Page 300 - 2018_IRC

WALL CONSTRUCTION

R607.3.2 Thin units. The specified thickness of thin units R607.4.4 Curved panels. The width of curved panels shall
1
shall be not less than 3 / inches (79 mm) for hollow units conform to the requirements of Sections R607.4.1,
8
and not less than 3 inches (76 mm) for solid units. R607.4.2 and R607.4.3, except additional structural sup-
R607.4 Isolated panels. Isolated panels of glass unit ports shall be provided at locations where a curved section
masonry shall conform to the requirements of this section. joins a straight section, and at inflection points in multiple-
curve walls.
R607.4.1 Exterior standard-unit panels. The maximum
area of each individual standard-unit panel shall be 144 R607.5 Panel support. Glass unit masonry panels shall con-
2
square feet (13.4 m ) where the design wind pressure is 20 form to the support requirements of this section.
pounds per square foot (958 Pa). The maximum area of R607.5.1 Deflection. The maximum total deflection of
such panels subjected to design wind pressures other than structural members that support glass unit masonry shall
l
20 pounds per square foot (958 Pa) shall be in accordance not exceed / .
600
with Figure R607.4.1. The maximum panel dimension R607.5.2 Lateral support. Glass unit masonry panels
between structural supports shall be 25 feet (7620 mm) in shall be laterally supported along the top and sides of the
width or 20 feet (6096 mm) in height. panel. Lateral supports for glass unit masonry panels shall
R607.4.2 Exterior thin-unit panels. The maximum area be designed to resist not less than 200 pounds per lineal
of each individual thin-unit panel shall be 85 square feet feet (2918 N/m) of panel, or the actual applied loads,
2
(7.9 m ). The maximum dimension between structural whichever is greater. Except for single-unit panels, lateral
supports shall be 15 feet (4572 mm) in width or 10 feet support shall be provided by panel anchors along the top
(3048 mm) in height. Thin units shall not be used in appli- and sides spaced not greater than 16 inches (406 mm) on
cations where the design wind pressure as stated in Table center or by channel-type restraints. Single-unit panels
R301.2(2) exceeds 20 pounds per square foot (958 Pa). shall be supported by channel-type restraints.
R607.4.3 Interior panels. The maximum area of each Exceptions:
individual standard-unit panel shall be 250 square feet 1. Lateral support is not required at the top of panels
2
(23.2 m ). The maximum area of each thin-unit panel shall that are one unit wide.
be 150 square feet (13.9 m ). The maximum dimension
2
between structural supports shall be 25 feet (7620 mm) in 2. Lateral support is not required at the sides of pan-
width or 20 feet (6096 mm) in height. els that are one unit high.
70

60

50
DESIGN WIND PRESSURE (psf) 40 STANDARD UNIT

PANELS
30

20

10

0
0 50 100 150 200 250 300
MAXIMUM AREA OF PANEL (SQUARE FEET)

For SI: 1 square foot = 0.0929 m , 1 pound per square foot = 0.0479 kPa.
2
FIGURE R607.4.1
GLASS UNIT MASONRY DESIGN WIND LOAD RESISTANCE

2018 INTERNATIONAL RESIDENTIAL CODE ® 275
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