Common Defects in Flat/RCC Roofing
Slopes are not proper and lot of depression is existed on the surface where water is stagnated.Drip courses are not constructed according to required specifications.
- Broken tiles which create depression are used in tile tracing.
- Supports of water tanks are not finished properly.
- Cement concrete ‘Gola’ with joints of walls and roof is not properly finished.
- Mouth of rainy water pipe is higher than top ‘Khurra’.
Raw Materials for RCC Slab Roof
1. Cement
2. Coarse aggregate
3. Fine aggregate
4. M.S. Steel bar
5. Binding wire
6. Water
7. Shuttering materials such as wooden Ballies, Planks, and Iron Plates etc.
Advantages of RCC Slab
- Energy efficient.
- Does not catch fire.
- Provides solid and durable roofing.
- Very versatile and provides greater protection.
- Reduces costs of insurance and has resale value.
Various Ratios of RCC
RCC denotes Re-in forced Cement Concrete in which cement, sand and Bajri are laid with the help of mild steel. This is most important part of the structure.Generally 1:2:4 and 1:1.5: 3 ratios of RCC are used in construction work.