fabricated spacers shall not be installed for the purpose of replacing the intended size filter with a smaller size filter. <\/p>","old":"<p>Air handling equipment and HVAC equipment shall be designed and installed to limit the amount of airflow that bypasses the air filters and shall comply with the following: <\/p>\n<ol><li>Channels, racks and other filter retaining constructions that do not seal tightly to the filter frame by means of a friction fit shall be provided with a means to seal the filter frame to the filter retaining construction.<\/li>\n<li>Where standard size filters are installed in banks of multiple filters, gaskets shall seal the gap between the frames of adjacent filters. As an alternative to gaskets, the frames of adjacent filters shall be compressed by means of spring elements that are built into the filter retaining construction.<\/li>\n<li>Channels, racks and other filter retaining constructions shall be sealed to the duct or housing of the HVAC equipment served by the filters.<\/li>\n<li>Filter access doors in ducts and HVAC equipment shall be designed to limit the amount of airflow that bypasses the filters.<\/li>\n<li>Field or shop fabricated spacers shall not be installed for the purpose of replacing the intended size filter with a smaller size filter.<\/li>\n<li>Gaskets and seals shall be provided with access for repair, maintenance and replacement.<\/li>\n<\/ol>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>605.4&nbsp;Bypass pathways<\/strong>&nbsp; Air handling equipment and HVAC equipment shall be designed and installed to limit the amount of airflow that bypasses the air filters<ins class=\"diffins\">.&nbsp;Filter access doors in ducts<\/ins> and <del class=\"diffmod\">shall comply with the following:&nbsp;<br \/><\/del>\n<ol class=\"diff-list\">\n<li class=\"diffmod removed\"><span style=\"text-decoration: line-through;\"><del class=\"diffmod\">Channels, racks and other filter retaining constructions that do not seal tightly to the filter frame by means of a friction fit<\/del><\/span><ins class=\"diffmod\">HVAC equipment<\/ins> shall be<span style=\"text-decoration: line-through;\"> <del class=\"diffmod\">provided with a means<\/del><\/span><ins class=\"diffmod\">designed<\/ins> to<span style=\"text-decoration: line-through;\"> <del class=\"diffmod\">seal<\/del><\/span><ins class=\"diffmod\">limit<\/ins> the<span style=\"text-decoration: line-through;\"> <del class=\"diffmod\">filter frame to<\/del><\/span><ins class=\"diffmod\">amount of airflow that bypasses<\/ins> the<span style=\"text-decoration: line-through;\"> <del class=\"diffdel\">filter retaining construction.&nbsp;<\/del><\/span><\/li>\n<li class=\"diffmod removed\"><span style=\"text-decoration: line-through;\"><del class=\"diffdel\">Where standard size filters are installed in banks of multiple <\/del><\/span><del class=\"diffdel\">filters<\/del><span style=\"text-decoration: line-through;\"><del class=\"diffdel\">, gaskets shall seal the gap between the frames of adjacent <\/del><\/span>filters<span style=\"text-decoration: line-through;\">.<del class=\"diffmod\"> As an alternative to gaskets, the frames of adjacent filters shall be compressed by means of spring elements that are built into the filter retaining construction.&nbsp;<\/del><\/span><\/li>\n<li class=\"diffmod removed\">Channels, racks and other filter retaining constructions shall be sealed to the duct or housing of the HVAC equipment served by the filters.&nbsp;<\/li>\n<li class=\"diffmod removed\"><span style=\"text-decoration: line-through;\">Filter access doors in ducts and HVAC equipment shall be designed to limit the amount of airflow that bypasses the filters.&nbsp;<\/span><\/li>\n<li class=\"diffmod removed\">Field or shop fabricated spacers shall not be installed for the purpose of replacing the intended size filter with a smaller size filter.&nbsp;<\/li>\n<li class=\"diffmod removed\"><span style=\"text-decoration: line-through;\">Gaskets and seals shall be provided with access for repair, maintenance and replacement.<\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>"},{"id":22658,"new":"<div>The path of egress travel to an exit shall not pass through more than one adjacent story.<\/div>\n<div> <\/div>\n<div style=\"padding-left:30px;\"><strong>Exception:<\/strong> The path of egress travel to an exit shall be permitted to pass through more than one adjacent story in any of the following:<\/div>\n<ol><li>In Group R-1, R-2 or R-3 occupancies, exit access stairways and ramps connecting four stories or less serving and contained within an individual dwelling unit or sleeping unit or live\/work unit.<\/li>\n<li>Exit access stairways serving and contained within a Group R-3 congregate residence or a Group R-4 facility.<\/li>\n<li>Exit access stairways and ramps in open parking garages that serve only the parking garage.<\/li>\n<li>Exit access stairways and ramps in buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, where the area of the vertical opening between stories does not exceed twice the horizontal projected area of the stairway or ramp and the opening is protected by a draft curtain and closely spaced sprinklers in accordance with NFPA 13. In other than Group B and M occupancies, this provision is limited to openings that do not connect more than four stories.<\/li>\n<li>Exit access stairways and ramps within an atrium complying with the provisions of Section 404.<\/li>\n<li>Exit access stairways and ramps serving open-air assembly seating complying with the exit access travel distance requirements of Section 1029.7.<\/li>\n<li>Exit access stairways and ramps between the balcony, gallery or press box and the main assembly floor in occupancies such as theaters, places of religious worship, auditoriums and sports facilities.<\/li>\n<\/ol><div> <\/div>","old":"<div>The path of egress travel to an exit shall not pass through more than one adjacent story.<\/div>\n<div> <\/div>\n<div style=\"padding-left:30px;\"><strong>Exception:<\/strong> The path of egress travel to an exit shall be permitted to pass through more than one adjacent story in any of the following:<\/div>\n<ol><li>In Group R-1, R-2 or R-3 occupancies, exit access stairways and ramps connecting four stories or less serving and contained within an individual dwelling unit or sleeping unit or live\/work unit.<\/li>\n<li>Exit access stairways serving and contained within a Group R-3 congregate residence or a Group R-4 facility.<\/li>\n<li>Exit access stairways and ramps in open parking garages that serve only the parking garage.<\/li>\n<li>Exit access stairways and ramps serving open-air assembly seating complying with the exit access travel distance requirements of Section 1029.7.<\/li>\n<li>Exit access stairways and ramps between the balcony, gallery or press box and the main assembly floor in occupancies such as theaters, places of religious worship, auditoriums and sports facilities.<\/li>\n<\/ol><div> <\/div>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1006.3.1&nbsp;Adjacent story.<\/strong>&nbsp;\n<div>The path of egress travel to an exit shall not pass through more than one adjacent story.<\/div>\n<div>&nbsp;<\/div>\n<div style=\"padding-left: 30px;\"><strong>Exception:<\/strong> &nbsp;The path of egress travel to an exit shall be permitted to pass through more than one adjacent story in any of the following:<\/div>\n<ol class=\"diff-list\">\n<li class=\" normal\">In Group R-1, R-2 or R-3 occupancies, exit access stairways and ramps connecting four stories or less serving and contained within an individual dwelling unit or sleeping unit or live\/work unit.<\/li>\n<li class=\" normal\">Exit access stairways serving and contained within a Group R-3 congregate residence or a Group R-4 facility.<\/li>\n<li class=\" normal\">Exit access stairways and ramps in open parking garages that serve only the parking garage.<\/li>\n<li class=\" normal\"><span style=\"text-decoration: underline;\">Exit access stairways and ramps<\/span> <ins class=\"diffins\">in buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, where the area of the vertical opening between stories does not exceed twice the horizontal projected area of the stairway or ramp and the opening is protected by a draft curtain and closely spaced sprinklers in accordance with NFPA 13. &nbsp;In other than Group B and M occupancies, this&nbsp;provision is limited to openings that do not connect more than four stories.<\/ins><\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\"diffmod normal\"><ins class=\"diffins\">Exit access stairways and ramps within an atrium complying with the provisions of Section 404.<\/ins><\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\"diffmod normal\"><ins class=\"diffins\"><\/ins>Exit access stairways and ramps serving open-air assembly seating complying with the exit access travel distance requirements of Section 1029.7.<\/li>\n<li class=\" normal\">Exit access stairways and ramps between the balcony, gallery or press box and the main assembly floor in occupancies such as theaters, places of religious worship, auditoriums and sports facilities.<\/li>\n<\/ol>\n<div>&nbsp;<\/div>\n<\/div>\n<\/div>\n<\/div>"},{"id":23056,"new":"<em>Corridors<\/em> shall be fire-resistance rated in accordance with Table 1020.1 and where applicable in Section 1020.1.1. The <em>corridor<\/em> walls required to be fire-resistance rated shall comply with Section 708 for <em>fire partitions<\/em>.<br \/><ul class=\"exception\"><li><strong>Exceptions:<\/strong><\/li>\n<li>\n<ol><li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group E where each room that is used for instruction has not less than one door opening directly to the exterior and rooms for assembly purposes have not less than one-half of the required <em>means of egress<\/em> doors opening directly to the exterior. Exterior doors specified in this exception are required to be at ground level.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> contained within a <em>dwelling unit<\/em> or <em>sleeping unit<\/em> in an occupancy in Groups I-1 and R.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in <em>open parking garages<\/em>.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group B that is a space requiring only a single <em>means of egress<\/em> complying with Section 1006.2.<\/li>\n<li><em>Corridors<\/em> adjacent to the <em>exterior walls<\/em> of buildings shall be permitted to have unprotected openings on unrated <em>exterior walls<\/em> where unrated walls are permitted by Table 602 and unprotected openings are permitted by Table 705.8.<\/li>\n<\/ol><\/li>\n<\/ul>","old":"<em>Corridors<\/em> shall be fire-resistance rated in accordance with Table 1020.1. The <em>corridor<\/em> walls required to be fire-resistance rated shall comply with Section 708 for <em>fire partitions<\/em>.<br \/><br \/>In addition, corridors in buildings of Types IIB, IIIB, and VB construction and assigned Risk Categories III and IV in Table 1604.5, other than Group I, shall have a fire resistance rating of not less than 1 hour where such buildings are any of the following:<br \/><br \/><ol><li>Assigned a Seismic Design Category C or D in Table 1613.3.5(1).<\/li>\n<li>Located in a flood hazard area established in accordance with Section 1612.3.<\/li>\n<li>Located in a <em>hurricane-prone regions<\/em>.<\/li>\n<\/ol><ul class=\"exception\"><li><strong>Exceptions:<\/strong><ol><li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group E where each room that is used for instruction has not less than one door opening directly to the exterior and rooms for assembly purposes have not less than one-half of the required <em>means of egress<\/em> doors opening directly to the exterior. Exterior doors specified in this exception are required to be at ground level.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> contained within a <em>dwelling unit<\/em> or <em>sleeping unit<\/em> in an occupancy in Groups I-1 and R.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in <em>open parking garages<\/em>.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group B that is a space requiring only a single <em>means of egress<\/em> complying with Section 1006.2.<\/li>\n<li><em>Corridors<\/em> adjacent to the <em>exterior walls<\/em> of buildings shall be permitted to have unprotected openings on unrated <em>exterior walls<\/em> where unrated walls are permitted by Table 602 and unprotected openings are permitted by Table 705.8.<\/li>\n<\/ol><\/li>\n<\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1020.1&nbsp;Construction.<\/strong>&nbsp;<em>Corridors<\/em> shall be fire-resistance rated in accordance with Table 1020.1<ins class=\"diffins\"> and where applicable in Section 1020.1.1<\/ins>. The <em>corridor<\/em> walls required to be fire-resistance rated shall comply with Section 708 for <em>fire partitions<\/em>.<br \/><br class=\"diffmod\" \/><del class=\"diffdel\">In addition, corridors in buildings of Types IIB, IIIB, and VB construction and assigned Risk Categories III and IV in Table 1604.5, other than Group I, shall have a fire resistance rating of not less than 1 hour where such buildings are any of the following:<\/del><br class=\"diffmod\" \/><br \/>\n<ol class=\"diff-list\">\n<li class=\" removed\"><del class=\"diffdel\">Assigned a Seismic Design Category C or D in Table 1613.3.5(1).<\/del><\/li>\n<del class=\"diffdel\"> <\/del>\n<li class=\"diffmod removed\"><del class=\"diffdel\">Located in a flood hazard area established in accordance with Section 1612.3.<\/del><\/li>\n<del class=\"diffdel\"> <\/del>\n<li class=\"diffmod removed\"><del class=\"diffdel\">Located in a <\/del><em class=\"diffmod\"><del class=\"diffdel\">hurricane-prone regions<\/del><\/em><del class=\"diffdel\">.<\/del><\/li>\n<del class=\"diffdel\"> <\/del><\/ol>\n<ul class=\"exception\">\n<li><strong>Exceptions:<\/strong><\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\"diffmod\"><ins class=\"diffins\"> <\/ins><br \/>\n<ol>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group E where each room that is used for instruction has not less than one door opening directly to the exterior and rooms for assembly purposes have not less than one-half of the required <em>means of egress<\/em> doors opening directly to the exterior. Exterior doors specified in this exception are required to be at ground level.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> contained within a <em>dwelling unit<\/em> or <em>sleeping unit<\/em> in an occupancy in Groups I-1 and R.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in <em>open parking garages<\/em>.<\/li>\n<li>A <em>fire-resistance rating<\/em> is not required for <em>corridors<\/em> in an occupancy in Group B that is a space requiring only a single <em>means of egress<\/em> complying with Section 1006.2.<\/li>\n<li><em>Corridors<\/em> adjacent to the <em>exterior walls<\/em> of buildings shall be permitted to have unprotected openings on unrated <em>exterior walls<\/em> where unrated walls are permitted by Table 602 and unprotected openings are permitted by Table 705.8.<\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>"},{"id":23088,"new":"<p>In addition to the <em>means of egress<\/em> required by this chapter, <em>emergency escape and rescue openings <\/em>shall be provided in the following occupancies:<\/p>\n<div style=\"padding-left:30px;\">1. Group R-1 and R-2 occupancies.<\/div>\n<div style=\"padding-left:30px;\">2. Group R-1 and R-2 occupancies located on stories with one exit or access to one exit where permitted by Tables 1006.3.2(1) and 1006.3.2(2). <\/div>\n<div style=\"padding-left:30px;\">3. Group R-3 occupancies.<\/div>\n<p><br \/><em>Basements<\/em> and sleeping rooms below the fourth story above <em>grade plane<\/em> shall have at least one exterior <em>emergency escape and rescue opening<\/em> in accordance with this section. Where <em>basements<\/em> contain one or more sleeping rooms, <em>emergency escape and rescue openings<\/em> shall be required in each sleeping room, but shall not be required in adjoining areas of the <em>basement<\/em>. Such openings shall open directly into a <em>public way<\/em> or to a <em>yard <\/em>or<em> court<\/em> that opens to a <em>public way<\/em>.<\/p>\n<ul class=\"exception\"><li><strong>Exceptions:<\/strong><br \/><ol><li><em>Emergency escape and rescue opening<\/em> are not required from Group R-1 and R-2 occupancies where each story has access to at least two exits or access to exits and the building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.<\/li>\n<li><em>Basements<\/em> with a ceiling height of less than 80 inches (2032 mm) shall not be required to have <em>emergency escape and rescue openings<\/em>.<\/li>\n<li><em>Emergency escape and rescue openings<\/em> are not required from <em>basements<\/em> or sleeping rooms that have an <em>exit<\/em> door or <em>exit access<\/em> door that opens directly into a <em>public way<\/em> or to a <em>yard<\/em>, <em>court<\/em> or exterior exit balcony that opens to a <em>public way<\/em>.<\/li>\n<li><em>Basements<\/em> without <em>habitable spaces<\/em> and having not more than 200 square feet (18.6 m<sup>2<\/sup>) in floor area shall not be required to have <em>emergency escape and rescue openings<\/em>.<\/li>\n<\/ol><\/li>\n<\/ul>","old":"<p>In addition to the <em>means of egress<\/em> required by this chapter, provisions shall be made for <em>emergency escape and rescue openings<\/em> in Group R occupancies. <em>Basements<\/em> and sleeping rooms below the fourth story above <em>grade plane<\/em> shall have at least one exterior <em>emergency escape and rescue opening<\/em> in accordance with this section. Where <em>basements<\/em> contain one or more sleeping rooms, <em>emergency escape and rescue openings<\/em> shall be required in each sleeping room, but shall not be required in adjoining areas of the <em>basement<\/em>. Such openings shall open directly into a <em>public way<\/em> or to a <em>yard <\/em>or<em> court<\/em> that opens to a <em>public way<\/em>.<\/p>\n<ul class=\"exception\"><li><strong>Exceptions:<\/strong><ol><li><em>Groups R-1 and R-2 occupancies are not required to provide emergency and escape openings where they comply with all of the following:<\/em><ol><li><em>Each story has access to two or more means of egress.<br \/><\/em><\/li>\n<li><em>The building is constructed of Type I, Type II, Type IIIA or Type IV construction.<\/em><\/li>\n<li><em>The building is equipped throughout with an approved automatic sprinkler system in accordance with Sections 903.3.1.1 or 903.3.3.2.<\/em><\/li>\n<\/ol><\/li>\n<li><em>The emergency escape and rescue opening is permitted to open onto a balcony within an atrium in accordance with the requirements of Section 404, provided the balcony provides access to an exit and the dwelling unit or sleeping unit has a means of egress that is not open to the atrium.<\/em><\/li>\n<li><em>Basements<\/em> with a ceiling height of less than 80 inches (2032 mm) shall not be required to have <em>emergency escape and rescue openings<\/em>.<\/li>\n<li><em>Emergency escape and rescue openings<\/em> are not required from <em>basements<\/em> or sleeping rooms that have an <em>exit<\/em> door or <em>exit access<\/em> door that opens directly into a <em>public way<\/em> or to a <em>yard<\/em>, <em>court<\/em> or exterior exit balcony that opens to a <em>public way<\/em>.<\/li>\n<li><em>Basements<\/em> without <em>habitable spaces<\/em> and having not more than 200 square feet (18.6 m<sup>2<\/sup>) in floor area shall not be required to have <em>emergency escape and rescue openings<\/em>.<\/li>\n<\/ol><\/li>\n<\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1030.1&nbsp;General.<\/strong>&nbsp; In addition to the <em>means of egress<\/em> required by this chapter, <del class=\"diffdel\">provisions shall be made for <\/del><em>emergency escape and rescue openings<ins class=\"diffins\"> <\/ins><\/em><ins class=\"diffins\">shall be provided<\/ins> in <ins class=\"diffins\">the following occupancies:<\/ins><ins class=\"diffins\"> <\/ins>\n<div class=\"diffmod\" style=\"padding-left: 30px;\"><ins class=\"diffins\">1. <\/ins>Group <del class=\"diffmod\">R<\/del> <ins class=\"diffmod\">R-1 and R-2<\/ins> occupancies.<del class=\"diffmod\"> <\/del><\/div>\n<ins class=\"diffmod\"> <\/ins>\n<div class=\"diffmod\" style=\"padding-left: 30px;\"><ins class=\"diffmod\">2. Group R-1 and R-2 occupancies located on stories with one exit or access to one exit where permitted by Tables 1006.3.2(1) and 1006.3.2(2).&nbsp;<\/ins><\/div>\n<ins class=\"diffmod\"> <\/ins>\n<div class=\"diffmod\" style=\"padding-left: 30px;\"><ins class=\"diffmod\">3. Group R-3 occupancies.<\/ins><\/div>\n<ins class=\"diffmod\"> <\/ins>\n<p class=\"diffmod\"><br \/><em>Basements<\/em> and sleeping rooms below the fourth story above <em>grade plane<\/em> shall have at least one exterior <em>emergency escape and rescue opening<\/em> in accordance with this section. Where <em>basements<\/em> contain one or more sleeping rooms, <em>emergency escape and rescue openings<\/em> shall be required in each sleeping room, but shall not be required in adjoining areas of the <em>basement<\/em>. Such openings shall open directly into a <em>public way<\/em> or to a <em>yard <\/em>or<em> court<\/em> that opens to a <em>public way<\/em>.<\/p>\n<ul class=\"exception\">\n<li><strong>Exceptions:<\/strong><br class=\"diffmod\" \/><span style=\"text-decoration: line-through;\"><em class=\"diffmod\"><del class=\"diffmod\">1. Groups<\/del> R-1 and R-2 occupancies <del class=\"diffdel\">are not required to provide emergency and escape openings <\/del>where <del class=\"diffmod\">they comply with all of the following:<\/del><\/em><\/span><\/li>\n<li><span style=\"text-decoration: line-through;\"><em><del class=\"diffmod\">&nbsp;&nbsp;&nbsp;&nbsp; 1.1 Each<\/del> story has access to two<ins class=\"diffins\"> <\/ins>or <del class=\"diffmod\">more means of egress.<\/del><\/em><\/span><\/li>\n<li><span style=\"text-decoration: line-through;\"><em><del class=\"diffmod\">&nbsp;&nbsp;&nbsp;&nbsp; 1.2 The building is constructed of Type I, Type II, Type IIIA or Type IV construction.<\/del><\/em><\/span><\/li>\n<li><span style=\"text-decoration: line-through;\"><em><del class=\"diffmod\">&nbsp;&nbsp;&nbsp;&nbsp; 1.3 The<\/del> building is equipped throughout with an <del class=\"diffdel\">approved <\/del>automatic sprinkler system in accordance with <del class=\"diffmod\">Sections<\/del> 903.3.1.1 <del class=\"diffmod\">or 903.3.3.2.<\/del><\/em><\/span><del class=\"diffmod\"> <\/del><span style=\"text-decoration: line-through;\"><em><del class=\"diffmod\">2. <\/del><\/em><\/span><\/li>\n<li><span style=\"text-decoration: line-through;\"><em><del class=\"diffmod\">2. The&nbsp;<\/del><em class=\"diffmod\">emergency escape and rescue <del class=\"diffmod\">opening is permitted to open onto a balcony within an atrium in accordance with the requirements of Section 404, provided the balcony provides access to an exit and the dwelling unit or sleeping unit has a means of egress that is not open to the atrium<\/del><\/em>.<\/em><\/span><\/li>\n<li><span style=\"text-decoration: underline;\"><em>1. Emergency escape an rescue openings <\/em>are not required from Grooup R-1 and R-2 occupancies where each story has access to at least two exits or access to exits and the building is equipped throughouth with an automatic spinkler system in accordance with Section 903.3.1.1.<\/span><em>&nbsp;<\/em><\/li>\n<li><em>2. Basements<\/em> with a ceiling height of less than 80 inches (2032 mm) shall not be required to have <em>emergency escape and rescue openings<\/em>.<\/li>\n<li><em>3. Emergency escape and rescue openings<\/em> are not required from <em>basements<\/em> or sleeping rooms that have an <em>exit<\/em> door or <em>exit access<\/em> door that opens directly into a <em>public way<\/em> or to a <em>yard<\/em>, <em>court<\/em> or exterior exit balcony that opens to a <em>public way<\/em>.<\/li>\n<li><em>4. Basements<\/em> without <em>habitable spaces<\/em> and having not more than 200 square feet (18.6 m<sup>2<\/sup>) in floor area shall not be required to have <em>emergency escape and rescue openings<\/em>.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>"},{"id":23173,"new":"<p>Return air openings for heating, ventilation and air-conditioning systems shall comply with all of the following:<\/p>\n<ol><li>Openings shall not be located less than 10 feet (3048 mm) measured in any direction from an open combustion chamber or draft hood of another appliance located in the same room or space.<\/li>\n<li>Return air shall not be taken from a hazardous or insanitary location or a refrigeration room as defined in this code.<\/li>\n<li>The amount of return air taken from any room or space shall be not greater than the flow rate of supply air delivered to such room or space.<\/li>\n<li>Return and transfer openings shall be sized in accordance with the appliance or equipment manufacturer's installation instructions, ACCA Manual D or the design of the registered design professional.<\/li>\n<li>Return air taken from one dwelling unit shall not be discharged into another dwelling unit.<\/li>\n<li>Taking return air from a crawl space shall not be accomplished through a direct connection to the return side of a forced air furnace. Transfer openings in the crawl space enclosure shall not be prohibited.<\/li>\n<li>Return air shall not be taken from a closet, bathroom, toilet room, kitchen, garage, boiler room, furnace room, indoor swimming pool enclosure and associated deck area, or unconditioned attic.<\/li>\n<\/ol><ul class=\"exception\"><li><strong>Exceptions:<\/strong><\/li>\n<\/ul><ol><li>Taking return air from a kitchen is not prohibited where such return air openings serve the kitchen and are located not less than 10 feet (3048 mm) from the cooking appliances.<\/li>\n<li>Dedicated forced air systems serving only the garage shall not be prohibited from obtaining return air from the garage<\/li>\n<li>Dedicated HVAC systems serving indoor swimming pool enclosures and associated deck areas shall not be prohibited from obtaining return air from such swimming pool enclosures and associated deck areas<\/li>\n<\/ol>","old":"<p>Return air openings for heating, ventilation and air-conditioning systems shall comply with all of the following:<\/p>\n<ol><li>Openings shall not be located less than 10 feet (3048 mm) measured in any direction from an open combustion chamber or draft hood of another appliance located in the same room or space.<\/li>\n<li>Return air shall not be taken from a hazardous or insanitary location or a refrigeration room as defined in this code.<\/li>\n<li>The amount of return air taken from any room or space shall be not greater than the flow rate of supply air delivered to such room or space.<\/li>\n<li>Return and transfer openings shall be sized in accordance with the appliance or equipment manufacturer's installation instructions, ACCA Manual D or the design of the registered design professional.<\/li>\n<li>Return air taken from one dwelling unit shall not be discharged into another dwelling unit.<\/li>\n<li>Taking return air from a crawl space shall not be accomplished through a direct connection to the return side of a forced air furnace. Transfer openings in the crawl space enclosure shall not be prohibited.<\/li>\n<li>Return air shall not be taken from a closet, bathroom, toilet room, kitchen, garage, boiler room, furnace room or unconditioned attic.\n<ul class=\"exception\"><li><strong>Exceptions:<\/strong>\n<ol><li>Taking return air from a kitchen is not prohibited where such return air openings serve the kitchen and are located not less than 10 feet (3048 mm) from the cooking appliances.<\/li>\n<li>Dedicated forced air systems serving only the garage shall not be prohibited from obtaining return air from the garage<\/li>\n<\/ol><\/li>\n<\/ul><\/li>\n<li>Return air shall not be taken from indoor swimming pool enclosures and associated deck areas.\n<ul class=\"exception\"><li><strong>Exceptions:<\/strong>\n<ol><li>Where the air from such spaces is dehumidified in accordance with Sections 403.2.1 Item #2.<\/li>\n<li>Dedicated HVAC systems serving only such spaces.<\/li>\n<\/ol><\/li>\n<\/ul><\/li>\n<\/ol>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>601.5&nbsp;Return air openings.<\/strong>&nbsp; Return air openings for heating, ventilation and air-conditioning systems shall comply with all of the following:\n<ol class=\"diff-list\">\n<li class=\" normal\">Openings shall not be located less than 10 feet (3048 mm) measured in any direction from an open combustion chamber or draft hood of another appliance located in the same room or space.<\/li>\n<li class=\" normal\">Return air shall not be taken from a hazardous or insanitary location or a refrigeration room as defined in this code.<\/li>\n<li class=\" normal\">The amount of return air taken from any room or space shall be not greater than the flow rate of supply air delivered to such room or space.<\/li>\n<li class=\" normal\">Return and transfer openings shall be sized in accordance with the appliance or equipment manufacturer's installation instructions, ACCA Manual D or the design of the registered design professional.<\/li>\n<li class=\" normal\">Return air taken from one dwelling unit shall not be discharged into another dwelling unit.<\/li>\n<li class=\" normal\">Taking return air from a crawl space shall not be accomplished through a direct connection to the return side of a forced air furnace. Transfer openings in the crawl space enclosure shall not be prohibited.<\/li>\n<li class=\" normal\">Return air shall not be taken from a closet, bathroom, toilet room, kitchen, garage, boiler room, furnace room<del class=\"diffmod\"> <\/del> <ins class=\"diffmod\">, indoor swimming pool enclosure and associated deck area,&nbsp;<\/ins>or unconditioned attic.<del class=\"diffmod\"> <\/del><\/li>\n<ins class=\"diffmod\"> <\/ins><\/ol>\n<ul class=\"exception\">\n<li><strong>Exceptions:<\/strong><\/li>\n<ins class=\"diffins\"> <\/ins><\/ul>\n<ol class=\"diff-list\">\n<li class=\" normal\">Taking return air from a kitchen is not prohibited where such return air openings serve the kitchen and are located not less than 10 feet (3048 mm) from the cooking appliances.<\/li>\n<li class=\" normal\">Dedicated forced air systems serving only the garage shall not be prohibited from obtaining return air from the garage<\/li>\n<li class=\" normal\"><del class=\"diffmod\">Return air shall not be taken from <\/del> <ins class=\"diffmod\">Dedicated HVAC systems serving&nbsp;<\/ins>indoor swimming pool enclosures and associated deck areas <del class=\"diffmod\">except where<\/del> <ins class=\"diffmod\">shall not be prohibited from obtaining return air from<\/ins> such <del class=\"diffmod\">spaces are dehumidified.<\/del> <ins class=\"diffmod\">swimming pool enclosures and associated deck areas<\/ins><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>"},{"id":23262,"new":"Egress doors from classrooms, offices and other occupied rooms in Group E and Group B educational occupancies shall be allowed to be provided with locking arrangements designed to keep intruders from entering the room when all of the following conditions are met: <br \/><div style=\"padding-left:30px;\">1. The door shall be capable of being unlocked from outside the room with a key or other approved means.<br \/>2. The door shall be openable from within the room in accordance with Section 1010.1.9.<br \/>3. Modifications shall not be made to listed panic hardware, fire door hardware or door closers.<\/div>","old":"<p>Egress doors from classrooms, offices and other occupied rooms in Group E and Group B educational occupancies shall be allowed to be provided with locking arrangements designed to keep intruders from entering the room when all of the following conditions are met: <\/p>\n<div style=\"padding-left:30px;\">1. The door shall be capable of being unlocked from outside the room with a key or other approved means.<br \/>2. The door shall be openable from within the room in accordance with Section 1010.1.9.<br \/>3. Modifications shall not be made to listed panic hardware, fire door hardware or door closers.<\/div>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1010.1.4.4&nbsp;<del class=\"diffmod\">Group E classrooms.<\/del> <ins class=\"diffmod\">Locking arrangements in educational occupancies. <\/ins><\/strong><ins class=\"diffmod\">In Group E and Group B educational occupancies, e<\/ins><ins class=\"diffmod\">gress doors from classrooms, offices and other occupied rooms shall be permitted to be provided with locking arrangments designed to keep intruders from entering the room where a<span style=\"text-decoration: underline;\">ll of the following conditions are met:<\/span><\/ins><span style=\"text-decoration: underline;\">&nbsp;<\/span> <span class=\"diffmod\"><span style=\"text-decoration: line-through;\"><del class=\"diffmod\">In<\/del> Group E occupancies<del class=\"diffdel\">, classroom doors<\/del> shall be <del class=\"diffmod\">lockable<\/del>&nbsp; from <del class=\"diffmod\">within<\/del> the <del class=\"diffmod\">classroom without opening the classroom door.&nbsp; All of the following conditions shall apply:&nbsp;<\/del><\/span><del class=\"diffmod\"> <span style=\"text-decoration: underline;\"><span class=\"diffmod\"><del class=\"diffmod\"><br \/><\/del><\/span><\/span><\/del><\/span><del class=\"diffmod\"><\/del>\n<ol class=\"diffmod diff-list\">\n<li class=\" normal\"><span style=\"text-decoration: line-through;\"><del class=\"diffmod\">The classroom<\/del><ins class=\"diffmod\"><\/ins> door shall be <del class=\"diffmod\">unlockable and<\/del> openable from within the <del class=\"diffmod\">classroom and shall comply<\/del> with Section 1010.1.9.<del class=\"diffmod\"> <\/del><\/span><\/li>\n<li class=\"diffmod normal\"><span style=\"text-decoration: line-through;\"><del class=\"diffmod\">The classroom<\/del> door <del class=\"diffmod\">shall be unlockable and openable from outside the classroom by the use of a key<\/del> or <del class=\"diffmod\">other credential.<\/del><\/span><\/li>\n<\/ol>\n<ol class=\"diffmod diff-list\">\n<li class=\" normal\"><del class=\"diffmod\"><\/del><ins class=\"diffmod\"><\/ins><span style=\"text-decoration: underline;\"><ins class=\"diffmod\">The<\/ins> door shall be <ins class=\"diffmod\">capable of being unlocked from outside the room with a key or other approved means.<\/ins><\/span><\/li>\n<li class=\" normal\"><span style=\"text-decoration: underline;\"><ins class=\"diffmod\">The door shall be<\/ins> openable from within the <ins class=\"diffmod\">room in accordance<\/ins> with Section 1010.1.9.<del class=\"diffmod\"> <\/del><\/span><\/li>\n<li class=\"diffmod normal\"><span style=\"text-decoration: underline;\"><ins class=\"diffmod\">Modifications shall not be made to listed panic hardware, fire<\/ins> door <ins class=\"diffmod\">hardware<\/ins> or do<ins class=\"diffmod\">or closers.<\/ins><\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>"},{"id":23288,"new":"<p>For PEX tubing complying with ASTM F876, the first digit folllowing \"PEX\" as marked on the tubing exterior shall be an indicator of the maximum service temperatures for which the PEX tubing can be used. The maximum service temperatures shall be as follows:<br \/><br \/>1. Digit \u201c0\u201d: 73\u2070F (23\u2070C). <br \/><br \/>2. Digit \u201c1\u201d: For not more that 25% of the time, greater than 73\u2070F (23\u2070C) and not exceeding140\u2070F (60\u2070C). For the remainder of the time, not greater than 73\u2070F (23\u2070C). <br \/><br \/>3. Digit \u201c3\u201d: For not more that 50% of the time, greater than 73\u2070F (23\u2070C) and not exceeding 140\u2070F (60\u2070C). For the remainder of the time, not greater than 73\u2070F (23\u2070C). <br \/><br \/>4. Digit \u201c5\u201d: 140\u2070F (60\u2070C). <br \/><br \/><br \/><\/p>","old":"<p>The manufacturer of PEX tubing shall have marked the outside of the tubing with the thermoplastic material designation code in accordance with ASTM F876. The designation code shall consist of the abbreviation \"PEX\" followed by four digits. The first digit shall represent a chlorine resistance rating as established by testing in accordance with ASTM F876.<\/p>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>605.17.3&nbsp;PEX <del class=\"diffmod\">tubing.<\/del> <ins class=\"diffmod\">temperature limitations<\/ins><\/strong>&nbsp;<del class=\"diffmod\">The manufacturer of<\/del> <span style=\"text-decoration: line-through;\">PEX<\/span>&nbsp;<span style=\"text-decoration: line-through;\">tubing<\/span> <del class=\"diffmod\">shall have marked the outside of the tubing with the thermoplastic material designation code in accordance<\/del>&nbsp; &nbsp;<ins class=\"diffmod\">For<\/ins><span style=\"text-decoration: underline;\"> PEX tubing&nbsp;<\/span><ins class=\"diffmod\"><span style=\"text-decoration: underline;\">co<\/span>mplying<\/ins> with ASTM F876<del class=\"diffmod\">. The designation code<\/del> <ins class=\"diffmod\">, the first digit folllowing \"PEX\" as marked on the tubing exterior<\/ins> shall <del class=\"diffmod\">consist<\/del> <ins class=\"diffmod\">be an indicator<\/ins> of the <del class=\"diffmod\">abbreviation \"PEX\" followed by four digits<\/del> <ins class=\"diffmod\">maximum service temperatures for which the PEX tubing can be used<\/ins>. The <del class=\"diffmod\">first digit<\/del> <ins class=\"diffmod\">maximum service temperatures<\/ins> shall <ins class=\"diffmod\">be<\/ins>&nbsp;<del class=\"diffmod\">represent a chlorine resistance rating<\/del> <span style=\"text-decoration: line-through;\">as <\/span><del class=\"diffmod\">established by testing in accordance with ASTM F876.<\/del>&nbsp;<span style=\"text-decoration: underline;\">as&nbsp;<\/span><ins class=\"diffmod\"><span style=\"text-decoration: underline;\">f<\/span>ollows:<\/ins><br class=\"diffmod\" \/>\n<ol>\n<li><span style=\"text-decoration: underline;\"><span style=\"font-size: 10pt;\">Digit \"0\": 73&deg;F (23&deg;C).&nbsp;<\/span><\/span><\/li>\n<li><span style=\"text-decoration: underline;\">Digit \"1\": For not more than 25% of the time, greater than &nbsp;73&deg;F (23&deg;C) and not exceeding140&deg;F (60&deg;C).&nbsp;For the remainder of the time, not greater than 73&deg;F (23&deg;C).&nbsp;<\/span><\/li>\n<li><span style=\"text-decoration: underline;\">Digit \"3\": &nbsp;For not more than 50% of the time,&nbsp;greater than 73&deg;F (23&deg;C) and not exceeding 140&deg;F (60&deg;C).&nbsp;For the remainder of the time, not greater than 73&deg;F (23&deg;C).&nbsp;<\/span><\/li>\n<li><span style=\"text-decoration: underline;\">Digit \"5\": 140&deg;F (60&deg;C).&nbsp;<\/span><\/li>\n<\/ol>\n<br \/><br \/><\/div>\n<\/div>\n<\/div>"},{"id":23344,"new":"<em>Where existing buildings <\/em>undergo a change of group or occupancy any alterations shall comply with Sections 410.6, 410.7 and 410.8 as applicable.","old":"<i>Existing buildings <\/i>that undergo a change of group or occupancy shall comply with this section.<ul class=\"exception\"><li><b>Exception: <\/b>Type B dwelling or sleeping units required by Section 1107 of the <i>International Building Code <\/i>are not required to be provided in <i>existing buildings <\/i>and facilities undergoing a <i>change of occupancy <\/i>in conjunction with <i>alterations <\/i>where the <i>work area <\/i>is 50 percent or less of the aggregate area of the building.<\/li><\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>410.4&nbsp;Change of occupancy.<\/strong>&nbsp;<em><del class=\"diffmod\">Existing<\/del> <ins class=\"diffmod\">Where existing<\/ins> buildings <\/em><del class=\"diffdel\">that <\/del>undergo a change of group or occupancy <ins class=\"diffins\">any alterations <\/ins>shall comply with <span style=\"text-decoration: underline;\">Sections 410.6, 410.7 and 410.8 as applicable.<\/span> <del class=\"diffmod\">this section. <br \/><\/del>\n<ul class=\"diffmod exception\">\n<li><strong><del class=\"diffmod\">Exception: <\/del><\/strong><del class=\"diffmod\">Type B dwelling or sleeping units required by Section 1107 of the <\/del><em class=\"diffmod\"><del class=\"diffmod\">International Building Code <\/del><\/em><del class=\"diffmod\">are not required to be provided in <\/del><em class=\"diffmod\"><del class=\"diffmod\">existing buildings <\/del><\/em><ins class=\"diffmod\"><\/ins><span style=\"text-decoration: line-through;\">and<\/span> <del class=\"diffmod\">facilities undergoing a <\/del><em class=\"diffmod\"><del class=\"diffmod\">change of occupancy <\/del><\/em><del class=\"diffmod\">in conjunction with <\/del><em class=\"diffmod\"><del class=\"diffmod\">alterations <\/del><\/em><del class=\"diffmod\">where the <\/del><em class=\"diffmod\"><del class=\"diffmod\">work area <\/del><\/em><del class=\"diffmod\">is 50 percent or less of the aggregate area of the building.<\/del><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>"},{"id":23347,"new":"<em>Where existing buildings <\/em>undergo a change of group or occupancy classification any alterations shall comply with Sections705, 806 and 906, as applicable.\n<ul class=\"exception\"><li><\/li>\n<\/ul>","old":"<i>Existing buildings <\/i>that undergo a change of group or occupancy classification shall comply with this section.<ul class=\"exception\"><li><b>Exception: <\/b>Type B dwelling or sleeping units required by Section 1107 of the <i>International Building Code <\/i>are not required to be provided in existing buildings and facilities undergoing a <i>change of occupancy <\/i>in conjunction with less than a Level 3 <i>alteration<\/i>.<\/li><\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1012.8&nbsp;Accessibility.<\/strong>&nbsp;<em><del class=\"diffmod\">Existing<\/del> <ins class=\"diffmod\">Where existing<\/ins> buildings <\/em><del class=\"diffdel\">that <\/del>undergo a change of group or occupancy classification <ins class=\"diffins\">any alterations <\/ins>shall comply with&nbsp;<span style=\"text-decoration: underline;\">Sections705, 806 and&nbsp;906, as applicable.<\/span> <del class=\"diffmod\">this section.<\/del>\n<ul class=\"diffmod exception\">\n<li><strong><del class=\"diffmod\">Exception: <\/del><\/strong><del class=\"diffmod\">Type B dwelling or sleeping units required by Section 1107 of the <\/del><em class=\"diffmod\"><del class=\"diffmod\">International Building Code <\/del><\/em><del class=\"diffmod\">are not required to be provided in existing buildings<\/del><span style=\"text-decoration: line-through;\"> and<\/span> <del class=\"diffmod\">facilities undergoing a <\/del><em class=\"diffmod\"><del class=\"diffmod\">change of occupancy <\/del><\/em><del class=\"diffmod\">in conjunction with less than a Level 3 <\/del><em class=\"diffmod\"><del class=\"diffmod\">alteration<\/del><\/em><del class=\"diffmod\">.<\/del><\/li>\n<\/ul>\n<ins class=\"diffmod\"><\/ins>\n<ul>\n<li><\/li>\n<\/ul>\n<ins class=\"diffmod\"> <\/ins><\/div>\n<\/div>\n<\/div>"},{"id":23482,"new":"<p>Unvented <em>attics<\/em> and unvented enclosed roof framing assemblies created by ceilings applied directly to the underside of the roof framing members\/rafters and the structural roof sheathing at the top of the roof framing members shall be permitted where all the following conditions are met:<\/p>\n<ol><li>The unvented <em>attic<\/em> space is completely within the <em>building thermal envelope<\/em>.<\/li>\n<li>No interior Class I vapor retarders are installed on the ceiling side (<em>attic<\/em> floor) of the unvented <em>attic<\/em> assembly or on the ceiling side of the unvented enclosed roof framing assembly.<\/li>\n<li>Where wood shingles or shakes are used, a minimum <sup>1<\/sup> \/<sub>4<\/sub>-inch (6.4 mm) vented airspace separates the shingles or shakes and the roofing underlayment above the structural sheathing.<\/li>\n<li>In <em>climate zones<\/em> 5, 6, 7 and 8, any air-impermeable insulation shall be a Class II vapor retarder or shall have a Class II vapor retarder coating or covering in direct contact with the underside of the insulation.<\/li>\n<li>Insulation shall be located in accordance with the following:\n<ol><li>Item 5.1.1, 5.1.2, 5.1.3 or 5.1.4 shall be met, depending on the air permeability of the insulation directly under the structural roof sheathing.\n<ol><li>Where only air-impermeable insulation is provided, it shall be applied in direct contact with the underside of the structural roof sheathing.<\/li>\n<li>Where air-permeable insulation is provided inside the building thermal envelope, it shall be installed in accordance with Item 5.1. In addition to the air-permeable insulation installed directly below the structural sheathing, rigid board or sheet insulation shall be installed directly above the structural roof sheathing in accordance with the R values in Table 1203.3(1) for condensation control. In <em>climate zones<\/em> 1, 2 and 3, air permeable insulation shall comply with Table 1203.3 (1) or Table 1203.3 (2).<\/li>\n<li>Where both air-impermeable and air-permeable insulation are provided, the <em>air-impermeable insulation<\/em> shall be applied in direct contact with the underside of the structural roof sheathing in accordance with Item 5.1.1 and shall be in accordance with Table 1203.3(1) or Table 1203.3(2). The <em>air-permeable insulation<\/em> shall be installed directly under the <em>air-impermeable insulation<\/em>.<\/li>\n<li>Alternatively, sufficient rigid board or sheet insulation shall be installed directly above the structural roof sheathing to maintain the monthly average temperature of the underside of the structural roof sheathing above 45\u00b0F (7\u00b0C). For calculation purposes, an interior air temperature of 68\u00b0F (20\u00b0C) is assumed and the exterior air temperature is assumed to be the monthly average outside air temperature of the three coldest months.<\/li>\n<\/ol><\/li>\n<li>Where preformed insulation board is used as the <em>air-permeable insulation<\/em> layer, it shall be sealed at the perimeter of each individual sheet interior surface to form a continuous layer.<\/li>\n<\/ol><\/li>\n<\/ol><div style=\"padding-left:30px;\">6. In <em>climate zones<\/em> 1, 2, and 3, the attic space shall be supplied with air from the occupiable space with a flow rate of not less than 50 CFM for each 1000 square feet of ceiling area.<\/div>\n<ul class=\"exception\"><li><strong>Exceptions:<\/strong>\n<ol><li>Section 1203.3 does not apply to special use structures or enclosures such as swimming pool enclosures, data processing centers, hospitals or art galleries.<\/li>\n<li>Section 1203.3 does not apply to enclosures in <em>climate zones<\/em> 5 through 8 that are humidified beyond 35 percent during the three coldest months.<\/li>\n<\/ol><\/li>\n<li>\n<p> <\/p>\n<\/li>\n<\/ul>","old":"Unvented <i>attics<\/i> and unvented enclosed roof framing assemblies created by ceilings applied directly to the underside of the roof framing members\/rafters and the structural roof sheathing at the top of the roof framing members shall be permitted where all the following conditions are met:<ol><li>The unvented <i>attic<\/i> space is completely within the <i>building thermal envelope<\/i>.<\/li><li>No interior Class I vapor retarders are installed on the ceiling side (<i>attic<\/i> floor) of the unvented <i>attic<\/i> assembly or on the ceiling side of the unvented enclosed roof framing assembly.<\/li><li>Where wood shingles or shakes are used, a minimum <sup>1<\/sup> \/<sub>4<\/sub>-inch (6.4 mm) vented airspace separates the shingles or shakes and the roofing underlayment above the structural sheathing.<\/li><li>In Climate Zones 5, 6, 7 and 8, any air-impermeable insulation shall be a Class II vapor retarder or shall have a Class II vapor retarder coating or covering in direct contact with the underside of the insulation.<\/li><li>Insulation shall be located in accordance with the following:<ol><li>Item 5.1.1, 5.1.2, 5.1.3 or 5.1.4 shall be met, depending on the air permeability of the insulation directly under the structural roof sheathing.<ol><li>Where only air-impermeable insulation is provided, it shall be applied in direct contact with the underside of the structural roof sheathing.<\/li><li>Where air-permeable insulation is provided inside the building thermal envelope, it shall be installed in accordance with Item 5.1. In addition to the air-permeable insulation installed directly below the structural sheathing, rigid board or sheet insulation shall be installed directly above the structural roof sheathing in accordance with the R values in Table 1203.3 for condensation control.<\/li><li>Where both air-impermeable and air-permeable insulation are provided, the <i>air-impermeable insulation<\/i> shall be applied in direct contact with the underside of the structural roof sheathing in accordance with Item 5.1.1 and shall be in accordance with the R values in Table 1203.3 for condensation control. The <i>air-permeable insulation<\/i> shall be installed directly under the <i>air-impermeable insulation<\/i>.<\/li><li>Alternatively, sufficient rigid board or sheet insulation shall be installed directly above the structural roof sheathing to maintain the monthly average temperature of the underside of the structural roof sheathing above 45\u00b0F (7\u00b0C). For calculation purposes, an interior air temperature of 68\u00b0F (20\u00b0C) is assumed and the exterior air temperature is assumed to be the monthly average outside air temperature of the three coldest months.<\/li><\/ol><\/li><li>Where preformed insulation board is used as the <i>air-permeable insulation<\/i> layer, it shall be sealed at the perimeter of each individual sheet interior surface to form a continuous layer.<\/li><\/ol><\/li><\/ol><ul class=\"exception\"><li><b>Exceptions:<\/b><ol><li>Section 1203.3 does not apply to special use structures or enclosures such as swimming pool enclosures, data processing centers, hospitals or art galleries.<\/li><li>Section 1203.3 does not apply to enclosures in Climate Zones 5 through 8 that are humidified beyond 35 percent during the three coldest months.<\/li><\/ol><\/li><\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1203.3&nbsp;Unvented attic and unvented enclosed rafter assemblies.<\/strong>&nbsp; <span class=\"diffmod\">Unvented <em>attics<\/em> and unvented enclosed roof framing assemblies created by ceilings applied directly to the underside of the roof framing members\/rafters and the structural roof sheathing at the top of the roof framing members shall be permitted where all the following conditions are met:<\/span><ins class=\"diffins\"> <\/ins>\n<ol class=\"diff-list\">\n<li class=\" normal\">The unvented <em>attic<\/em> space is completely within the <em>building thermal envelope<\/em>.<\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\" normal\">No interior Class I vapor retarders are installed on the ceiling side (<em>attic<\/em> floor) of the unvented <em>attic<\/em> assembly or on the ceiling side of the unvented enclosed roof framing assembly.<\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\" normal\">Where wood shingles or shakes are used, a minimum <sup>1<\/sup> \/<sub>4<\/sub>-inch (6.4 mm) vented airspace separates the shingles or shakes and the roofing underlayment above the structural sheathing.<\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\" normal\">In <em>climate zones<\/em> 5, 6, 7 and 8, any air-impermeable insulation shall be a Class II vapor retarder or shall have a Class II vapor retarder coating or covering in direct contact with the underside of the insulation.<\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\" normal\">Insulation shall be located in accordance with the following:<ins class=\"diffins\"> <\/ins>\n<ol class=\"diff-list\">\n<li class=\" normal normal\">Item 5.1.1, 5.1.2, 5.1.3 or 5.1.4 shall be met, depending on the air permeability of the insulation directly under the structural roof sheathing.<ins class=\"diffins\"> <\/ins>\n<ol class=\"diff-list\">\n<li class=\" normal normal normal\">Where only air-impermeable insulation is provided, it shall be applied in direct contact with the underside of the structural roof sheathing.<\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\" normal normal normal\">Where air-permeable insulation is <span style=\"text-decoration: line-through;\">provided inside the building thermal envelope, it shall be installed in accordance with Item 5.1. In addition to the air-permeable insulation i<\/span>nstalled directly below the structural sheathing, rigid board or sheet insulation shall be installed directly above the structural roof sheathing in accordance with the R values in Table <del class=\"diffmod\">1203.3<\/del> <ins class=\"diffmod\">1203.3(1)<\/ins> for condensation control.<ins class=\"diffins\">&nbsp; Alternatively, in <\/ins><em class=\"diffmod\"><ins class=\"diffins\">climate zones<\/ins><\/em><ins class=\"diffins\"> 1, 2 and 3, air permeable insulation shall comply with Table 1203.3 (2).<\/ins><\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\" normal normal normal\">Where both air-impermeable and air-permeable insulation are provided, the <em>air-impermeable insulation<\/em> shall be applied in direct contact with the underside of the structural roof sheathing in accordance with Item 5.1.1 and shall be in accordance with <del class=\"diffmod\">the R values in<\/del> <ins class=\"diffmod\">Table 1203.3(1) or<\/ins> Table <del class=\"diffmod\">1203.3 for condensation control<\/del> <ins class=\"diffmod\">1203.3(2)<\/ins>. The <em>air-permeable insulation<\/em> shall be installed directly under the <em>air-impermeable insulation<\/em>.<\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\" normal normal normal\">Alternatively, sufficient rigid board or sheet insulation shall be installed directly above the structural roof sheathing to maintain the monthly average temperature of the underside of the structural roof sheathing above 45&deg;F (7&deg;C). For calculation purposes, an interior air temperature of 68&deg;F (20&deg;C) is assumed and the exterior air temperature is assumed to be the monthly average outside air temperature of the three coldest months.<\/li>\n<ins class=\"diffins\"> <\/ins><\/ol>\n<\/li>\n<ins class=\"diffins\"> <\/ins>\n<li class=\" normal normal\">Where preformed insulation board is used as the <em>air-permeable insulation<\/em> layer, it shall be sealed at the perimeter of each individual sheet interior surface to form a continuous layer.<\/li>\n<ins class=\"diffins\"> <\/ins><\/ol>\n<\/li>\n<ins class=\"diffins\"> <\/ins><\/ol>\n<div class=\"diffmod\" style=\"padding-left: 60px;\"><ins class=\"diffins\">6. In <\/ins><em class=\"diffmod\"><ins class=\"diffins\">climate zones<\/ins><\/em><ins class=\"diffins\"> 1, 2, and 3, the attic space shall be supplied with air from the occupiable space with a flow rate of not less than&nbsp;50 CFM for each 1000 square feet&nbsp;of ceiling area.<\/ins><\/div>\n<ins class=\"diffins\">\n<p style=\"padding-left: 90px;\"><strong>Exceptions:<\/strong><\/p>\n<\/ins>\n<ul class=\"exception\" style=\"padding-left: 30px;\">\n<ul>\n<ol>\n<li><span style=\"font-size: 10pt;\">Section 1203.3 does not apply to special use structures or enclosures such as swimming pool enclosures, data processing centers, hospitals or art galleries.<\/span><\/li>\n<li><span style=\"font-size: 10pt;\">Section 1203.3 does not apply to enclosures in <\/span><em style=\"font-size: 10pt;\">climate zones<\/em><span style=\"font-size: 10pt;\">5 through 8 that are humidified beyond 35 percent during the three coldest months.<\/span><\/li>\n<\/ol>\n<\/ul>\n<li class=\"diffmod\"><ins class=\"diffins\"> <\/ins><\/li>\n<ins class=\"diffins\"> <\/ins><\/ul>\n<\/div>\n<\/div>\n<\/div>"},{"id":23495,"new":"<p>Temporary tents and membrane structures, including those erected for a period of less than 180 days, shall be designed and constructed in accordance with Sections 1606, 1607 and 1609 where any of the following conditions occur:<\/p>\n<ol><li>The occupant load of the tent or membrane structure is greater than 500 and the exit travel distance is greater than 75 feet (22 860 mm).<\/li>\n<li>The tent or membrane structure is greater than one story in height.<\/li>\n<\/ol><br \/>Tents or membrane structures greater than one story in height shall also comply with Section 1613. Construction documents as required by Section 1603 shall be provided for such temporary tents and membrane structures.","old":"Temporary tents and membrane structures exceeding one story in height shall be designed and constructed in accordance with Sections 1606, 1607, 1608 and 1609.","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>3103.5&nbsp;Structural design.<\/strong>&nbsp; Temporary tents and membrane structures, including those erected for a period of less than 180 days, shall be designed and constructed in accordance with <del class=\"diffmod\">Chapter 16<\/del> <ins class=\"diffmod\">Sections 1606, 1607 and 1609<\/ins> where any of the following conditions occur:\n<ol class=\"diff-list\">\n<li><span style=\"font-size: 10pt;\">1. &nbsp; &nbsp; The occupant load of the tent or membrane structure <\/span><del class=\"diffmod\" style=\"font-size: 10pt;\">exceeds 300.<\/del><\/li>\n<ol class=\"diff-list\"><del class=\"diffmod\">\n<p>&nbsp;<\/p>\n<\/del><\/ol>\n<li><del class=\"diffmod\" style=\"font-size: 10pt;\">2. &nbsp; &nbsp; The height of<\/del><ins class=\"diffmod\" style=\"font-size: 10pt;\">is greater than 500 and<\/ins><span style=\"font-size: 10pt;\"> the <\/span><del class=\"diffmod\" style=\"font-size: 10pt;\">tent or membrane structure exceeds 30<\/del><ins class=\"diffmod\" style=\"font-size: 10pt;\">exit travel distance is greater than 75<\/ins><span style=\"font-size: 10pt;\"> feet (<\/span><del class=\"diffmod\" style=\"font-size: 10pt;\">9144<\/del><ins class=\"diffmod\" style=\"font-size: 10pt;\">22 860<\/ins><span style=\"font-size: 10pt;\"> mm).<\/span><\/li>\n<\/ol>\n<ol class=\"diff-list\">\n<li><span style=\"font-size: 10pt;\"><span style=\"text-decoration: line-through;\">3<\/span> <span style=\"text-decoration: underline;\">2<\/span>. &nbsp;The tent or membrane structure <\/span><del class=\"diffmod\" style=\"font-size: 10pt;\">exceeds<\/del><ins class=\"diffmod\" style=\"font-size: 10pt;\">is greater than<\/ins><span style=\"font-size: 10pt;\"> one story<\/span><ins class=\"diffins\" style=\"font-size: 10pt;\"> in height<\/ins><span style=\"font-size: 10pt;\">.<\/span><\/li>\n<\/ol>\n<ol class=\"diff-list\"><del class=\"diffmod\">4. &nbsp; &nbsp; The floor area of the tent<\/del><\/ol>\n<br \/><ins class=\"diffmod\">Tents<\/ins> or membrane <del class=\"diffmod\">structure exceeds 5,000 square feet (465 m<\/del><sup class=\"diffmod\"><del class=\"diffmod\">2<\/del><\/sup><del class=\"diffmod\">).<\/del><del class=\"diffmod\"> <\/del> <ins class=\"diffmod\">structures greater than one story in height shall also comply with Section 1613. <\/ins>Construction documents as required by Section 1603 shall be provided for such temporary tents and membrane structures.<\/div>\n<\/div>\n<\/div>"},{"id":23607,"new":"<div>Where there is an accessible concealed floor, floor-ceiling or attic space, fire walls, fire barriers, fire partitions, smoke barriers, smoke partitions or any other wall required to have protected openings or penetrations shall be effectively and permanently identified with signs or stenciling in the concealed space stating \"FIRE AND\/OR SMOKE BARRIER - PROTECT ALL OPENINGS.\" or other wording. Such identification shall be installed in one of the following configurations:<\/div>\n<div>\n<ol><li><span style=\"font-size:14px;\">Be located within 15 feet (4572 mm) of the end of each wall and at intervals not exceeding 30 feet (9144 mm) measured horizontally along the wall or partition. Lettering shall be<\/span> not less than 3 inches (76mm) in height with a minimum 3\/8 inch (9.5 mm) stroke in a contrasting color.<\/li>\n<li>Be continuous along the entire length of the wall or partition. Lettering shall not be less than 3\/4 inch (19 mm) in height and shall be repeated at intervals not exceeding 24 inches (609 mm) horizontally within a minimum 3 inch (76 mm) band of contrasting color.<\/li>\n<\/ol><\/div>\n<div style=\"padding-left:60px;\"> <\/div>","old":"<div>Fire walls, fire barriers, fire partitions, smoke barriers and smoke partitions or any other wall required to have protected openings or penetrations shall be effectively and permanently identified with signs or stenciling. Such identification shall be located in accessible concealed floor, floor-ceiling or attic spaces; and either:<\/div>\n<div><ol><li><span style=\"font-size:14px;\">Include lettering not less than 3 inches (76 mm) in height with a minimum 3\/8 inch (9.5 mm) stroke in a contrasting color incorporating the suggested wording. \"FIRE AND\/OR SMOKE BARRIER-PROTECT ALL OPENINGS\" or other wording, located within 15 feet (4572 mm) of the end of each wall and at intervals not exceeding 30 feet (9144 mm) measured horizontally along the wall or partition; or<\/span><\/li>\n<li><span style=\"font-size:14px;\">Include a contrasting color band of not less than 3 inches (76mm) in height and lettering not less than 1\/2 inch (12.7 mm) in height incorporating the suggested wording: \u201cFIRE AND\/OR SMOKE BARRIER\u2014PROTECT ALL OPENINGS,\u201d or other wording, repeating at intervals not more than 24 inches (610 mm) measured horizontally and continuously along the entire length of the fire wall, fire barrier, fire partition, smoke barrier or smoke partition.<\/span><\/li>\n<\/ol><\/div>\n<div style=\"padding-left:60px;\"> <strong>Exception:<\/strong> Walls in Group R-2 occupancies that do not have a removable decorative ceiling allowing access to the concealed space.<\/div>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>703.7&nbsp;Marking and identification.<\/strong>&nbsp;\n<div><del class=\"diffmod\">Fire<\/del> <ins class=\"diffmod\">Where there is an accessible concealed floor, floor-ceiling or attic space, fire<\/ins> walls, fire barriers, fire partitions, smoke barriers<del class=\"diffmod\"> and<\/del> <ins class=\"diffmod\">,<\/ins> smoke partitions or any other wall required to have protected openings or penetrations shall be effectively and permanently identified with signs or stenciling<ins class=\"diffins\"> in the concealed space stating \"FIRE AND\/OR SMOKE BARRIER - PROTECT ALL OPENINGS.\" or other wording<\/ins>. Such identification shall be <del class=\"diffmod\">located<\/del> <ins class=\"diffmod\">installed<\/ins> in <del class=\"diffmod\">accessible concealed floor, floor-ceiling or attic spaces; and either<\/del> <ins class=\"diffmod\">one of the following configurations<\/ins>:<\/div>\n<div><ins class=\"diffins\"> <\/ins>\n<ol class=\"diff-list\">\n<li class=\" normal\"><span style=\"font-size: 14px;\"><del class=\"diffmod\">Include lettering not less than 3 inches (76 mm) in height with a minimum 3\/8 inch (9.5 mm) stroke in a contrasting color incorporating the suggested wording. \"FIRE AND\/OR SMOKE BARRIER-PROTECT ALL OPENINGS\" or other wording,<\/del> <ins class=\"diffmod\">Be<\/ins> located within 15 feet (4572 mm) of the end of each wall and at intervals not exceeding 30 feet (9144 mm) measured horizontally along the wall or partition<del class=\"diffmod\">; or<\/del><\/span><\/li>\n<del class=\"diffmod\"> <\/del>\n<li class=\"diffmod removed\"><span style=\"font-size: 14px;\"><del class=\"diffmod\">Include a contrasting color band of <\/del> <ins class=\"diffmod\">. Lettering shall be<\/ins><\/span><ins class=\"diffmod\">&nbsp;<\/ins>not less than 3 inches (76mm) in height <del class=\"diffmod\">and lettering not less than 1\/2 <\/del> <ins class=\"diffmod\">with a minimum&nbsp;3\/8&nbsp;<\/ins>inch (<del class=\"diffmod\">12.7<\/del> <ins class=\"diffmod\">9.5<\/ins> mm)<ins class=\"diffins\">&nbsp;stroke<\/ins> in <del class=\"diffmod\">height incorporating the suggested wording: \"FIRE AND\/OR SMOKE BARRIER&mdash;PROTECT ALL OPENINGS,\" or other wording, repeating at intervals not more than 24 inches (610 mm) measured horizontally and continuously<\/del> <ins class=\"diffmod\">a contrasting color.<\/ins><\/li>\n<ins class=\"diffmod\"> <\/ins>\n<li class=\"diffmod replacement\"><ins class=\"diffmod\">Be continuous<\/ins> along the entire length of the <del class=\"diffdel\">fire <\/del>wall<del class=\"diffdel\">, fire barrier, fire partition, smoke barrier<\/del> or <del class=\"diffdel\">smoke <\/del>partition. <ins class=\"diffmod\"> Lettering shall not be less than 3\/4 inch (19 mm) in height and shall be repeated at intervals not exceeding 24 inches (609 mm) horizontally within a minimum 3 inch (76 mm) band of contrasting color.<\/ins><\/li>\n<\/ol>\n<\/div>\n<div style=\"padding-left: 60px;\">&nbsp;<strong class=\"diffmod\"><del class=\"diffdel\">Exception:<\/del><\/strong><del class=\"diffdel\"> Walls in Group R-2 occupancies that do not have a removable decorative ceiling allowing access to the concealed space.<\/del><\/div>\n<\/div>\n<\/div>\n<\/div>"},{"id":23692,"new":"<p>Walking surfaces tested per the ANSI\/NFSI B101.1 and ANSI\/NFSI B101.3 standards with the following coefficients of friction:<\/p>\n<ol><li>A wet Static Coefficient of Friction (SCOF) of 0.60 or greater,<\/li>\n<li>A wet Dynamic Coefficient of Friction (DCOF) of 0.42 or greater for surfaces with less than a 1:20 incline. <\/li>\n<li>A wet Dynamic Coefficient of Friction (DCOF) of 0.45 or greater for inclines of 1:20 or greater.<\/li>\n<\/ol>","old":"<p>The physical property of a floor or walkway surface that is designed to mitigate slipping during normal human ambulation by providing a reasonably sufficient level of available contact friction.<\/p>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>HIGH TRACTION.<\/strong>&nbsp; <del class=\"diffmod\">The physical property&nbsp;of <del class=\"diffmod\">a flooror <del class=\"diffmod\">walkway surface that is designed to mitigate slipping during normal human ambulation by providing&nbsp;a <del class=\"diffmod\">reasonably sufficient level<\/del>&nbsp;of <del class=\"diffmod\">available contact friction.<\/del><\/del><\/del><\/del> <ins class=\"diffmod\">Walking surfaces tested per the ANSI\/NFSI B101.1 and ANSI\/NFSI B101.3 standards with the following coefficients<\/ins><span style=\"text-decoration: underline;\"> of<\/span> <ins class=\"diffmod\">friction:<\/ins><ins class=\"diffmod\"> <\/ins>\n<ol class=\"diffmod diff-list\">\n<li class=\" normal\"><ins class=\"diffmod\">A wet Static Coefficient of Friction (SCOF) of 0.60<\/ins><span style=\"text-decoration: underline;\"> or<\/span> <ins class=\"diffmod\">greater,<\/ins><\/li>\n<ins class=\"diffmod\"> <\/ins>\n<li class=\"diffmod normal\"><ins class=\"diffmod\">A wet Dynamic Coefficient of Friction (DCOF) of 0.42 or greater for surfaces with less than<\/ins><span style=\"text-decoration: underline;\"> a<\/span> <ins class=\"diffmod\">1:20 incline.&nbsp;<\/ins><\/li>\n<ins class=\"diffmod\"> <\/ins>\n<li class=\"diffmod normal\"><ins class=\"diffmod\">A wet Dynamic Coefficient<\/ins><span style=\"text-decoration: underline;\"> of&nbsp;<\/span><ins class=\"diffmod\">Friction (DCOF) of 0.45 or greater for&nbsp; inclines of 1:20 or greater.<\/ins><\/li>\n<ins class=\"diffmod\"> <\/ins><\/ol>\n<\/div>\n<\/div>\n<\/div>"},{"id":23804,"new":"<p>The whole-house mechanical ventilation system shall provide outdoor air at a continuous rate of not less than that determined in accordance with Equation 15-1 or Table M1507.3.3.<\/p>\n<ul class=\"exception\"><li><strong>Exception:<\/strong> The whole-house mechanical ventilation system is permitted to operate intermittently where the system complies with Section M1507.3.5.<\/li>\n<\/ul><br \/><p>Q<sub>r<\/sub> = (0.01 x A<sub>floor<\/sub>) + [7.5 x (N<sub>br<\/sub> + 1)] (Equation 15-1)<\/p>\n<p>where:<\/p>\n<p>Q<sub>r<\/sub> = continuous ventilation flow rate, cubic feet per minute (cfm)<\/p>\n<p>A<sub>floor<\/sub> = floor area in square feet (ft<sup>2<\/sup>)<\/p>\n<p>N<sub>br<\/sub> = number of bedrooms, not less than one<\/p>","old":"The whole-house mechanical ventilation system shall provide outdoor air at a continuous rate of not less than that determined in accordance with Table M1507.3.3(1).<ul class=\"exception\"><li><b>Exception:<\/b> The whole-house mechanical ventilation system is permitted to operate intermittently where the system has controls that enable operation for not less than 25-percent of each 4-hour segment and the ventilation rate prescribed in Table M1507.3.3(1) is multiplied by the factor determined in accordance with Table M1507.3.3(2).<\/li><\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>M1507.3.3&nbsp;Mechanical ventilation rate.<\/strong>&nbsp;<span class=\"diffmod\">The whole-house mechanical ventilation system shall provide outdoor air at a continuous rate of not less than that determined in accordance with <ins class=\"diffins\">Equation 15-1 or <\/ins>Table <del class=\"diffmod\">M1507.3.3(1)<\/del> <ins class=\"diffmod\">M1507.3.3<\/ins>.<\/span><ins class=\"diffins\"> <\/ins>\n<ul class=\"exception\">\n<li><strong>Exception:<\/strong> The whole-house mechanical ventilation system is permitted to operate intermittently where the system <span style=\"text-decoration: underline;\">complies with Section M1507.3.5<\/span> <span style=\"text-decoration: line-through;\">has controls that enable operation for&nbsp;25-percent of each 4-hour segment and the ventilation rate prescribed in Table M1507.3.3(1) is multiplied by the factor determined in accordance with Table M1507.3.3(2).one<\/span>.<\/li>\n<ins class=\"diffmod\"> <\/ins><\/ul>\n<br \/>\n<p><ins class=\"diffmod\">Q<\/ins><sub class=\"diffmod\"><ins class=\"diffmod\">r<\/ins><\/sub><ins class=\"diffmod\"> = (0.01 x A<\/ins><sub class=\"diffmod\"><ins class=\"diffmod\">floor<\/ins><\/sub><ins class=\"diffmod\">) + [7.5 x (N<\/ins><sub class=\"diffmod\"><ins class=\"diffmod\">br<\/ins><\/sub><ins class=\"diffmod\"> + 1)]&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (Equation 15-1)<\/ins><\/p>\n<ins class=\"diffmod\"> <\/ins>\n<p class=\"diffmod\"><ins class=\"diffmod\">where:<\/ins><\/p>\n<ins class=\"diffmod\"> <\/ins>\n<p class=\"diffmod\"><ins class=\"diffmod\">Q<\/ins><sub class=\"diffmod\"><ins class=\"diffmod\">r<\/ins><\/sub><ins class=\"diffmod\"> = continuous ventilation flow rate, cubic feet per minute (cfm)<\/ins><\/p>\n<ins class=\"diffmod\"> <\/ins>\n<p class=\"diffmod\"><ins class=\"diffmod\">A<\/ins><sub class=\"diffmod\"><ins class=\"diffmod\">floor<\/ins><\/sub><ins class=\"diffmod\"> = floor area in square feet (ft<\/ins><sup class=\"diffmod\"><ins class=\"diffmod\">2<\/ins><\/sup><ins class=\"diffmod\">)<\/ins><\/p>\n<ins class=\"diffmod\"> <\/ins>\n<p class=\"diffmod\"><ins class=\"diffmod\">N<\/ins><sub class=\"diffmod\"><ins class=\"diffmod\">br<\/ins><\/sub><ins class=\"diffmod\"> = number of bedrooms,<\/ins> not less than&nbsp;<\/p>\n<\/div>\n<\/div>\n<\/div>"},{"id":25330,"new":"<p>An automatic residential fire sprinkler system shall be installed in <em>townhouses<\/em>.<\/p>\n<p style=\"padding-left:30px;\"><strong>Exceptions:<\/strong><\/p>\n<ul class=\"exception\"><li>1. An automatic residential fire sprinkler system shall not be required where <em>additions<\/em> or <em>alterations<\/em> are made to existing <em>townhouses<\/em> that do not have an automatic residential fire sprinkler system installed.<\/li>\n<li>2. Townhouses meeting the requirements of the International Building Code for Type II-A or Type V-A construction.<\/li>\n<\/ul>","old":"An automatic residential fire sprinkler system shall be installed in <i>townhouses<\/i>.<ul class=\"exception\"><li><b>Exception:<\/b> An automatic residential fire sprinkler system shall not be required where <i>additions<\/i> or <i>alterations<\/i> are made to existing <i>townhouses<\/i> that do not have an automatic residential fire sprinkler system installed.<\/li><\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>R313.1&nbsp;Townhouse automatic fire sprinkler systems.<\/strong>&nbsp;<span class=\"diffmod\"><span class=\"diffmod\">An automatic residential fire sprinkler system shall be installed in <em>townhouses<\/em>.<\/span><\/span>\n<p style=\"padding-left: 30px;\"><strong> <br \/><span style=\"text-decoration: line-through;\">Exception <\/span><span style=\"text-decoration: underline;\">Exceptions<\/span>:<\/strong><\/p>\n<ol>\n<li>An automatic residential fire sprinkler system shall not be required where <em>additions<\/em> or <em>alterations<\/em> are made to existing <em>townhouses<\/em> that do not have an automatic residential fire sprinkler system installed.<del class=\"diffmod\"><\/del><\/li>\n<li><ins class=\"diffmod\">Townhouses meeting the requirements of the International Building Code for Type II-A or Type V-A construction.<\/ins><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>"},{"id":25332,"new":"<p>An automatic residential fire sprinkler system shall be installed in one- and two-family <em>dwellings<\/em>.<\/p>\n<ul class=\"exception\"><li><strong>Exceptions:<\/strong><\/li>\n<li>1. An automatic residential fire sprinkler system shall not be required for <em>additions<\/em> or <em>alterations<\/em> to existing buildings that are not already provided with an automatic residential sprinkler system.<\/li>\n<li>2. One- and two-family dwellings meeting the requirements of the International Building Code for Type II-A or Type V-A construction.<\/li>\n<\/ul>","old":"An automatic residential fire sprinkler system shall be installed in one- and two-family <i>dwellings<\/i>.<ul class=\"exception\"><li><b>Exception:<\/b> An automatic residential fire sprinkler system shall not be required for <i>additions<\/i> or <i>alterations<\/i> to existing buildings that are not already provided with an automatic residential sprinkler system.<\/li><\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>R313.2&nbsp;One- and two-family dwellings automatic fire systems.<\/strong>&nbsp;<span class=\"diffmod\"><span class=\"diffmod\"><span class=\"diffmod\">An automatic residential fire sprinkler system shall be installed in one- and two-family <em>dwellings<\/em>.<\/span><\/span><\/span>\n<p style=\"padding-left: 30px;\"><strong><br \/><span style=\"text-decoration: underline;\">Exceptions<\/span>&nbsp; <\/strong><strong class=\"diffmod\"><del class=\"diffmod\">Exception:<\/del><\/strong><\/p>\n<ol>\n<li>An automatic residential fire sprinkler system shall not be required for <em>additions<\/em> or <em>alterations<\/em> to existing buildings that are not already provided with an automatic residential sprinkler system.<del class=\"diffmod\"><\/del><\/li>\n<li><ins class=\"diffmod\">One- and two-family dwellings meeting the requirements of the International Building Code for Type II-A or Type V-A construction.<\/ins><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>"},{"id":29039,"new":"Structural observations shall be provided for those structures assigned to <i>Seismic Design Category<\/i> D, E or F where one or more of the following conditions exist:<ol><li>The structure is classified as <i>Risk Category<\/i> III or IV.<\/li><li>The height of the structure is greater than 75 feet (22 860 mm) above the base as defined in ASCE 7.<\/li><li>The structure is assigned to <i>Seismic Design Category<\/i> E, is classified as <i>Risk Category<\/i> I or II, and is greater than two <i>stories above<\/i> <i>grade plane<\/i>.<\/li><li>When so designated by the <i>registered design professional<\/i> responsible for the structural design.<\/li><li>When such observation is specifically required by the <i>building official<\/i>.<\/li><\/ol>","old":"Structural observations shall be provided for those structures assigned to <i>Seismic Design Category<\/i> D, E or F where one or more of the following conditions exist:<ol><li>The structure is classified as <i>Risk Category<\/i> III or IV.<\/li><li>The height of the structure is greater than 75 feet (22 860 mm) above the base as defined in ASCE 7.<\/li><li>The structure is assigned to <i>Seismic Design Category<\/i> E, is classified as <i>Risk Category<\/i> I or II, and is greater than two <i>stories above<\/i> <i>grade plane<\/i>.<\/li><li>When so designated by the <i>registered design professional<\/i> responsible for the structural design.<\/li><li>When such observation is specifically required by the <i>building official<\/i>.<\/li><\/ol>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1704.6.1&nbsp;Structural observations for seismic resistance.<\/strong>&nbsp; Structural observations shall be provided for those structures assigned to <em>Seismic Design Category<\/em> D, E or F where one or more of the following conditions exist:\n<ol class=\"diff-list\">\n<li class=\"normal\">The structure is classified as <em>Risk Category<\/em> III or IV.<\/li>\n<li class=\"normal\">The height of the structure is greater than 75 feet (22 860 mm) above the base as defined in ASCE 7.<\/li>\n<li class=\"normal\">The structure is assigned to <em>Seismic Design Category<\/em> E, is classified as <em>Risk Category<\/em> I or II, and is greater than two <em>stories above<\/em> <em>grade plane<\/em>.<\/li>\n<li class=\"normal\">When so designated by the <em>registered design professional<\/em> responsible for the structural design.<\/li>\n<li class=\"normal\"><span style=\"text-decoration: line-through;\">When such observation is specifically required by the <em>building official<\/em>.<\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>"},{"id":29040,"new":"Structural observations shall be provided for those structures sited where <i>V<sub>asd<\/sub><\/i> as determined in accordance with Section 1609.3.1 exceeds 110 mph (49 m\/sec), where one or more of the following conditions exist:<ol><li>The structure is classified as <i>Risk Category<\/i> III or IV.<\/li><li>The <i>building height<\/i> is greater than 75 feet (22 860 mm).<\/li><li>When so designated by the <i>registered design professional<\/i> responsible for the structural design.<\/li><li>When such observation is specifically required by the <i>building official<\/i>.<\/li><\/ol>","old":"Structural observations shall be provided for those structures sited where <i>V<sub>asd<\/sub><\/i> as determined in accordance with Section 1609.3.1 exceeds 110 mph (49 m\/sec), where one or more of the following conditions exist:<ol><li>The structure is classified as <i>Risk Category<\/i> III or IV.<\/li><li>The <i>building height<\/i> is greater than 75 feet (22 860 mm).<\/li><li>When so designated by the <i>registered design professional<\/i> responsible for the structural design.<\/li><li>When such observation is specifically required by the <i>building official<\/i>.<\/li><\/ol>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>1704.6.2&nbsp;Structural observations for wind requirements.<\/strong>&nbsp; Structural observations shall be provided for those structures sited where <em>V<sub>asd<\/sub><\/em> as determined in accordance with Section 1609.3.1 exceeds 110 mph (49 m\/sec), where one or more of the following conditions exist:\n<ol class=\"diff-list\">\n<li class=\"normal\">The structure is classified as <em>Risk Category<\/em> III or IV.<\/li>\n<li class=\"normal\">The <em>building height<\/em> is greater than 75 feet (22 860 mm).<\/li>\n<li class=\"normal\">When so designated by the <em>registered design professional<\/em> responsible for the structural design.<\/li>\n<li class=\"normal\"><span style=\"text-decoration: line-through;\">When such observation is specifically required by the <em>building official<\/em>.<\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<\/div>"},{"id":29286,"new":"<p>All floor assemblies shall be provided with a <sup>1<\/sup> \/<sub>2<\/sub>-inch (12.7 mm) gypsum wallboard membrane, <sup>5<\/sup> \/<sub>8<\/sub>-inch (16 mm) wood structural panel membrane on the underside of the floor framing member. Penetrations or openings for ducts, vents, electrical outlets, lighting, devices, luminaires, wires, speakers, drainage, piping and similar openings or penetrations shall be permitted. Walls, columns, or other members supporting assemblies required to be protected by this section shall be provided protection equivalent to that provided for the floor.<\/p>\n<ul class=\"exception\"><li><strong>Exceptions:<\/strong>\n<ol><li>Floor assemblies located directly over a space protected by an automatic sprinkler system in accordance with Section R313..<\/li>\n<li>Floor assemblies required to be protected by R302.3, R302.6, or R302.7..<\/li>\n<li>Portions of floor assemblies shall be permitted to be unprotected where complying with the following:\n<ol><li>A maximum of 150 square feet of floor assembly per story may be unprotected. The unprotected assembly must be separated from the protected assembly by a layer of <sup>1<\/sup>\/<sub>2<\/sub>- inch gypsum board, <sup>5<\/sup>\/<sub>8<\/sub>-inch structural panel sheathing, or solid sawn lumber blocking applied around the perimeter of the unprotected area.<\/li>\n<li>Floor assemblies or landlings where the underfloor space is enclosed on all sides and there is not provided a means to access such underfloor space.<\/li>\n<li>Floor assemblies where the underfloor space is exposed to the exterior or is not within surrounding foundation walls o fhte dwelling such as decks, porches, or dwellings constructed on piers.<\/li>\n<li>Floor assemblies of additions to existing dwellings.<\/li>\n<li>Floor assemblies in detached accessory structures.<\/li>\n<\/ol><\/li>\n<li>Wood floor assemblies using dimension lumber or structural composite lumber equal to or greater than 2-inch by 10-inch (50.8 mm by 254 mm) nominal dimension, or other approved floor assemblies demonstrating equivalent fire performance.<\/li>\n<\/ol><\/li>\n<\/ul>","old":"Floor assemblies that are not required elsewhere in this code to be fire-resistance rated, shall be provided with a <sup>1<\/sup> \/<sub>2<\/sub>-inch (12.7 mm) gypsum wallboard membrane, <sup>5<\/sup> \/<sub>8<\/sub>-inch (16 mm) wood structural panel membrane, or equivalent on the underside of the floor framing member. Penetrations or openings for ducts, vents, electrical outlets, lighting, devices, luminaires, wires, speakers, drainage, piping and similar openings or penetrations shall be permitted.<ul class=\"exception\"><li><b>Exceptions:<\/b><ol><li>Floor assemblies located directly over a space protected by an automatic sprinkler system in accordance with Section P2904, NFPA 13D, or other approved equivalent sprinkler system.<\/li><li>Floor assemblies located directly over a crawl space not intended for storage or fuel-fired appliances.<\/li><li>Portions of floor assemblies shall be permitted to be unprotected where complying with the following:<ol><li>The aggregate area of the unprotected portions does not exceed 80 square feet (7.4 m<sup>2<\/sup>) per story<\/li><li>Fireblocking in accordance with Section R302.11.1 is installed along the perimeter of the unprotected portion to separate the unprotected portion from the remainder of the floor assembly.<\/li><\/ol><\/li><li>Wood floor assemblies using dimension lumber or structural composite lumber equal to or greater than 2-inch by 10-inch (50.8 mm by 254 mm) nominal dimension, or other approved floor assemblies demonstrating equivalent fire performance.<\/li><\/ol><\/li><\/ul>","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>R302.13&nbsp;Fire protection of floors.<\/strong>&nbsp;<del class=\"diffmod\">Floor<\/del>\n<p class=\"diffmod\"><ins class=\"diffmod\">All floor<\/ins> assemblies<del class=\"diffdel\"> that are not required elsewhere in this code to be fire-resistance rated,<\/del> shall be provided with a <sup>1<\/sup> \/<sub>2<\/sub>-inch (12.7 mm) gypsum wallboard membrane, <sup>5<\/sup> \/<sub>8<\/sub>-inch (16 mm) wood structural panel membrane<del class=\"diffdel\">, or equivalent<\/del> on the underside of the floor framing member. Penetrations or openings for ducts, vents, electrical outlets, lighting, devices, luminaires, wires, speakers, drainage, piping and similar openings or penetrations shall be permitted.<ins class=\"diffins\"> Walls, columns, or other members supporting assemblies required to be protected by this section shall be provided protection equivalent to that provided for the floor.<\/ins><\/p>\n<ins class=\"diffins\"> <\/ins>\n<ul>\n<li><strong>Exceptions:<\/strong><ins class=\"diffins\"> <\/ins>\n<ol class=\"diff-list\">\n<li class=\"normal\">Floor assemblies located directly over a space protected by an automatic sprinkler system in accordance with Section<del class=\"diffmod\"> P2904, NFPA 13D, or other approved equivalent sprinkler system<\/del><ins class=\"diffmod\">&nbsp;R313<\/ins>.<ins class=\"diffins\">.<\/ins><\/li>\n<li class=\"removed\"><del class=\"diffmod\">Floor assemblies located directly over a crawl space not intended for storage or fuel-fired appliances.<\/del><ins class=\"diffmod\"><\/ins><\/li>\n<li class=\"replacement\"><del class=\"diffmod\"><\/del><ins class=\"diffmod\">Floor assemblies required to be protected by R302.3, R302.6, or R302.7..<\/ins><\/li>\n<li class=\"normal\">Portions of floor assemblies shall be permitted to be unprotected where complying with the following:<ins class=\"diffins\"> <\/ins>\n<ol class=\"diff-list\">\n<li class=\"normal normal\"><del class=\"diffmod\"><\/del><ins class=\"diffmod\">A maximum of 150 square feet of floor assembly per story may be unprotected. The unprotected assembly must be separated from the protected assembly by a layer of <\/ins><sup class=\"diffmod\"><ins class=\"diffmod\">1<\/ins><\/sup><ins class=\"diffmod\">\/<\/ins><sub class=\"diffmod\"><ins class=\"diffmod\">2<\/ins><\/sub><ins class=\"diffmod\">- inch gypsum board, <\/ins><sup class=\"diffmod\"><ins class=\"diffmod\">5<\/ins><\/sup><ins class=\"diffmod\">\/<\/ins><sub class=\"diffmod\"><ins class=\"diffmod\">8<\/ins><\/sub><ins class=\"diffmod\">-inch structural panel sheathing, or solid sawn lumber blocking applied around the perimeter of the unprotected area.<\/ins><\/li>\n<li class=\"removed removed\"><del class=\"diffmod\">Fireblocking in accordance with Section R302.11.1 is installed along the perimeter of the unprotected portion to separate the unprotected portion from the remainder of the floor assembly.<\/del><ins class=\"diffmod\"><\/ins><\/li>\n<li class=\"replacement replacement\"><del class=\"diffmod\"><\/del><ins class=\"diffmod\">Floor assemblies or landlings where the underfloor space is enclosed on all sides and there is not provided a means to access such underfloor space.<\/ins><\/li>\n<li class=\"normal normal\"><del class=\"diffmod\"><\/del><ins class=\"diffmod\">Floor assemblies where the underfloor space is exposed to the exterior or is not within surrounding foundation walls o fhte dwelling such as decks, porches, or dwellings constructed on piers.<\/ins><\/li>\n<li class=\"normal normal\"><del class=\"diffmod\"><\/del><ins class=\"diffmod\">Floor assemblies of additions to existing dwellings.<\/ins><\/li>\n<li class=\"normal normal\"><del class=\"diffmod\"><\/del><ins class=\"diffmod\">Floor assemblies in detached accessory structures.<\/ins><\/li>\n<\/ol>\n<\/li>\n<li class=\"removed removed\"><span style=\"text-decoration: line-through;\">Wood floor assemblies using dimension lumber or structural composite lumber equal to or greater than 2-inch by 10-inch (50.8 mm by 254 mm) nominal dimension, or other approved floor assemblies demonstrating equivalent fire performance.<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>"},{"id":30150,"new":"Alternating tread devices shall not be used as an element of a means of egress. Alternating tread devices shall be permitted provided that the required means of egress stairway or ramp serves the same space at each adjoining level or where a means of egress is not required. The clear width at and below the handrails shall be not less than 20 inches (508 mm).","old":"Alternating tread devices shall not be used as an element of a means of egress. Alternating tread devices shall be permitted provided that the required means of egress stairway or ramp serves the same space at each adjoining level or where a means of egress is not required. The clear width at and below the handrails shall be not less than 20 inches (508 mm).","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>R311.7.11&nbsp;Alternating tread devices.<\/strong>&nbsp;Alternating tread devices shall not be used as an element of a means of egress. Alternating tread devices shall be permitted<span style=\"text-decoration: underline;\">:<\/span> <span style=\"text-decoration: line-through;\">provided that the required means of egress<\/span>\n<ol>\n<li><span style=\"text-decoration: underline;\">Where a<\/span>&nbsp;stairway <span style=\"text-decoration: underline;\">complying with Sections R311.7<\/span>&nbsp;or <span style=\"text-decoration: underline;\">a<\/span>&nbsp;ramp <span style=\"text-decoration: underline;\">complying with R311.8<\/span>&nbsp;serves the same space <span style=\"text-decoration: line-through;\">at each adjoining level or where<\/span>&nbsp;<span style=\"text-decoration: underline;\">as<\/span> a means of egress <span style=\"text-decoration: line-through;\">is not required<\/span>.<\/li>\n<li><span style=\"text-decoration: underline;\">To serve crawl spaces, storage sheds, attics, play houses, and similar uses and structures.<\/span><\/li>\n<\/ol>\nThe clear width at and below the handrails shall be not less than 20 inches (508 mm).<\/div>\n<\/div>\n<\/div>"},{"id":30151,"new":"Ships ladders shall not be used as an element of a means of egress. Ships ladders shall be permitted provided that a required means of egress stairway or ramp serves the same space at each adjoining level or where a means of egress is not required. The clear width at and below the handrails shall be not less than 20 inches.","old":"Ships ladders shall not be used as an element of a means of egress. Ships ladders shall be permitted provided that a required means of egress stairway or ramp serves the same space at each adjoining level or where a means of egress is not required. The clear width at and below the handrails shall be not less than 20 inches.","override":"<div class=\"codes-container\">\n<div class=\"code-section\">\n<div class=\"monograph-section-content-container\"><strong>R311.7.12&nbsp;Ships ladders.<\/strong>&nbsp;Ships ladders shall not be used as an element of a means of egress. Ships ladders shall be permitted<span style=\"text-decoration: underline;\">:<\/span> <span style=\"text-decoration: line-through;\">provided that<\/span>\n<ol>\n<li><span style=\"text-decoration: underline;\">Where<\/span>&nbsp;a <span style=\"text-decoration: line-through;\">required means of egress<\/span> stairway <span style=\"text-decoration: underline;\">complying with Section R311.7<\/span>&nbsp;or <span style=\"text-decoration: underline;\">a<\/span>&nbsp;ramp <span style=\"text-decoration: underline;\">complying with Section R311.8<\/span>&nbsp;serves the same space <span style=\"text-decoration: line-through;\">at each adjoining level or where<\/span>&nbsp;<span style=\"text-decoration: underline;\">as<\/span> a means of egress <span style=\"text-decoration: line-through;\">is not required<\/span>.<\/li>\n<li><span style=\"text-decoration: underline;\">To serve crawl spaces, storasge sheds, attics, play houses, and similar uses and stuctures.<\/span><\/li>\n<\/ol>\nThe clear width at and below the handrails shall be not less than 20 inches.<br \/><br \/><\/div>\n<\/div>\n<\/div>"}]