Garde Slab Design

Design of typical floor slab.

Garde slab design. The design method is followed as per annexure d of is 456 2000. The wire reinforcing institute recommends the use of the subgrade drag theory for slabs up to 150 feet in length. Design example the layout of a floor slab is shown in figure 1 below.

Design the floor to satisfy ultimate and serviceability limit state requirements. The result is a lightly reinforced slab designed to offset the effects of temperature and shrinkage of the concrete. December 23 2020 in construction a grade slab is a relatively flat concrete structure built on top of the soil at ground level.

We have thickness of slab as 130 mm. In general a slab on grade strength is largely dependent on the quality of the soil beneath it. The thickness of grade slab is kept minimum 4 inches.

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. The slab is outside buildings which subjected to 1 hr fire resistance and design for 50 years design life. Considering m20 grade of concrete and fe 500 steel of diameter of 10 mm.

Grade slabs are framed in areas where the ground doesn t freeze. Find the effective span which is lesser of i distance between centres of bearings and ii clear span and effective depth. Also the longer to shorter span ratio is less than 2 in all panel slabs so all slabs panels are two way slabs.

Your uniform load of 100 psf will generate only minimal flexural stresses in the concrete largely due to irregularities of the slab thickness and non uniform compaction of the soil beneath it. A general procedure for. Steps to be followed in the design of slab assuming suitable bearings not less than 10cm find the span of the slab between the centers of bearings.