Hollowcore strength
Hollow core offers maximum structural efficiency with minimum slab depth, reducing the floor dead weight and providing longer spans.
Disproportionate collapse
Can we use Hollowcore for class 2B building – Bison manufacturing units with open troughs and side pockets suitable to tie units to the structure as engineers details.
Natural frequency
Contact Bison technical department for confirmation of the natural frequency rating for Hollowcore units.
"U" Value
Bison insulated Hollowcore unit can give a low value depending upon thickness of insulation, refer to Bison technical department for a specific value calculation.
Cantilever
Hollowcore units can be cantilever in the direction of span, subject to a design check. For side cantilever and end cantilevers requiring a cold bridge deface, Bison can incorporate this by using a pre-cast balcony unit tied back into plank and topping.
Sound
Bison Hollowcore units can be supplied with a mass of 300kg/m2 to comply with the sound regulations.
Fixing
All fixing to be located under or above the hollowcores for solid planks, fixing must avoid the reinft. For suitable fixings refer to web site for: Hilts, Fischer fixings, Spit fixings.
Holes
Up to 60mm diameter may be cut through Hollowcore. Larger holes can be factory formed subject to design voids up to 1.2m wide using Bison trimmer angles, which may be formatted onsite subject to a design check.