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2110.3 Panel Size
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The maximum area of each individual exterior standard-unit panel shall be 144 square feet (13.4 m2) when the design wind pressure is 20 psf (958 N/m2). The maximum panel dimension between structural supports shall be 25 feet (7620 mm) in width or 20 feet (6096 mm) in height. The panel areas are permitted to be adjusted in accordance with Figure 2110.3.1 for other wind pressures.
The maximum area of each individual exterior thin-unit panel shall be 85 square feet (7.9 m2). The maximum dimension between structural supports shall be 15 feet (4572 mm) in width or 10 feet (3048 mm) in height. Thin units shall not be used in applications where the design wind pressure exceeds 20 psf (958 N/m2).