| Item. | No. of men. | Total wages. | Cost per 100 ft. |
| Opening trench, 18×30-in. | 2 | $3.50 | $2.43 |
| Placing and tamping cinders | 2 | 3.50 | 1.00 |
| Setting forms: | |||
| Boss setter | 1 | 3.00 | ... |
| Assistant setter | 1 | 2.00 | ... |
| Laborer | 1 | 1.75 | ... |
| — | —— | —— | |
| 3 | $6.75 | $1.69 | |
| Mixing and placing concrete: | |||
| Clamp man | 1 | $1.75 | ... |
| Wheelers | 3 | 5.25 | ... |
| Mixing concrete | 4 | 7.00 | ... |
| Mixing finishing coat | 2 | 3.50 | ... |
| Tampers | 1 | 1.75 | ... |
| Finishing: | |||
| Foreman and boss finisher | 1 | 4.00 | ... |
| Assistant finisher | 1 | 3.00 | ... |
| Water boy | 1 | .50 | ... |
| — | ——— | —— | |
| Total making concrete | 14 | $26.75 | $7.64 |
| Total for labor per 100 ft | $12.76 | ||
| Materials for 100 lin. ft.: | Quantity. | Price. | |
| Portland cement | 8⅓ bbls. | $1.85 | $15.42 |
| Cinders | 7.5 yds. | .50 | 3.75 |
| Gravel | 2.5 yds. | 1.00 | 2.50 |
| Broken stone | 2.5 yds. | 1.40 | 3.50 |
| Sand | 1.0 | 1.00 | 1.00 |
| Total for material per 100 ft | $26.17 | ||
| Total for material and labor per 100 ft. | $38.93 |
This is the total cost, exclusive of lumber, tools, interest, profits, etc., and it is practically 40 cts. per lin. ft.
In 100 lin. ft. of curb and gutter there were 4.6 cu. yds. of concrete and mortar facing, 4 cu. yds. of which were concrete; hence the 9 men in the concrete gang laid 14 cu. yds. of concrete per day, whereas the 4 men mixing and placing the mortar finishing laid only 2½ cu. yds. of mortar per day, assuming that the mortar finishing averaged just 1 in. thick. Since these 4 men (2 mixers and 2 finishers) received $10.50 a day, it cost more than $4 per cu. yd. to mix and place the 1-2 mortar, as compared with $1.41 per cu. yd. for mixing and placing the concrete. The concrete was built in alternate sections 7 ft. long. The 3 men placing forms averaged 400 lin. ft. a day, so that the cost of placing the forms was $1 per cu. yd. of concrete. The 2 men placing and tamping cinders averaged 16 cu. yds. of cinders per day, or 8 cu. yds. per man. This curb and gutter was built by contract at 45 cts. per lin. ft.
For several jobs, in which a curb and gutter essentially the same as shown in Fig. 125 was built, our records show a general correspondence with the above given data of Mr. Apple. Our work was done with smaller gangs, 1 mason and 2 laborers being the ordinary gang. Such a gang would lay 80 to 100 lin. ft. of curb and gutter per 10-hr. day, at the following cost:
| 1 mason at $2.50 | $2.50 |
| 2 laborers at $1.50 | 3.00 |
| —— | |
| Total | $5.50 |
This made a cost of 5½ to 7 cts. per lin. ft. for labor, and it did not include the cost of digging a trench to receive the curb and gutter.