A beam that is part of a rigid frame has end moments and mid-span moments for dead, live and earthquake loads shown below. Determine the governing load combination for both negative and positive moments at the ends and mid-span of the beam. Earthquake load can act in either direction, generating both negative and positive moments in the beam.
End Moments(ft-kip) | Mid-Span Moments(ft-kip) |
Dead Load −180 | +90 |
Live Load −150 | +150 |
Earthquake ±80 | 0 |
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