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fd1978 (Structural)
26 Nov 07 17:42
I am working on a building that has a 4 level basement. The building is located in a high seismic zone and the geotech engineer has recommended a seismic load to be applied at 60% of the wall height. Should I use the total height of the wall or the floor-to-floor height?
Also, the software that I have will only handle single level basement wall design. Could anyone please recommend a software that will do multi level basement wall design?
hokie66 (Structural)
26 Nov 07 23:00
If the geotechnical engineer has recommended a seismic loading pattern, he should define it. Ask him.
As for multi-level basements, your loading is likely to be trapezoidal over the height of fill. Don't see why you can't just design it as a one way slab with the load cases as recommended by the geotechnical. 字串8
There really should be no need for software other than maybe a beam program in designing basement walls. Apply the loads, calculate the bending moments and shears, and design accordingly.
Pay special attention also to horizontal reinforcement to control restraint cracking.
msquared48 (Structural)
27 Nov 07 1:30
Unless your floor diaphragms are concrete, I do not think you want to throw the lateral soil loads of a four story basement into the building structure. You may need to think about some form of wall restraint like soldier pile and tiebacks. Mike McCann
McCann Engineering
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