The unit of "Shear limit curve" of "limit state material"

[wangbin_tongji]

Hi,

When I use the limit state material to simulate the flexure-shear column, I am confused this sentence "The drift capacity model requires all input variables for the OpenSees model to be specified in kips and inches, with the exception of the concrete compressive strength which must be given in psi." page 338 in the PEER report by Dr. Elwood.

Does the unit must be Kips when we input the force? Can I use the lb, in and psi for the simulation?