Seems that RISA requires a diaphragm to generate autoseismic forces. And the dynamic analysis will only work with a rigid diaphragm.
We're doing a project that has an external steel sculpture tied-back to the building diaphragm. Because the sculpture is outside the diaphragm, it seems RISA...
I work in a pretty good company. And we're designing an RC basement under the water table. It is lined with a loose-laid PVC membrane.
For crackwidth, everyone says we need to limit the basement wall/raft crackwidths to 0.2mm. But I keep questioning why 0.2mm when there is a flexible membrane...
Hello friends,
We're designing a building about 100ft x 330ft long, with 4 basement floors.
An expansion joint is provided from ground level to the roof.
However, I feel that we should NOT put an expansion joint in the basement box. This is because it is about 30ft underwater and in...
