The hire of an engine and derrick is about $30.00 per week. That of an engine and concrete mixer is about the same. This does not include any men to operate the same.
The hire of a road roller, with coal and operator, is about $12.00 per day.
The hire of a work train and crew, coal, etc., is about $22.00 per day.
The cost of galvanized structural work is about $20.00 a ton.
The cost of corrugated steel roofing or siding per square of 100 square feet, at cents per pound for material and $2.25 per square for erec tion and painting, is about $11.75 for No. 18, and about $9.00 for No. 20. Galvanized roofing at 1 cent extra for galvanizing, would cost about $14.50 for No. 18, and about $11.00 for No. 20 per square erected.
The cost of concrete-steel roofing on 15-foot spans is about 25 to 30 cents per square foot, ex clusive of covering. Concrete-steel floors for ordinary loads on spans 8 to 10 feet cost about the same. Heavy floors cost 30 to 40 cents per square foot. Cement finish on floors costs 7 to 10 cents per square foot.
The cost, in 1903, of a 54-inch self supporting steel stack 110 feet high of 5/16 inch, and 3/16-inch metal, in cluding ladder, painted on outside, with base casting, but not anchor bolts or foundation, was $1,200. Breeching of 3/16-inch metal, 5 feet in diameter or oblong and same area, cost $9.00 per linear foot.
The cost in 1902 of a stack 10 feet inside diameter and 180 feet high, of porous brick, was $7,375, not including foundation. A 125-foot by 6-foot porous brick stack, including foundation, will cost about $4,000. The cost in 1903 of a re inforced concrete stack 150 feet high, 6 feet in side diameter, including foundation, was $3,800. The contract price in 1907, of a reinforced con crete stack 166 feet high, 8 feet inside diameter, was $4,100.
The cost of a 118,000-gallon concrete-steel pipe, with inclosing tower, at Hull, Mass., was about $12,000 (see "Engineering News," Vol. 52, p. 596).
Mr. H. G. Tyrrell ("Railroad Gazette," Dec. 30, 1904) shows that the costs of the parts of single-track steel trestle for E50 loading, towers 30 feet between bents, at cents per pound for girders, 4 cents per pound for bents and bracing, and $10 per cubic yard for concrete, are as fol lows: In the Proceedings of the American Railway Engineering and Maintenance of Way Associa tion (Vol. 2, p. 139), it is stated that the cost of
ballasted trestle on the A. T. & S. Fe Ry., 2 ex amples, averaged $12.66 per linear foot, divided as follows: Treated piles, $5.02; lumber, $5.01; bolts, $21.00; cross-ties, $24.00; ballast, $285.00; labor (all kinds), $1.89; creosote, $0.005.
Mr. J. C. Bland, in 1891, found the estimated contract price of single-track timber trestle was, in round numbers, nearly equal in dollars per linear foot to one-half of the height of trestle in feet out to out of cap and sill. In this the floor deck alone was $4.22 per foot of track, and piles $3.00 each, both increased by 20 per cent for the contractor's profit. Timber in place was esti mated at $52.00 to $55.00 per thousand feet B. M., contract price.
A number of examples of the cost of railroads are given in "Railroad Gazette" (Sept. 7, and Oct. 26, 1906), as follows: First Case—No tunnels, few bridges, along river, considerable cut and fill, single track, $26, 300 per mile.
Second Case—Along river, heavy cuts, some bridges, single track, $37,014 per mile.
Third Case—Cuts and fills, bridges, tunnels, single track, $60,628 per mile.
Fourth Case—Heavy crossings, double track, $76,336 per mile.
Fifth Case—Heavy crossings, double track, $105,186 per mile.
Sixth Case—Detour around large city, double track, $50,000 per mile.
In the foregoing the cost includes pre liminary surveys, clearing right of way, roadbed, ties, rails, ballast, side tracks, but does not in clude real estate, stations, equipment, or sig nals.
Following is a list, alphabetically arranged, giving prices of various materials and work, to be used as a guide in estimating the cost of struc tures. These are taken largely from current price lists and contract prices as published in en gineering journals, and in general indicate prices prevailing in 1904 to 1907.