What is concrete cover for reinforcement? | | | |
- Concrete cover for steel bar is much necessary to protect the steel against corrosion (rusting) and to provide resistance against fire.
- If fire occurs in the building, the steel might lose so much strength to impair its reinforcing effect and the beams might collapse.
- For R.C.C. Slab, the cover should be 15 mm.
- For RCC column the cover should be 25 mm to 40 mm depending on the size of steel bar and on thickness of the column also.
- In case of footing of column or walls, the cover shall be 50 mm to 75 mm .
- In case of beams the cover should be 25 mm to 40 mm (1 to 1.5) depending on the size of steel bars.
- When the numbers of steel bars are more than spacer between the bars must be used.
- To keep crank bar in position, support of required height may be used under crank bar in the RCC slabs.
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| 3 Comment(s) |
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| | By S L Gupta (Civil Engg) - On 4/14/2010 4:20:42 PM | Dear Rout ji,
The detailing of reinforcement is depending on the span of the roof, size of room and slope of the roof. The detailing can be done after obtaining the required details.
Regards
S.L.Gupta
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| | By dillip rout - On 4/4/2010 11:44:47 AM | | Detailing of reinforcements in sloped roofs is required with drawings. |
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| | By dillip rout - On 4/4/2010 11:43:39 AM | | Informative site with much things to learn for any common man, Drawings be added for better understanding, |
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