CIVIL SITE ENGINEER MUST KNOW THESE THINGS.

TOP THINGS THAT MUST KNOW BY CIVIL SITE ENGINEERS :

1. Minimum bars for square column is 4 nos and 6 nos for circular column.

2. Free fall of concrete is allowed maximum to 1.5 m height.

3. Appropriate water to cement ratio should be around 0.4 to 0.5.

4. Electrical conduits shall not run in column.

5. First class bricks should not absorb water more than 15% of its dry weight.

6.Minimum compressive strength of bricks is 3.5 N/mm2.

7. In steel reinforcement binding wire required is 8 kg per MT.

8. PH value of water for construction purposes should not be less than 6.

9. Initial and final setting time of cement is respectively 30 minutes and 600 minutes.

10. Curing days for ordinary portlnd cement should be minimum 10 days.

11. To find wieght of steel per meter, d2/162 formula has been used.

12.Minimum thickness of slab is 125 mm.

13. Minimum 3 specimens of cubes needed to determine average compressive strength of concrete.

14. Lapping is not allowed for the bars having diameters more than 36 mm.

15. Chair spacing maximum spacing is 1.00 m or 1 no per 1m2.

16. For dowels rod, minimum 12 mm diameter bars should be used.

17. Longitudinal reinforcement not less than 0.8% and more than 6% of gross C/S.

18. Dimension tolerance for cubes +- 2 mm.

19. 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.

20. Earth work excavation for basement above 3 m should be stepped form.


Comments

Popular Posts

TYPES OF CRACKS IN R.C.C COLUMNS

CHECKLIST FOR TERRACE WATERPROOFING (BRICK BAT COBA)

CLASSIFICATION OF STAIR AND THEIR USES