Footings: 50 mm
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Raft Foundation (Top) : 50 mm
Raft Foundation (Bottom): 75 mm
Raft Foundation (Side) : 75 mm
Beam: 25 mm
Strap Beam: 50 mm
Column :40 mm
Slab: 15 mm
flat Slab: 20 mm
Staircase: 15 mm
Retaining Wall: 20 – 25 mm
Water Retaining Structures: 2 0- 30 mm.