1.25 bbls. of cement, at $1$1.25
1.5 cu. yds. stone, at $0.600.90
——
Total$2.15

The actual cost of mixing the concrete and delivering it to the cars was as follows:

Item.Per cu. yd.
1 foreman, at 20 cts per hour$0.0300
3 men shoveling stone, at 15 cts. per hour0.0675
3 men filling hopper, at 15 cts. per hour0.0675
1 man bringing cement, at 18 cts. per hour0.0225
1 man dumping cement, at 15 cts. per hour0.0225
9 h.p., at ½ ct. per h.p. hour0.0450
Superintendence, repairs, etc.0.0270
———
Total$0.2820

The cost of hauling the concrete from mixer to forms ran about 2.7 cts. per cubic yard, so that we have a cost for concrete in place of:

Concrete materials, per cu. yd.$2.150
Mixing concrete, per cu. yd.0.281
Hauling concrete, per cu. yd.0.027
———
Total cost, per cu. yd.$2.458

The cost, then, per column or girder molded, assuming that it was necessary to erect a full form, was about as follows:

Columns:
2 cu. yds. concrete, at $2.46$ 4.92
675 lbs. steel, at 2½ cts.16.77
Erecting steel, at 0.22 ct. per lb.1.50
Erecting forms1.63
———
Total$24.82
Girders:
5 cu. yds. concrete, at $2.46$12.30
2,260 lbs. steel, at 2½ cts.56.50
Erecting steel, at 0.08 ct. per lb.1.80
Erecting forms4.77
——
Total$75.37

Fig. 243.—View Showing Method of Hoisting Molded Columns.