ABSTRACT
Coarse aggregate
- per cubic metre of concrete
1:3:6 1:2:4
1:1//:3
0.035 0.035 0.035
0.105 0.070 0.053
(0.140) (0.093) (0.070)
0.210 0.140 0.105
-by weight kg kg kg kg
1:3:6 1:2:4
1 :1 / :3
50 50 50
168 112
(176) (117)
(88)
315 210 158
- by volume
Mix Cement
Fineaggregate/Sand or dry
(moist)
Coarse aggregate
1:3:6 1:2:4
1 :1 / :3
0.150 0.214 0.273
0.450 0.429 0.409
(0.600) (0.572) (0.545)
0.900 0.857 0.818
- by weight kg kg kg kg
1:3:6 1:2:4
1 :1 / :3
216 308 393
720 686 654
(756) (721) (687)
1 350 1 286 1 227
C o n c r e t e w o r k (continued)
Steel bar reinforcement
Diameter Nominal weight
kg/m
Length
m/tonne
Sectional area
0.222 0.395
4 505 2 532
28.3 50.3
10 12
0.616 0.888
1 623 1 126
78.5 113.1
16 20
1.579 2.466
633 406
201.1 314.2
25 32
3.854 6.313
259 158
490.9 804.2
9.864
15.413
1 256.6
1 963.5
Steel fabric reinforcement
BS 4483 reference
Nominal weight
Mesh dimensions Main Cross
Wire diameters Main Cross
A 393 A 252 A 1 9 3 A 1 4 2 A 98
6.16 3.95 3.02 2.22 1.54
200 200 200 200 200
200 200 200 200 200
10 8 7 6 5
10 8 7 6 5
B 1131 B 785 B 503 B 385 B 283 B 196
10.90 8.14 5.93 4.53 3.73 3.05
100 100 100 100 100 100
200 200 200 200 200 200
12 10 8 7 6 5
C 7 8 5 C 6 3 6 C 5 0 3 C 3 8 5 C 2 8 3
6.72 5.55 4.34 3.41 2.61
100 80-130
100 100 100
400 400 400 400 400
10 8-10
8 7 6
D 9 8 D 4 9
1.54 0.77
200 100
200 100
5 2.5
5 2.5
mm
mm mm mm mm
C o n c r e t e w o r k (continued)
Striking t imes for formwork
Minimum time in days between placing concrete and striking formwork-days when frost occurs should be added.
