Page 51 - ICC IEBC 2018

ALTERATIONS—LEVEL 1

above the finished grade or other surface below, on the SECTION 704
exterior of the room, space or building, and that are MEANS OF EGRESS
provided with window fall prevention devices that 704.1 General. Alterations shall be done in a manner that
comply with ASTM F2006.
maintains the level of protection provided for the means of
2. Operable windows with openings that are provided egress.
with window fall prevention devices that comply
with ASTM F2090.
702.5 Replacement window emergency escape and rescue SECTION 705
openings. Where windows are required to provide emer- REROOFING
gency escape and rescue openings in Group R-2 and R-3 [BS] 705.1 General. Materials and methods of application
occupancies and one- and two-family dwellings and town- used for recovering or replacing an existing roof covering
houses regulated by the International Residential Code, shall comply with the requirements of Chapter 15 of the
replacement windows shall be exempt from the requirements International Building Code.
of Sections 1030.2, 1030.3 and 1030.4 of the International
Building Code and Sections R310.2.1, R310.2.2 and Exceptions:
R310.2.3 of the International Residential Code, provided that 1. Roof replacement or roof recover of existing low-
the replacement window meets the following conditions: slope roof coverings shall not be required to meet
1. The replacement window is the manufacturer’s largest the minimum design slope requirement of one-quar-
standard size window that will fit within the existing ter unit vertical in 12 units horizontal (2-percent
frame or existing rough opening. slope) in Section 1507 of the International Building
Code for roofs that provide positive roof drainage.
2. The replacement window is not part of a change of
occupancy. 2. Recovering or replacing an existing roof covering
Window opening control devices complying with ASTM shall not be required to meet the requirement for
F2090 shall be permitted for use on windows required to pro- secondary (emergency overflow) drains or scuppers
vide emergency escape and rescue openings. in Section 1502 of the International Building Code
for roofs that provide for positive roof drainage. For
702.6 Materials and methods. New work shall comply with
the purposes of this exception, existing secondary
the materials and methods requirements in the International drainage or scupper systems required in accordance
Building Code, International Energy Conservation Code,
with this code shall not be removed unless they are
International Mechanical Code, and International Plumbing
replaced by secondary drains or scuppers designed
Code, as applicable, that specify material standards, detail of and installed in accordance with Section 1502 of the
installation and connection, joints, penetrations, and continu- International Building Code.
ity of any element, component, or system in the building.
[BS] 705.2 Structural and construction loads. Structural
[FG] 702.6.1 International Fuel Gas Code. The follow-
ing sections of the International Fuel Gas Code shall con- roof components shall be capable of supporting the roof-cov-
stitute the fuel gas materials and methods requirements for ering system and the material and equipment loads that will
Level 1 alterations. be encountered during installation of the system.
[BS] 705.3 Roof replacement. Roof replacement shall
1. Chapter 3, entitled “General Regulations,” except
Sections 303.7 and 306. include the removal of all existing layers of roof coverings
down to the roof deck.
2. Chapter 4, entitled “Gas Piping Installations,”
except Sections 401.8 and 402.3. Exception: Where the existing roof assembly includes an
ice barrier membrane that is adhered to the roof deck, the
2.1. Sections 401.8 and 402.3 shall apply where
the work being performed increases the load existing ice barrier membrane shall be permitted to remain
on the system such that the existing pipe in place and covered with an additional layer of ice barrier
does not meet the size required by code. membrane in accordance with Section 1507 of the Interna-
Existing systems that are modified shall not tional Building Code.
require resizing as long as the load on the [BS] 705.3.1 Roof recover. The installation of a new roof
system is not increased and the system covering over an existing roof covering shall be permitted
length is not increased even if the altered where any of the following conditions occur:
system does not meet code minimums.
1. The new roof covering is installed in accordance
3. Chapter 5, entitled “Chimneys and Vents.” with the roof covering manufacturer’s approved
4. Chapter 6, entitled “Specific Appliances.” instructions.
2. Complete and separate roofing systems, such as
standing-seam metal roof panel systems, that are
SECTION 703 designed to transmit the roof loads directly to the
FIRE PROTECTION building’s structural system and that do not rely on
703.1 General. Alterations shall be done in a manner that existing roofs and roof coverings for support, are
maintains the level of fire protection provided. installed.

32 2018 INTERNATIONAL EXISTING BUILDING CODE ®
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