BEARING DESIGN DETAILS
*Not construction drawings | Consult Technocast for further info
ADAPTABILITY TO SUPPORTING STRUCTURES
Hollowcore slabs can be supported on virtually all types of structural materials. Slabs can be supported by cast in in-situ or pre-cast beams, steel beams or precast load-bearing walls and masonry walls.
For erection on steel structures, precast beams and walls, the slabs can be placed directly on the support structure or on a bearing strip.
On in-situ concrete structures, the hollowcore slabs are placed on plywood spacers for leveling purpose, and tamped with concrete mortar to ensure continuous support of the full width of the slab.
TECHNICAL DETAILS
*Prestressed slabs achieve longer spans than in-situ concrete of a similar depth. This achievement is attributed to high strength concrete and prestressed wire. This combination delivers increased structural performance overall, with an improved lateral load distribution where necessary for heavy point loads.
Standard depths available:
150mm wall | 150mm | 200mm | 250mm | 300mm
400mm | 500mm | Stadia | H-beams
Standard width:
1200mm
Minimum concrete strength at 28 days:
40/50mPa*
Suggested maximum span/depth ratio:
L/50
Suggested bearings:
On stonework - 150mm
On steel - 75mm
Fire rating:
Approx. 2 hour fire rating
Service holes:
Up to 110mm may be made in panels on site without affecting compatibility on engineers approval.
Weight saving:
30% or more than a solid, in-situ slab of the same depth.
Angled cuts:
Angled/skew ends can be precut in the factory with a specialized automated diamond tipped saw.
Grout & levelling screed:
Floor required sand based concrete grouting. Suggested 50mm leveling screed on top of slabs before finishing.
