Concrete slabs require proper reinforcement placement to ensure structural strength and long-term durability. Reinforcing steel must be supported at the correct height within the slab so the concrete can properly surround the reinforcement and provide the required structural performance. Rebar chairs and slab bolsters are commonly used to support reinforcing bars and welded wire mesh during slab construction. These supports maintain the correct concrete cover and prevent reinforcement from shifting or sinking during concrete placement. Applications include commercial floor slabs, residential slabs, warehouse floors, and industrial concrete installations.