I found this after a quick search, it looks fairly similar to the Prest Lock 2.
http://www.ridgurak.com/products/pallet-rack/teardrop-pallet-rack/
Maybe you could give them a call and see if they have any information.
Thanks structSU10, it makes sense now to consider that the force would be arbitrary because the structure's stiffness will remain the same regardless of the fi that I used.
Thanks!
I am in the middle of determining seismic loading for the design of overland conveyor bent foundations. We have chosen to identify the structure as an inverted pendulum. In 15.4, I see that the fundamental period (T) of the structure cannot be calculated per the usual 12.8-7, 12.8-8, 12.8-9...