Question

in which system are long pans or dome pans used to form voids on the underside of slabs? concrete joist suspended slab precast concrete floor post - tensioned slab floor

Explanation:

In a concrete joist system, long pans or dome pans are placed on top of the forms. When concrete is poured, these pans create voids on the underside of the slabs. This helps in reducing the weight of the slab while maintaining its structural integrity.

Answer:

concrete joist