Tips for Civil Engineers to Remember

Useful Information:

1: RCC ( Reinforced Cement Concrete

• M15   1: 2: 4         For 1 Cubic meter   = 5.9 No’s of Cement Bags
• M20    1: 1.5 :3     For 1 Cubic meter   = 6.9 No’s of Cement Bags
• M25    1:1:2          For 1 Cubic meter   = 8.5 No’s of Cement Bags
• M30    1:1:1          For 1 Cubic meter   = 9.2 No’s of Cement Bags
• M30    1:1:1          For 1 Cubic meter   = 10.2 No’s of Cement Bags

2 Quantity of Formwork for Given structures with formulas

•  Quantity of Formwork for Beam
•  Quantity of Formwork for Rectangular coumn
•  Quantity of Formwork for Circular column

Quantity of formwork for Beam

Formula = ( b + 2d ) x l = sq.meter     Here   b is breadth of column and d is depth of column

Quantity of formwork for Rectangular Column

Formula = 2 ( l + b ) x h = sq.meter               Here H is Height of Column

Quantity of formwork for Circular column:

Formula = Pi x d x h = sq.meter

How to Calculate quantity of steel for Slab

Example: We have to find the steel quantity for the room , Which size is 5 m x 4 m .

#solution

given,

Size of Room = 5 x 3 meters

Main bars diameter = d = 12 mm

Distribution bars diameter  = d =10 mm

Now,

Spacing of Main bars = c/c = 15 cm  c/c

Formula to find the No’s of  ( M.B ) Main bars = 500 / 15 + 1= 34.33 say 35

Straight bar  = 18

Bent up bars = 17

2) Spacing of  Distribution bars = c/c = 20 cm  c/c

Formula to find the No’s of ( D.B )  Distribution  bars = 400 / 20 + 1= 21 No’s