Place rebar, pour concrete, knock out modular formwork, and presto. You get Holedeck’s waffle slab with its signature openings. The integrated chases reduce the amount of concrete needed by 15%, while the system itself can reduce a structure’s floor-to-floor height since utilities and other building system components can run through the slab instead of under it. Intended for buildings with 33'- to 60'-clear spans. holedeck.com