Рет қаралды 18,137
How can we design a cantilever slab?
Ans: Detailed design of Concrete cantilever slab is shown in this lecture video.
Cantilever Slab
A cantilever is a rigid structural element, such as a beam or a plate, anchored at one end to a (usually vertical) support from which it protrudes; this connection could also be perpendicular to a flat, vertical surface such as a wall. Cantilevers can also be constructed with trusses or slabs. When subjected to a structural load, the cantilever carries the load to the support where it is forced against, by a moment and shear stress.
Cantilever slabs are a typical one way slabs. They are projections from wall face of lintel beams or floor slabs.
Even while designing they are considered as one-slabs with cantilever fixed or continuous at supports.
The reinforcement provided at the tension face should be checked for anchorage length near supports. The thickness of such slabs is varied from max. at the fixed end to the min. of 100 to 150 mm at the free end. Distribution steel should be provided at the transverse direction (for the coverage of shrinkage= Temperature Steel).
Proper selection of depth and detailing of reinforcements will safeguard against excessive deflections and cracking of the cantilever slabs. Also, cantilever structural elements should be checked for safety against overturning.
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