========================================+===============================
| FOR 1,126 PIPES 63.5 CM.
| IN DIAMETER.
Materials. +-------------+-----------------
| Quantities. | Cost.
----------------------------------------+-------------+-----------------
Portland cement, at 8.00 pesos per | |
bbl., delivered at pipe-making yard. | 401 bbl. | 3,208.00 pesos.
Sand, at 2.65 pesos per cu. m. | 85 cu. m.| 225.25 "
Crushed rock, 19-mm. (3/4-in.), at 2.65 | |
pesos per cu. m. | 62 cu. m.| 164.30 "
No. 6 galvanized-wire hoops. 4 rings | |
to each pipe. | 4,504 | 203.00 "
----------------------------------------+-------------+-----------------
Totals. | ... | 3,800.55 pesos.
----------------------------------------+-------------+-----------------
Cost per pipe. | ... | 3.37 pesos.
========================================+=============+=================
========================================+==============================
| FOR 1,095 PIPES 55.9 CM.
| IN DIAMETER.
Materials. +-------------+----------------
| Quantities. | Cost.
----------------------------------------+-------------+----------------
Portland cement, at 8.00 pesos per | |
bbl., delivered at pipe-making yard. | 303 bbl. | 2,424.00 pesos.
Sand, at 2.65 pesos per cu. m. | 68 cu. m.| 180.20 "
Crushed rock, 19-mm. (3/4-in.), at 2.65 | |
pesos per cu. m. | 50 cu. m.| 132.15 "
No. 6 galvanized-wire hoops. 4 rings | |
to each pipe. | 4,380 | 183.00 "
----------------------------------------+-------------+----------------
Totals. | ... | 2,919.45 pesos.
----------------------------------------+-------------+----------------
Cost per pipe. | ... | 2.66 pesos.
========================================+=============+================
From Table 5 it is seen that the cost of the 63.5-cm. pipes was 3.37
pesos for material plus 0.46 peso for labor = 3.83 pesos per pipe, or
6.26 pesos per lin. m. (1.91 pesos per lin. ft.).
The cost of the 55.9-cm. pipes amounted to 2.66 pesos for material plus
0.42 peso for labor = 3.08 pesos per pipe, or 5.05 pesos per lin. m.
(1.54 pesos per lin. ft.).
The cost of cement included hauling from the bodega to the yard, a
distance of about 5 km. At a later date, after the Company had commenced
using the "Hidalgo" cement, some additional 55.9-cm. pipes were
manufactured, so as to have them on hand as a reserve in case of
emergency. In this work only Mexican labor was used, as the previous
gang had been dispersed, but the tampers had previous experience. Taking
the cost of 418 pipes made during one period of 9 days, the detailed
cost was as given in Table 6.