Why are Stools Used in Reinforcement Detailing

Stools are used to separate the top reinforcement mesh and bottom reinforcement mesh. Dimension of the Stools could be change as requirement. Those should be strength enough to bear the loads without changing the gap of two layers. 12mm or 16mm bars are used to make the stools.

Stool’s height = Slab thickness – (2 x Cover + diameter of the top and bottom bars)

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