Determine the dead load that is acting on the slab.
Roof slab reinforcement design.
Such slabs left unconnected to walls caused many deaths in the 2005 quake from school roof collapses.
Identify the type of slab.
Reinforced concrete slabs are heavier and generate higher seismic forces in an event.
However the complexity of the generalized approach.
The maximum diameter of bar used in slab should not exceed 1 8 of the total thickness of slab.
This is the design of roof how the reinforcement has been lated over here and how to be the covering lated over is 6 x6 inch and used 10 and 12 mm diameter bars.
According to the 1995 aci code all two way reinforced concrete slab systems including edge supported slabs flat slabs and flat plates are to be analyzed and designed according to one unified method such as direct design method and equivalent frame method.
6 mm 8 mm 10 mm 12mm and 16mm.
Design of slab examples and tutorials by sharifah maszura syed mohsin example 1.
The slab has to carry a distributed permanent action of 1 0 kn m2 excluding slab self weight and a variable action of 3.
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.
Thickness of the slab is decided based on span to depth ratio specified in is456 2000.
Determine h min and round it to higher 10mm multiple.
Reinforcement projecting from the concrete or masonry walls is bent to the slope of the roof and lapped with the roof s rebar to pro vide secure anchorage.
Minimum reinforcement is 0 12 for hysd bars and 0 15 for mild steel bars.
Rcc roof slab reinforcement details if you follow the minimum standards for structural design for modern day buildings you can opt for creating the rcc without a beam it is called a flat slab.
Maximum spacing of main bar is restricted to 3 times effective depth or 300 mm whichever is less.
In this video we learn how to reinforcement design in slab in autocad in hindi dear all slab two type ke hote hain one way slab two way slab slab me reinforc.
Should not be less than 110 mm for rooms should not be less than 75 mm for sunshades.
Assume the thickness of slab take 4 cm per metre run of the span.
Flexural reinforcement must be greater than 0 0018 psi or the shrinkage reinforcement.
Find the effective span which is lesser of i distance between centres of bearings and ii clear span and effective depth.
A stiff concrete mix specified at 3000 psi is pumped into place as workers advance up the slope to vi brate and finish the concrete to the desired thickness.
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.
Design procedure of one way slab.
