Sizer implements the KD load duration factor according to the following design code clauses from CSA O86
The load types referred to in the subtopics below are D = dead W = wind S = snow H = earth,groundwater E = earthquake L = live (use,occupancy) Ls =live (storage,equipment) Lt = live (liquids in tanks) Ds = dead load due to soil.
not created for combinations that contain W , E or S loads, because these have a KD factor of 1.15 or 1.0, so the load combination cannot possibly have a factor of 0.65..