Crank lengths are used because the moments at the edge strips are negative while that at mid span are positive so reinforcement are alternatively provided at the top and bottom respectively..
so just to have connection between the reinforcement
and for the slab to behave as a single unit by providing continuous bars, cranking is done in slabs..
In order to estimate rcc roof slab you must measure the roof and calculate its area. Then you must contact a professional to see how much slab will be needed.
construction joints are leave in RCC Slab one third of span.
You may increase the slab thickness and/or calculate the steel reinforcement required to withstand against the applied shear stress.
all elements like RCC slab, beam, column, wall and staircase can be a prefabricated RCC element..prestressed prefabricated RCC members also available in the market.
About 2.27 kg of steel bars is used for the RCC slab of size 50' 18' 4.5.
In order to estimate rcc roof slab you must measure the roof and calculate its area. Then you must contact a professional to see how much slab will be needed.
construction joints are leave in RCC Slab one third of span.
It is not always mandatory that we will have a RCC bed below any brick wall. In ground floor without basement the brick wall stands on common concrete slab not RCC slab, in other floors slab has to be made of RCC, hence brick wall stands on RCC.
You may increase the slab thickness and/or calculate the steel reinforcement required to withstand against the applied shear stress.
all elements like RCC slab, beam, column, wall and staircase can be a prefabricated RCC element..prestressed prefabricated RCC members also available in the market.
About 2.27 kg of steel bars is used for the RCC slab of size 50' 18' 4.5.
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The minimum area of steel required in RCC slab as per BS code is 0.12 to 0.15% of total area. The maximum diameter of bar in slab, shall not exceed D/8, where D is the total thickness of slab.
2500N/m3
a slab of a house suupported with RCC frame column & beam, What will be the bending moment in different spans. ER. J.S.DEORI
That would depend on the kind of concrete. Normally longer is better. The slower the curing process the stronger the concrete.
Steel Cannot be calculated based on cft. Load bearing capacity is required to calculate steel.