Special concrete moment frame
Special concrete moment frame
(OP)
We are designing a concrete building to SDC C (IBC 2003). From Table R21.1.1 of ACI 318, an intermediate moment frame system is expected. This allows the use of two-way slabs without beams in Cl 21.3.6. My question is: will it be acceptable to use concrete shear walls as the only seismic-force-resisting system? Columns and flat slabs are to be designed to withstand permanent loads only. Thanks.






RE: Special concrete moment frame
According to 21.2.1.3, if you use shearwalls, they do not have to meet chapter 21 unless you use "special" shearwalls.
RE: Special concrete moment frame
My question was coming from Table R21.1.1, ACI318-2008. Clause 21.3 (intermediate moment frames) is required as the frame members in column where SDC is equal to C. I want to use shear walls, instead of intermediate moment frames, and wish to know if this is okay. Please see attachment.
RE: Special concrete moment frame