huangyhg

live load deflection
should i calculate the deflection based upon the full live load or the reduced live load when comparing it to l/360?
in this particular case, my reduced live load is 64% of the full specified live load. it is a hotel beam supporting the precast at the corridor.
jike: what is the reduced live load? building and city codes usually specify the design/stress/deflection criteria to be used. in a public structure, i would say be conservative.
regards
dave
jike,
be consistent with your design approach in sizing the beam. if you used the reduced live load to design the beam, use the reduced live load for serviceablity. the purpose of the reduction is to account for the fact that the structure may never actually see the full live load. in other words, compare apples to apples.
if you are comfortable from a design standpoint that the beam will not fail using the reduced live load, the same should apply for the deflection.
good luck.
reduced live load is the one to use..this is the true live load applied to the
i must agree with jae.
lutfi
i really try not to use live load reduction on any flatwork
jike
i support the viewpoint to be consistent. you size
i don't understand why you would design for full live load for deflection but a reduced live load for strength. if the beam could fail under full live what would it matter what the deflection is? so i also think you should be consistent with whichever you choose.

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