(
IS 456:2000 ( Part 1)
1. Modulus Elasticity of Steel can be taken as 200 KN/m2 ( Refer to clause 5.6.3 of IS 456:2000)
2. Modulus elasticity of concrete taken as Ec = 5000√fck
Where, fck is Characteristic compressive strength of concrete in 28 days.(Refer to the clause 6.2.1 of IS 456:200)
3.We can know about the workability of concrete form slump test.
Workability of Concrete Degree of workability Slump(mm)
Workability of Concrete Degree of workability Slump(mm)
- Shallow Section Very low < 25
- Mass concrete,Hand Placed Low 25-75
- Heavy reinforcement section in slabs, Medium 50-100
- Trench fill, In situ-piling. High 100-150
- Tremic concrete Very High >150
SLUMP TEST FOR WORKABILITY OF CONCRETE
4. Permissible limit of Solids in water used in concrete
- Organic- 200 mg/L.
- Inorganic- 3000 mg/L.
- Sulphate- 400 mg/L.
- Chlorides- 2000 mg/L.
- Suspended Matter- 2000 mg/L.
5. Spacer or chairs should be place at maximum Spacing of 1 Meter ( Clause 12.3.2 page no 26).
PLASTIC SPACER
7. The diameter of reinforceing bars shall not exceed one eight of total thickness of slab( clause 26.5.2 page no 45).
8. Main bar column shall not be less than 12 mm in diameter( clause 26.5.3.1d page no 48).
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