Page 396 - 2018_IRC

WALL COVERING

R603.9.5 for wall bracing requirements for masonry veneer wood or cold-formed steel floors that are designed to sup-
for cold-formed steel construction. port the loads imposed.
Exceptions: R703.8.2 Exterior veneer support. Except in Seismic
1. For buildings in Seismic Design Categories A, B Design Categories D , D and D , exterior masonry
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and C, exterior stone or masonry veneer, as speci- veneers having an installed weight of 40 pounds per
2
fied in Table R703.8(1), with a backing of wood or square foot (195 kg/m ) or less shall be permitted to be
steel framing shall be permitted to the height speci- supported on wood or cold-formed steel construction.
fied in Table R703.8(1) above a noncombustible Where masonry veneer supported by wood or cold-formed
foundation. steel construction adjoins masonry veneer supported by
the foundation, there shall be a movement joint between
2. For detached one- or two-family dwellings in Seis- the veneer supported by the wood or cold-formed steel
mic Design Categories D , D and D , exterior stone construction and the veneer supported by the foundation.
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1
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or masonry veneer, as specified in Table R703.8(2), The wood or cold-formed steel construction supporting the
with a backing of wood framing shall be permitted masonry veneer shall be designed to limit the deflection to
to the height specified in Table R703.8(2) above a 1 / of the span for the supporting members. The design of
600
noncombustible foundation. the wood or cold-formed steel construction shall consider
R703.8.1 Interior veneer support. Veneers used as inte- the weight of the veneer and any other loads.
rior wall finishes shall be permitted to be supported on

SEALANT

FLASHING AND WEEPHOLES a

WALLBOARD

MASONRY VENEER WATER-RESISTIVE
BARRIER b

METAL TIE b

WATER-RESISTIVE BARRIER b

1-IN. AIRSPACE OR
1-IN. GROUTED SPACE c SHEATHING

MASONRY VENEER
FLASHING WEEPHOLES a
ANCHOR BOLT

GROUTED FULL

For SI: 1 inch = 24.5 mm.
FIGURE R703.8
TYPICAL MASONRY VENEER WALL DETAILS e
(continued)

2018 INTERNATIONAL RESIDENTIAL CODE ® 371
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