Form deck works as a shape builder for the concrete or lightweight roofing material and is ultimately a stay in place form. Form deck is usually manufactured in maximum un-shored spans to provide a more economical approach to concrete or light weight insulation work. Composite decks are primarily used in floor systems. Composite deck is manufactured with a proprietary embossments to “grip” the concrete and are often paired with shear stud use, allowing the elevated composite slab to tie into the underneath supporting structure after the concrete slab has been poured and dried cured.