Covering for reinforcement in concrete is very important. The thickness of cover depends on environmental conditions and type of structural member. The correct cover shall be maintained by cement mortar cubes (blocks) or other approved means.Concrete cover for reinforcement in the site was as follows. (This may vary depending on the construction site)
Cover block used in slab
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Ground Beams
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50mm Surface cast against ground
40mm Other face/on blinding
30mm Top face 40mm earth face
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Ground Slabs
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30mm Top face ;40mm earth face
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Suspended Slabs
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25mm Internal & external
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Beams, Lintels & Capping beams
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30mm Internal & external
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Columns and Pedestals
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30mm Surfaces cast against ground
30 mm Internal & external surfaces in contact with ground cast
against shutter |
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Walls
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40mm Surfaces cast against ground
30mm Internal & external surfaces in contact with ground cast
against shutter |
Cover blocks used in reinforcement
Cover block is key part of the reinforcement work. It is used to maintain the cover between shuttering boards and the mesh of the reinforcement. In our site 1:2 mortars and binding wire was used for cover block. Cover block size 1.5″ x 1.5″ and thickness is depending on situation
Cover blocks used in floor reinforcement
