Anchor bolt design question
Anchor bolt design question
(OP)
When designing anchor bolts for tanks and silos on braced legs, ASCE 7-05 states that the element design force is to be multiplied by omega (ASCE 7-05, 15.7.3 (a)) for anchorage. Thus, in addition to using factored loads for concrete design, and a .75 reduction on your allowables for anchorage design (ACI APP D, RD.3.3) in high seismic areas, you are then multiplying your loads by omega (2 in this case) for design of your anchor bolts. Following this method, we end up having to use substantially larger anchor bolts and mat thicknesses than what we used in the past. We have discussed using service loads multiplied by omega for design of the anchorage using ACI appendix D, instead of factored loads. Has anybody else had experience with this? Does this sound unreasonable?






RE: Anchor bolt design question
RE: Anchor bolt design question
RE: Anchor bolt design question
i feel that all these factors are being introduce to make sure there is no brittle failue due to failure of bolts.
RE: Anchor bolt design question