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These represent the building mass bearing on the wall from a roof or floor just above it tributary to that wall, and the self weight of the wall. They apply to hold-down forces created by both seismic and wind loads.
When calculating tension hold-down forces, the effect of these loads is multiplied by the counteracting load combination factor for before being subtracted from the overturning moment due to lateral shear forces. For compression forces at the other end of the wall, the dead force is factored by the regular load combination factor before being added to overturning forces.
Dead loads should not be added to model the building mass for generation of seismic loads, there is a separate input for building masses.
It is possible to distinguish wall dead loads from other dead loads in order to facilitate Jhd calculations by means of a check box in the load input view.