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Staged Construction

Staged Construction

Staged Construction

(OP)
Hello all,

Sould I use staged construction (sequential construction) only in service level combination?

Or should I also include them in ultimate level combinations and use for design? I think I should because I get positive moment values at the ends of 20th storey internal beams of a RC building with non-staged (regular) dead load case.

What do you think?

RE: Staged Construction

How is that possible?

BA

RE: Staged Construction

I would like a more complete description of what you think is the problem or question. I don't understand what do are doing or maybe asking.

Jim

RE: Staged Construction

You should use it for ultimate limit state as well. As you know, since you are already using it for service load analysis, those moments are not real and arise from unrealistic differential axial shortage of columns and cores, so a proper staged construction analysis (or an equivalent method) should be used.

RE: Staged Construction

(OP)
For example if the LRFD load combination is 1.2D + 1.6W + L+ 0.5S, will we replace Dead load with sequential load and obtain 1.2D_SQ + 1.6W + L+ 0.5S? I am omitting super dead loads here.

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