1. Roof Girder Load Combinations
MD = 129 k-ft

2. Roof Girder Load Combinations
MLr = 22.4 k-ft

3. Roof Girder Load Combinations
MD = 129 k-ft MLr = 22.4 k-ft MW = k-ft
ML = 0 (roof) MS = 27.2 k-ft
Mu = 1.4 MD = 1.4 (129 k-ft) = 181 k-ft
Mu = 1.2 MD ML (MLr or MS)
Mu = 1.2 (129 k-ft) (0) (22.4 k-ft) = 166 k-ft
Mu = 1.2 (129 k-ft) (0) (27.2 k-ft) = 168 k-ft
Mu = 1.2 MD (MLr or MS) + (0.5 ML or 0.8 MW)
Mu = 1.2 (129 k-ft) (22.4 k-ft) (0) = 191 k-ft
Mu = 1.2 (129 k-ft) (27.2 k-ft) (0) = 198 k-ft by inspection, wind load will not control …
Mu = 0.9 MD MW = 0.9 (129 k-ft) (-12.8 k-ft) = 95.6 k-ft
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4. Roof Girder Load Combinations
1.2 MD MS ML = 198 k-ft

5. Floor Girder Load Combinations
ML = 43.1 k-ft

6. Floor Girder Load Combinations
MD = 129 k-ft All other loads are zero.
ML = 43.1 k-ft
Mu = 1.4 MD = 1.4 (129 k-ft) = 181 k-ft
Mu = 1.2 MD ML Mu = 1.2 (129 k-ft) (43.1 k-ft) = 224 k-ft
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