ARLORD
Well-known member
Am I correct on the following regarding Chapter 21 of ACI 318:
1) Unlike the Steel Seismic Provisions, ACI Chapter 21 does not refer to the building code overstrength load combinations, therefore ACI does not dictate when to use the overstrength factor for concrete design. If the overstrength factor is to be used in concrete design, then ASCE 7 will direct you to do so.
2)ACI Section 21.12 discusses concrete IMF. It addresses beams and columns, but not beam-to-column connection design like Section 21.5 for SMF. Am I corect to assume that there are no special seismic requirements for IMF Joint design.
1) Unlike the Steel Seismic Provisions, ACI Chapter 21 does not refer to the building code overstrength load combinations, therefore ACI does not dictate when to use the overstrength factor for concrete design. If the overstrength factor is to be used in concrete design, then ASCE 7 will direct you to do so.
2)ACI Section 21.12 discusses concrete IMF. It addresses beams and columns, but not beam-to-column connection design like Section 21.5 for SMF. Am I corect to assume that there are no special seismic requirements for IMF Joint design.