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Basics to know Concrete grades,clear cover reinforcement, weight of rod

CONCRETE GRADES:
M5 = 1:4:8
M10= 1:3:6
M15= 1:2:4
M20=  1:1.5:3
M25= 1:1:2

CLEAR COVER TO MAIN REINFORCEMENT:
1.FOOTINGS : 50 mm
2.RAFT  FOUNDATION.TOP : 50 mm
3.RAFT FOUNDATION.BOTTOM/SIDES : 75 mm
4.STRAP BEAM  : 50 mm
5.GRADE SLAB : 20 mm
6.COLUMN : 40 mm
7.SHEAR WALL : 25  mm
8.BEAMS : 25 mm
9.SLABS : 15 mm
10.FLAT SLAB : 20 mm
11.STAIRCASE  : 15 mm
12.RET. WALL : 20/ 25 mm on earth
13.WATER RETAINING STRUCTURES :  20/30 mm

WEIGHT OF ROD PER METER LENGTH:

DIA WEIGHT PER METER = D*D/162

6mm = 0.222Kg
8mm = 0.395 Kg
10mm = 0.616 Kg
12mm = 0.888  Kg
16mm = 1.578 Kg
20mm = 2.466 Kg
25mm = 3.853 Kg
32mm = 6.313  Kg
40mm = 9.865 Kg
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Comments

  1. Bhushan10 May 2021 at 03:49


    This is really informative post for High Alumina Cement

    ReplyDelete
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