Floor Slab Design Example

Shear strength of beamless slabs usually a controlling factor.
Floor slab design example. The layout of a floor slab is shown in figure 1 below. Design of slab examples and tutorials by sharifah maszura syed mohsin example 1. The design and detailing of these slabs are an involved process as the interaction between the natural and or made ground and the rigid concrete floor slab presents challenges in terms of cracking movement and flatness. The slab has to carry a distributed permanent action of 1 0 kn m2 excluding slab self weight and a variable action of 3 0 kn m2.
For example a th0 ree axle truck pounds per square foot the floor slab should be with axle loads of 6 14 and 14 kips will be designed in accordance with tm 5 809 2 afm 88 considered as three forklift truck axles one in 3 chap. The thickness of a floor slab must be determined early in design because the weight of the slab is an important part of the dead load of the structure. Concrete grade 30 mpa yield strength of reinforcement 500 mpa variable action on floor 2 5 kpa fire rating 1 hour 30 minutes. The efm solution is also used for a detailed comparison with the analysis and design results of the engineering software program spslab.
The minimum thickness can be determined by many factors. Simply supported one way slab a rectangular reinforced concrete slab is simply supported on two masonry walls 250 mm thick and 3 75 m apart. Slab must be thick enough to provide adequate shear strength.