What are the nominal minimum covers for different structures?

Question

Accepted Answer

Nominal minimum covers for different structures are the minimum thickness of concrete or other materials required to protect the reinforcement from corrosion and provide durability.

Nominal minimum cover is specified to prevent corrosion of reinforcement and ensure structural integrity.
The minimum cover requirements vary depending on the type of structure and its exposure conditions.
For reinforced concrete structures, the nominal minimum cover is typically specified in terms of concrete cover over the reinforcement.
Examples of nominal minimum covers: 20 mm for interior concrete members, 30 mm for exterior concrete members, 40 mm for concrete exposed to severe environmental conditions.
For masonry structures, the nominal minimum cover is specified in terms of mortar cover over the reinforcement.
Examples of nominal minimum covers for masonry structures: 10 mm for interior walls, 15 mm for exterior walls.
The nominal minimum cover requirements are determined based on factors such as exposure to moisture, chemicals, and environmental conditions.

Accepted Answer

Footings-50mm
Columns-40mm
Beams and slab-25 &20mm resp.

What are the nominal minimum covers for different structures?

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