Hollowcore: Precast concrete hollowcore floors have been widely used in Canada and globally since the early 1960s. Hollowcore is produced using a dry concrete mix and vibrating machines that extrude the concrete into sections with continuous voids along the span. These voids reduce the slab's weight by approximately 50% compared to a solid slab of equivalent thickness.

Hollowcore floors are used extensively in health care, educational, commercial, residential, and industrial facilities. This versatile floor system is ideal for Total Precast structures and hybrid systems. Hollowcore slabs offer significant advantages, including longer spans of up to 16 meters without internal supports, compared to other floor systems like solid slabs. A typical hollowcore section is 1220 mm wide, with common thicknesses of 200, 250, 300, and 350 mm.

Other precast floor systems: When longer spans without any internal supports are required, other precast products such as double tees, or single tees can be used to reach spans of 20-30 m. Solid precast slabs of various sections can be considered for a floor system and the repeatability of the sections can lower the manufacturing cost.