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Concrete Cover of Different Concrete Members
1. Column Footing and other concrete members below ground level - 75 mm
2. Slabs w/ Reinforcement Bars 36 mm dia. bar and smaller - 20 mm
3. Columns and Beams - 40mm

Purpose of Concrete Cover:
1. To protect the reinforcement bars from environmental effects to prevent corrosion.
2. To give reinforcing bars sufficient embedding to enable them to be stressed without slipping.
3. To provide thermal insulation which protects the reinforcement bars from fire.

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