1605.2 Load combinations using strength design or load and resistance factor design.
BC § 1605.2
Where strength design or load and resistance factor design is used, buildings and other structures, and portions thereof, shall be designed to resist the most critical effects resulting from the following combinations of factored loads: 1.4 (D + F)(Equation 16-1) 1.2 (D + F) + 1.6 (L + H) + 0.5 (Lr or S or R) (Equation 16-2) 1.2 (D + F) + 1.6 (Lr or S or R) + 1.6H + (f1L or 0.5W)(Equation 16-3) 1.2 (D + F) + 1.0W + f1L + 1.6H + 0.5 (Lr or S or R)(Equation 16-4) 1.2 (D + F) + 1.0E + f1L + 1.6H +f2S(Equation 16-5) 0.9D + 1.0W + 1.6H(Equation 16-6) 0.9 (D + F) + 1.0E + 1.6H(Equation 16-7) where: f1 = 1 for places of public assembly live loads in excess of 100 pounds per square foot (4.79 kN/m 2 ), and parking garages; and 0.5 for other live loads. f2 = 0.7 for roof configurations (such as saw tooth) that do not shed snow off the structure, and 0.2 for other roof configurations. Exceptions: 1. Where other factored load combinations are specifically required by other provisions of this code, such combinations shall take precedence.
2.Where the effect of H resists the primary variable load effect, a load factor of 0.9 shall be included with H where H is permanent and H shall be set to zero for all other conditions.
