Equipment Anchorage - Seismic
Equipment Anchorage - Seismic
(OP)
When calculating anchorage forces for mechanical equipment, is the total design lateral seismic force, Fp, the actual numerical value to be used to determine the anchorage forces?
No other inclusion of Fp into load cases needs to be included. Now this is an ultimate load; so using LRFD provisions we could consider this a factored load? What about ASD provisions?
No other inclusion of Fp into load cases needs to be included. Now this is an ultimate load; so using LRFD provisions we could consider this a factored load? What about ASD provisions?






RE: Equipment Anchorage - Seismic
It also is an ultimate load so if you are using ASD procedures you would use ASD load combinations which have a 0.7 factor on E to bring it down to unfactored status.
RE: Equipment Anchorage - Seismic
In this case I do not have any additional live loads or dead loads other than the equipment weight. I would also use 0.6D in determing the resisting moment from the self weight of the equipment.
Simliarly if working with the ultimate load Fp the resisting moment would be based on a factored dead load (1.2)
RE: Equipment Anchorage - Seismic
RE: Equipment Anchorage - Seismic