Garde Slab Design

Also the longer to shorter span ratio is less than 2 in all panel slabs so all slabs panels are two way slabs.

Garde slab design. Design example the layout of a floor slab is shown in figure 1 below. Considering m20 grade of concrete and fe 500 steel of diameter of 10 mm. The materials to be used are grade c25 concrete and grade 500 reinforcement.

The wire reinforcing institute recommends the use of the subgrade drag theory for slabs up to 150 feet in length. In general a slab on grade strength is largely dependent on the quality of the soil beneath it. Grade slabs are framed in areas where the ground doesn t freeze.

Assume the thickness of slab take 4 cm per metre run of the span. If there are no adverse soil conditions the design and analysis of a slab on grade requires only the determination of the strength of the sub grade in terms of k. A general procedure for.

Location of grade slab and rcc are different as the grade slab rests directly on excavated soil and its function is to provide base transfer loads from foundation to soil or to prevent alkaline acidic effects on foundation. This simple slab design differs from the reinforced slab technique used for elevated concrete floors and does not require support from underground footers or foundation walls. This type of slabs may or may not have reinforcement in it.

The decision of inserting reinforcement is based upon the floor loads and local building codes. December 23 2020 in construction a grade slab is a relatively flat concrete structure built on top of the soil at ground level. It is not an rcc m20 slab therefore the design differs.

Design the floor to satisfy ultimate and serviceability limit state requirements. Find the effective span which is lesser of i distance between centres of bearings and ii clear span and effective depth. The result is a lightly reinforced slab designed to offset the effects of temperature and shrinkage of the concrete.