His plan for Markley Farm provides for one lift of 305 feet, with three compound pumping engines of 100 million capacity, subsiding and storage reservoirs, and one effluent-main 62 inches in diameter.
The estimate is condensed as follows:
| Aqua-fort and buildings | $410,000.00 | ||
| Engines and boilers for 100 million capacity | 1,255,000.00 | ||
| Three subsiding reservoirs of earth and masonry embankments, with 90 acres of water surface | } | 1,836,500.00 | |
| Effluent-main, including 55,000 feet of 62-inch pipe, from the Farm to Eden Reservoir, and 18,000 feet of 48-inch, from Eden Reservoir to Harrison Avenue | } | 1,804,000.00 | |
| Contingencies | 460,000.00 | ||
| ————— | |||
| Total | $5,725,000.00 |
The important question is presented by him, which the public must decide, namely, whether it is a prudent policy to expend four millions of dollars to improve the old works, and retain all the expensive and unreliable machinery, and still supply an impure and turbid water; or to expend an additional two millions for an entire new system, from a source where a supply of pure and clear water can be secured, commensurate with the growing city.
He also embodies, by way of comparison, the following estimate for locating the works on the Kentucky side of the river:
| For right of way and property, State and municipal | 500,000 |
| Aqua-fort and buildings | 410,000 |
| Three engines, with boilers complete | 1,255,000 |
| Subsiding Reservoirs | 1,836,000 |
| Effluent-mains, 23,000 feet | 533,000 |
| Tunnel for pumping main | 270,000 |
| Tunnel under the Ohio River, 3,000 feet | 825,000 |
| Thirty-inch main to Eastern Avenue, 22,500 feet | 201,000 |
| Contingencies | 550,000 |
| ———— | |
| Total for Newport plan | $6,381,000 |
CHAPTER VII.
COST OF CONSTRUCTING WATER-WORKS.
The cost of constructing water-works varies very much, according to local features, geological structure, and kind of scheme most suitable to the place. In Great Britain, gravitation schemes cost from $10 to $13, and pumping schemes from $7 to $10, per inhabitant. The average cost per head, for London, was $20; for Liverpool, $20; for Bradford, England, $35; for Halifax, England, $25; for Dundee, Scotland, $30; for Glasgow, $15; for Manchester and Sheffield (each) $12 per head.
The average cost for a supply of 20 imperial gallons per day, per head, for 66 towns of Great Britain having gravitation supplies, was $8; for 48 towns, with pumping system, $5.80; and for 11 towns, having both systems, $7. From the annual report of Chicago, for 1880, we take the following cost, per capita, for water-works construction: Detroit, $23.11; Newark, N. J., $19.08; Wilmington, Del., $20.73; Buffalo, $18.29; Cincinnati, $26.20; Milwaukee, $19.25; Columbus, O., $18.14; Louisville, Ky., $25.04; Cleveland, O., $16.84; Providence, R. I., $52.74; Boston (gravity supply), $44.46; Manchester, N. H. (water pumping power), $24.24; Hartford, Conn. (gravity), $35.60; New York (gravity), $34.38, St. Louis, $26.07; Chicago, $17.49.
The Engineering News, of New York, Vol. IX, No. 4, contains valuable tables on construction, and other valuable water-works statistics, from which the following is compiled: