1607.10.1 Basic Uniform Live Load Reduction
Subject to the limitations of Sections 1607.10.1.1 through 1607.10.1.3 and Table 1607.1, members for which a value of K LLAT is 400 square feet (37.16 m2) or more are permitted to be designed for a reduced uniformly distributed live load, L, in accordance with the following equation:
|L||=||Reduced design live load per square foot (m2) of area supported by the member.|
|Lo||=||Unreduced design live load per square foot (m2) of area supported by the member (see Table 1607.1).|
|KLL||=||Live load element factor (see Table 1607.10.1).|
|AT||=||Tributary area, in square feet (m2).|
|Interior columns |
Exterior columns without cantilever slabs
|Edge columns with cantilever slabs||3|
|Corner columns with cantilever slabs |
Edge beams without cantilever slabs
|All other members not identified above including: |
Edge beams with cantilever slabs
Members without provisions for continuous shear
transfer normal to their span
Live loads that exceed 100 psf (4.79 kN/m2) shall not be reduced.
- The live loads for members supporting two or more floors are permitted to be reduced by a maximum of 20 percent, but the live load shall not be less than L as calculated in Section 1607.10.1.
- For uses other than storage, where approved, additional live load reductions shall be permitted where shown by the registered design professional that a rational approach has been used and that such reductions are warranted.