192 BULLETIN Wl) U. S. DEPARTMENT OF AGRICULTURE. 
The following is the cost of several pile-bent trestles built in log- 
ging camps of the region during the past few years : 
Case 1. — The labor cost of a pile-bent trestle 1.800 feet long and 
averaging 5 feet in height amounted to $900, or $0.50 per linear foot. 
The bents consisted of three piles ; the caps and stringers were hewn 
hemlock timber. 
Case 2. — The cost of building a three-pile-bent trestle 160 feet in 
length and averaging about 20 feet in height amounted to $464, or 
$2.90 per linear foot, the cost being made up as follows : 
Excavating $106 
Labor, including surveying to the amount of $40.75 265 
Rent of machinery 60 
Finishing (including laying of steel) 33 
Total 464 
This amount includes the cost of yarding the material to the site. 
It does not include the cost of timber or iron used. The caps and 
stringers were made of hewn timbers. 
Case 3. — The cost of building a pile-bent trestle 1,200 feet in 
length and averaging about 10 feet in height amounted to $5,428.31, 
or $4.52 per linear foot, the cost being made up as follows : 
Stringers, caps, and iron $1, 450. 81 
490 piles (25 feet in length) at 7 cents per foot 857. 50 
Towing piling 70. 00 
Lumber, 14,000 feet, at $8 per thousand 112.00 
Labor 2, 938. 00 
Total 5, 428. 31 
Case 4- — The cost of a pile-bent trestle 135 feet in length and 
averaging about 28 feet in height was $5.20 per linear foot. This 
includes the cost of yarding the material to the site and building the 
trestle, also a rental of $5 per day on the equipment. It does not in- 
clude the value of the timber, sawed or otherwise. 
The bents consisted of four piles, the trestle being 47 feet at the 
highest point. Hemlock piling, hewn hemlock caps, and sawed 
bracings were used. There were three sets of bracing, made of 3 
by 8 inch and 3 by 10 inch material. 
Case >5. — The cost of building a pile-bent trestle 160 feet in length 
and averaging about 20 feet in height was $2.50 per linear foot. This 
includes the cost of yarding the material to the site and building the 
trestle, also a rental of $5 per day on the equipment. The bents 
consist of three piles, the highest point on the trestle from the ground 
being 20 feet. Rough hemlock timber was used for piling, caps, and 
stringers. 
Case 6. — The cost of a pile-bent trestle 160 feet in length and hav- 
ing an average height of 8 feet was $2.40 per linear foot. This 
