Extra bars are given as 10 mm dia center to center. The diameter of two alternate bent up bars is given as 10 mm center to center. The thickness of the waist slab is given as 125 mm. The width of both landing is given as 1000 mm and the width of beams provided on both landing is 250 mm. Hypotenuse is calculated as 292 mm through Pythagoras theorem. The cross section of the staircase contains the following dimensions:. The width of landing 2 is also taken as 2500 mm The width of landing 2 is also taken as 1000 mm The width of the waist slab is taken as 1200 mm The length of the waist slab is taken as 2500 mm The length of landing 1 is taken as 2500 mm The width of landing 1 is taken as 1000 mm There are also two waist slabs but here one waist slab is considered for the calculation purpose. In the example provided in the video, there are two landings as landing 1 and landing 2.
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