Advantages of Hollowcore
Speed: much faster installation, shows up on site ready to install, next story goes up quicker, other subs get to do their work.
Safety: smaller crew and no pole shores to erect, less tools around the job site (less OSHA issues)
Cost Efficiency: less man hours, less rebar, uniform production assures better quality control and consistency of concrete; lower maintainence and insurance cost
Versatility: bearing of block, steel, concrete framing; long spans; cantilevers; steel hangers; number of stories does not impact applicability of hollowcore
Weight: much lighter, minimal if any: deflection, shear, and torsion
Design: planks are cut to desired shape (dogleg, angle cuts), mechanical specifications (chases, penetrations)
Fire Resistant: available with 1, 2, and 3 hour fire ratings
Soundproofing: dense composition can achieve high Sound Transmission Class ratings
Soundproofing
