ASCE 1193: The Water-Works and Sewerage of Monterrey, N. L., Mexico / The 4th article from the June, 1911, Volume LXXII, Transactions of the American Society of Civil Engineers. Paper No. 1193, Feb. 1, 1911.

by G. R. G. Conway

38 Cm. (15 in.)

Employees.	Rate for 10 hour day. Pesos.	Total No. men.	Total cost of labor. Pesos.	No. of pipes laid..	Cost per linear meter. Pesos.
Foreman	4.50	1	4.50	...	...
Caulkers	3.00	4	12.00	...	...
Lead pourers	2.00	2	4.00	...	...
Lead melter	1.50	1	1.50	45	0.196
Pipe cutter	2.00	1	2.00	...	...
Peons	1.00	8	8.00	...	...
Water boy	0.50	1	0.50	...	...
		——	———
	...	18	32.50	...	...

30.5 Cm. (12 in.)

Employees.	Rate for 10 hour day. Pesos.	Total No. men.	Total cost of labor. Pesos.	No. of pipes laid..	Cost per linear meter. Pesos.
Foreman	4.50	1	4.50	...	...
Caulkers	3.00	4	12.00	...	...
Lead pourers	2.00	2	4.00	...	...
Lead melter	1.50	1	1.50	60	0.147
Pipe cutter	2.00	1	2.00	...	...
Peons	1.00	8	8.00	...	...
Water boy	0.50	1	0.50	...	...
		——	———
	...	18	32.50	...	...

15 Cm. (6 in.)

Employees.	Rate for 10 hour day. Pesos.	Total No. men.	Total cost of labor. Pesos.	No. of pipes laid..	Cost per linear meter. Pesos.
Foreman	4.50	1	4.50	...	...
Caulkers	3.00	4	12.00	...	...
Lead pourers	2.00	2	4.00	...	...
Lead melter	1.50	1	1.50	100	0.082
Pipe cutter	2.00	1	2.00	...	...
Peons	1.00	6	6.00	...	...
Water boy	0.50	1	0.50	...	...
		——	———
	...	16	30.50	...	...

10 Cm. (4 in.)

Employees.	Rate for 10 hour day. Pesos.	Total No. men.	Total cost of labor. Pesos.	No. of pipes laid..	Cost per linear meter. Pesos.
Foreman	4.50	1	4.50	...	...
Caulkers	3.00	4	12.00	...	...
Lead pourers	2.00	2	4.00	...	...
Lead melter	1.50	1	1.50	150	0.0574
Pipe cutter	2.00	1	2.00	...	...
Peons	1.00	6	6.00	...	...
Water boy	0.50	1	0.50	...	...
		——	———
		16	30.50	...	...

TABLE 11.—Cast-Iron Water Pipes.—Cost of Materials and Laying at Monterrey.

Materials per Standard Length of Pipe.
Key: cm = centimeter in = inch mm = millimeter kg = kilogram m = linear meter

Pipe Diameter		Thickness	Weight of Pipe	Cost/piece fob Monterrey	Lead		Oakum	Charcoal	Total Material Cost per m
cm	in	mm	kg	pesos	Weight kg	Cost pesos	Cost pesos	Cost pesos	pesos
10	4	10.3	109	11.65	2.0	0.37	0.025	0.0525	3.30
15	6	11.1	163	15.74	3.7	0.67	0.0675	0.065	4.51
30.5	12	15.8	463	76.50	7.9	1.44	0.1225	0.1	21.35
38	15	17.4	680	79.36	10.6	1.94	0.175	0.12	22.30
45.7	18	19.0	871	90.28	13.4	2.42	0.2375	0.1375	25.42
61	24	22.2	1,261	117.60	18.8	3.42	0.335	0.175	33.20
76	30	25.4	1,946	199.05	24.5	4.42	0.44	0.2125	55.77

Labor.
Key: cm = centimeter, in = inch, m = meter

Diameter of pipe:		Width of trench	Depth	Cubic meters per linear meter	Cost of excavation per lin. m	Back-filling and removing surplus	Total cost, excavation back filling etc.	Hauling per linear meter		Cost of laying per linear meter	Total hauling and laying per linear meter	Total excavation and laying, labor, complete
cm	in	m	m		Pesos	Pesos	Pesos	Hauling	Misc.	Pesos	Pesos	Pesos
10	4	0.55	0.90	0.50	0.60	0.18	0.78	0.0275	0.005	0.06	0.0925	0.8725
15	6	0.60	1.00	0.60	0.72	0.22	0.94	0.45	0.005	0.825	0.1325	1.0725
30.5	12	0.65	1.20	0.78	0.94	0.29	1.23	0.18	0.0075	0.1475	0.335	1.565
38	15	0.70	1.30	0.91	1.10	0.34	1.44	0.2725	0.01	0.19	0.4775	1.9125
45.7	18	0.80	1.40	1.12	1.34	0.41	1.75	0.2725	0.01	0.245	0.5275	2.2775
61	24	1.00	1.50	1.50	1.80	0.55	2.35	0.825	0.08	0.41	1.315	3.665
76	30	1.10	1.60	1.76	2.11	0.65	2.76	0.83	0.10	0.53	1.46	4.22

Note.—The above costs of earthwork are based on the following rates and percentages over the whole city:

Earth, per cubic meter	0.35	pesos	50%
Soft sillar	0.75	"	20%
Hard sillar	1.50	"	20%
Rock (chiefly conglomerate)	4.00	"	10%

Summary of Table 11.