Important points for civil engineers

1. Height of parapet wall should be  = 1 m.
2. Thickness of DPC is                     = 2.5 cm.
3. Height of building                         = 3.15m.
4. Height of window                         = 2.1 m.
5. One bag of cement                        = 1.25 ft³
6. Weight of one cement bag is         = 50 kg.
7. Minimum thickness of slab           = 125 mm(5")
8. No. of cement bags/m³                  = 28.8 bags
9. Lintel thickness                              = 15 mm
10. Lintel is provided @ 2.4 m in case of brick wall.
11. Minimum diameter of bars used in slab = 8 mm.
12. Minimum diameter of bars used in column = 12mm.
13. Minimum diameter of bars used in dowels =12mm
14. Maximum diameter of bars in slab              = ( 1/8)  x thick of slab
15. Maximum chair spacing                               = 1 meter
16. Dimensional tolerance of cube                     = +  2 mm
17. Maximum water absorption of first class brick = 15 % of its dry weight
18. Initial setting time of cement                             = 30 min
19. Final setting time of cement                             = 10 hours
20. DPR                                                                  = Detailed Project Report
21. Unit weight: 
1. RCC  = 25 kn/m³ = 25000 N/m³
2. PCC  = 24 kn/m³ = 24000 N/m³
3. Steel = 7850 kg/m³
4. Brick = 1600 kg/m³ = 16 kn/m³
5. Soil = 1800 kg/m³ = 18 kn/m³
22. 1 Gallon = 3.78 liters
23. Minimum no. of bars
1. For square columns = 4 bars
2. For circular columns = 6 bars
24. Standard sand in India is obtained from Ennore Tamil Nandu.
25. 1 Yard = 3 feet
26. Weight of steel = D²/162.2 kg/m or D²/533 kg/ft
27. Size of concrete testing cube = 150 mm x 150 mm x 150mm
28. Concrete cube is filled in 3 layers.
29. Slump cone is filled in 4 layers.
30. Cement should be used with in the 3 months of manufacturing.
31. Minimum thickness of shear wall = 150 mm.
32. Maximum thickness of shear wall = 400 mm.
33. (UTM) Universal testing machine is used for compression test of concrete & tensile test of steel reinforcement.