1619.4.3 Load reductions for temporary structures.
BC § 1619.4.3
Temporary structures shall be permitted to reduce the design environmental loads required by this chapter in accordance with the specifications below. An action plan for load reductions shall be required in accordance with Section 1619.5.
1.Seismic resistance. Temporary structures do not need to consider seismic design. Temporary structures shall be designed for a minimum of 2 percent of the dead and live load as a service level lateral force. This load shall be used in lieu of seismic forces required by Section 1613 in load combinations including seismic forces. This load shall be distributed in proportion to the design loads, applied in any horizontal direction, and need not be combined with other environmental loads.
2.Wind. The wind design for temporary structures shall be computed as required by Section 1609. The basic wind speed used to design the structure shall be permitted to be reduced by applying a factor of 0.8. Exception: In lieu of applying a factor of 0.8, temporary structures may be removed from service at the environmental conditions determined by the manufacturer of the temporary structure. The threshold for removal of service shall be indicated on the design drawings required by Section 1619.4.1 as well as the action plan required by Section 1619.5.
3.Other environmental forces. Other environmental forces, including but not limited to snow, flood, ice, and temperature differential effects, shall be permitted to be reduced as appropriate for the limited seasonal exposure of the temporary structure.
