One way and two way slab difference

what is the difference between one way and two way slab ? What is the difference between one way slab and two way slab? How can you tell one way and two way slab? What is slab and its types? What is the difference between slab and beam? What is the minimum thickness of slab? What is slab and its types? what is the difference between one way and two way slab in hindi? one way slab - When a slab is supported on the two different sides and the ratio of longer span to shorter span is more than 2, it will be considered as one way slab. In one way slab, one side is larger than the other one. In one way slab, as one side is greater than the rest one, the maximum load is conveyed by the larger side just so giving main reinforcement comparing to that load conveying side will be adequate, to provide adequate support on the bigger side, main reinforcement is given perpendicular to that side or parallel to the shorter direction. Distribution steel is provided in the longer direction ONE WAY SLAB REINFORCEMENT DETAILS - For one way slab, main reinforcement is computed by a formula that is determined by comparing compressive force as well as tensile forces. two way slab -Slab supported on two sides and bending takes place predominantly in one direction only is called One Way Slab. On the other hand, when slab is supported on all four sides and bending take place in two directions are said to be Two Way Slab. having ratio of longer length to its shorter length (Ly/Lx) greater than 2 is called one way slab otherwise as two way slab. In one way slab main reinforcement is parallel to shorter direction and the reinforcement parallel to longer direction is called distribution steel. In two way slab main reinforcement is provided along both direction.Slabs could be simply supported, continuous or cantilever. In two way slab the corners may be held down by restraints or may be allowed to lift up. Thickness of the slab is decided based on span to depth ratio specified in IS456-2000. Minimum reinforcement is 0.12% for HYSD bars and 0.15% for mild steel bars. The diameter of bar generally used in slabs are: 6 mm, 8 mm, 10 mm, 12mm and 16mm. The maximum diameter of bar used in slab should not exceed 1/8 of the total thickness of slab. Maximum spacing of main bar is restricted to 3 times effective depth or 300 mm whichever is less. For distribution bars the maximum spacing is specified as 5 times the effective depth or 450 mm whichever is less.Minimum clear cover to reinforcements in slab depends on the durability criteria . Generally 15mm to 20mm cover is provided for the main reinforcements. Alternate main bars can be cranked near support or could be bent at 1800 at the edge and then extended at the top inside the slab Torsion reinforcement shall be provided at any corner where the slab is simply supported on both edges meeting at that corner and is prevented from lifting unless the consequences of cracking are negligible. It shall consist of top and bottom reinforcement, each with layer of bars placed parallel to the sides of the slab and extending from the edges a minimum distance of one fifth of the shorter span. The area of reinforcement per unit width in each of these four layers shall be three quarters of the area required for the maximum midspan moment per unit width in the slab. Torsion reinforcement equal to half that described above shall be provided at a corner contained by edges over only one of which the slab is continuous. #OneWaySlab #TwoWaySlab #Slab

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