Mixer Machine Capacity:
| | | | | |
Sr. No:
|
Capacity
|
Dry volume in cum
|
Wet volume in cum
|
Output per hour
|
Petrol consumption per hour in litre
|
Remarks
| |
|
1
|
6' / '4'
|
0.170
|
0.113
|
2.266
|
1.000
|
Each batch of concrete requires about 3 minutes of mixing
| |
2
|
7' / '5'
|
0.198
|
0.142
|
2.832
|
1.400
| |
3
|
10' / '7'
|
0.283
|
0.198
|
3.965
|
1.700
| |
Cement Mortar:
| | | | | | |
Sr. No:
|
Ratio
|
Cement in Kg
|
Cement in bag
|
Sand in 'cum'.
|
Remarks
| |
|
1
|
1 : 1'
|
1054
|
21.08
|
0.73
|
Water may be generally taken as 140 litres per 'cum'.
|
50 kg. cement bag size is (400mm x 350mm x 250mm internally. Volume per is = 0.035 'cum'.
| |
2
|
1 : 2'
|
686
|
13.72
|
0.96
| |
3
|
1 : 3'
|
491
|
9.82
|
1.02
| |
1
|
1 : 4'
|
380
|
7.60
|
1.05
| |
5
|
1 : 6'
|
253
|
5.06
|
1.05
| |
6
|
1 : 8'
|
192
|
3.84
|
1.06
| |
| | | | | | | |
Cement Concrete:
| | | | | | |
Sr. No:
|
Ratio
|
Cement in Kg
|
Cement in bag
|
Sand in 'cum'.
|
Aggregate in 'cum'.
|
Remarks
| |
|
1
|
1 : 4 : 8' Nominal Mix
|
161
|
3.22
|
0.45
|
0.89
| | |
2
|
1 : 3 : 6' Nominal Mix
|
212
|
4.24
|
0.44
|
0.88
| | |
3
|
1 : 2 : 4' M15
|
317
|
6.34
|
0.44
|
0.88
| | |
4
|
1 : 1.5 : 3' M20
|
403
|
8.06
|
0.42
|
0.84
| | |
5
|
1 : 1 : 2' M25
|
555
|
11.10
|
0.385
|
0.77
| | |
| | | | | | | |
Remarks
| | | | | | | |
Considering dry density of concrete is 1.54 'cum'.
| | | | |
Aggregate may be used 60% : 40% ratio of 20mm and 10mm down respectively.
| | |
Water required for concrete varies from 28 to 35 litres per bag of (50kg) cement depending on the mix and proportion.
| |
| | | | | | | |
| | | | | | | |
Reinforcement (Steel) works:
| | | | | |
Reinforcement usually required in various situation is as follows:
| | | |
Culvert and foundaion = 0.5% to 1%
| | | | | |
Slab and landing = 0.5% to 1.5%
| | | | | |
Arch, wal, floor and flate roof = 1% to 2%
| | | | |
Column and brace = 2 % to 3%
| | | | | |
Column and brace = 2 % to 3%
| | | | | |
Pile = 2% to 5%
| | | | | | |
Remarks
| | | | | | | |
Binding or tying wire for reinforcement may be taken as 0.9 to 1.3 kg per quintal of reinforcement.
| |
| | | | | | | |
| | | | | | | |
One 50 kg. bag of cement will make approximately following volume of concrete:
| | |
The equivalent size of a box for 50 kg. cement bag is 400mmx350mmx250mm internally.
| | |
0.133 'cum' of 1 : 1.5 : 3 concrete.
| | | | | |
0.166 'cum' of 1 : 2 : 4 concrete.
| | | | | |
0.140 'cum' of 1: 1 : 2 concrete.
| | | | | |
0.250 'cum' of 1: 3 : 6 concrete.
| | | | | |
0.333 'cum' of 1: 4 : 8 concrete.
| | | | | |
0.400 'cum' of 1: 5 : 10 concrete.
| | | | | |
0.500 'cum' of 1: 6 : 12concrete.
| | | | | |
