The reinforcement staircase section CAD drawing which consist minimum reinforcement of stair are specified herein u.n.o. for stair length more than 6.00m and spiral more than 180°, top bars shall be spliced with a minimum of 300mm lap length, as shown above. location of lap splice shall be at the middle third of slab length, l. placement shall be alternate and all transverse bars shall be t12 - 150 u.n.o.
