Proportions for 3000 lb. per sq. in. Concrete

Based on 28-day compressive strength of 6x12 in. cylinders.

Proportions are expressed by volume as follows: Portland Cement : Fine Aggregate : Coarse Aggregate.

Thus 1:2.6:4.6 indicates 1 part by volume of portland cement, 2.6 parts by volume of fine aggregate and 4.6 parts by volume of coarse aggregate.

Quantities of Materials for 1 cu. yd. of 3000 lb. per sq. in. Concrete

.

The volume of cement is expressed in barrels and of aggregates in cubic yards.
F = fine aggregate; C= coarse aggregate.

Quantities are net, no allowance being made for waste; for average conditions, the following additions are suggested: Cement, 2%; fine aggregate, 10%; coarse aggregate, 5%.

1.58 .23.84 1.55 .28 .80 1.50 .33.78 1.46 37 .73 1.46 .43 .69 1.80 .24 .80 1.78.26.76 1.73 .31 74 1.68 .35 .72 1.67 .40 .67 2.30 .20 .75 2.27 .24.74 2.21 .26.72 2.15 29.70 2.12 .35 .66 3.19 .14 .66 3.17 .14 .61 3.09.18 .64 3.04 .22.63 3.02.22.58

1.50 .22 .91 1.49 .24 .90 1.43 .25 .87 1.38 29.84 1.38 .33.82 1.73 .20.87 1.71 .23.86 1.65.24.85 1.60 .26 .81 1.60 .31 .80 2.18 16.84 2.14 .19 .82 2.06 .18 .82 2.01 .21 .77 2.01 .27 .77 3.12 .09.74 3.09 .14 .73 3.04 .14 .76 2.94 .17 .74 2.94 .17 .74

1.69.35 .77 1.65 .37 .73 1.60 .43 .69 1.54 .48 .64 1.51 .54 .58 1.91 .31 .73 1.88.36 .72 1.82 40.67 1.78 .45 .63 1.73 .51.56 2.40 .28 .71 2.36 .28 .70 2.31 .34 .65 2.26 .37 .64 2.19.42 .58 3.23.19.57 3.21 .19 .57 3.15 .23.563.00.27 .53 2.93 .30 .48

Proportions for 3500 lb. per sq. in. Concrete

Based on 28-day compressive strength of 6x12 in. cylinders.

Proportions are expressed by volume as follows: Portland Cement : Fine Aggregate : Coarse Aggregate.

Thus 1:2.6:4.6 indicates 1 part by volume of portland cement, 2.6 parts by volume of fine aggregate and 4.6 parts by volume of coarse aggregate.

Quantities of Materials for 1 cu. yd. of 3500 lb.

.

per sq.

in. Concrete The volume of cement is expressed in barrels and of aggregates in cubic yards.

F = fine aggregate; C = coarse aggregate,

Quantities are net, no allowance being made for waste; for average conditions, the following additions are suggested: Cement, 2%; fine aggregate, 10%; coarse aggregate, 5%.

2.08.31 .68 2.06.34 .67 2.01 39 .63 1.91 .42.57 1.92.51 .51 2.38

28 67 2.36.31 .66 2.52 .37 67 2.25 .40 .57 2.22 .46 .49 3.08 .23.59 3.02 .27 .63 2.96 .26 .57 2.88 .34 .56 2.83 .38.50 4.02 .12 .42 3.96 .12 .41 3.89.17 40 3.83 .17.40 3.79 .22 .34

1,12 to 1
3 4
6 " 7
8

1.67 .30 .84
1.31 28 79
2.18221
3.64 16

1.61 31 .81
1.86 30 77
2.13.25.72
3.37 16 .53

1.57 35 79 1.93 34 80 2.37.28.70 3,52 .16.52

.38

.74 .73 .68 .51

Proportions for 4000 lb. per sq. in. Concrete

Based on 28-day compressive strength of 6x12 in. cylinders.

Proportions are expressed by volume as follows: Portland Cement : Fine Aggregate : Coarse Aggregate.

Thus 1:2.6:4.6 indicates 1 part by volume of portland cement, 2.6 parts by volume of fine aggregate and 4.6 parts by volume of coarse aggregate.