POINTS TO REMEMBER FOR CIVIL SITE ENGINEERS

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Some Basic knowledge Points to remember for civil site engineer, Should remember for site work (civil site engineer responsibilities) and construction work of civil engineering field,which will be very very good and important points for Civil Site Engineers

1. Lapping is not allowed for the bars having diameters more than 36 mm.
2. Chair spacing maximum spacing is 1.00 m (or) 1 No per 1m2. For dowels rod minimum of 12 mm diameter should be used.
3. Chairs minimum of 12 mm diameter bars to be used.
4. Longitudinal reinforcement not less than 0.8% and more than 6% of gross C/S.
5. Minimum bars for square column is 4 No’s and 6 No’s for circular column.
6. Main bars in the slabs shall not be less than 8 mm (HYSD) or 10 mm (Plain bars) and the distributors not less than 8 mm and not more than 1/8 of slab thickness.
7. Minimum thickness of slab is 125 mm.
8. Free fall of concrete is allowed maximum to 1.50m.
9. Lap slices not be used for bar larger than 36 mm.
10. Water absorption of bricks should not be more than 15 %.
11. Compressive strength of Bricks is 3.5 N / mm2.
12. In steel reinforcement binding wire required is 8 kg per MT.

Density of Materials-

13. Bricks 1600 – 1900 kg/m3 Concrete block 1900 kg/ m3 - 2400 kg/m3


14. Reinforced concrete 2310 – 2700 kg/ m3

15. Curing time of RCC Members for different types of cement-

    A. Super Sulphate cement 7 days
    B. Ordinary Portland cement OPC 10 days
    C. Minerals & Admixture addedcement 14 days

16. BRICK-

Weight = 3.17 - 3.80 Kg
Water absorption 12 to 15%
Compressive strength = 36Kn/cm2
230mm Wall/m3 = 460 Bricks + 20Cft Sand + 66Kg Cement