38 
BULLETIN" 410, L T . S. DEPARTMEXT OF AGRICULTURE. 
A chute with heavy grading and a small amount of trestlework costs 
about $1,500 or SI, ,600 per mile. A chute with one large trestle or 
three or four moderate trestles costs about $1/800 per mile. A com- 
bination of large trestles and heavy grading may make a chute cost 
from $2,000 to 82,200 per mile. The average allowance for the cost 
of chutes for good-sized logging chances should be from $1,300 to 
$1,400 per mile for good conditions; from $1,500 to $1,600 for fair 
conditions; and $1,800 for very difficult conditions. Chute landings 
cost from $50 to $100 each. 
Equipment. — The donkey engines used for chute hauling are com- 
monly larger than those used for yarding. They are of the wide- 
drummed type usually described as roaders. The size varies with the 
difficulty and length of the haul. For short downhill pulls a 10 by 12 
inch engine may be satisfactory. On the other hand, for steep uphill 
pulls or very long hauls a 12 by 14 inch or even a 14 by 14 inch 
roader may be used. 
The f . o. b. factory cost of representative roading engines is approxi- 
mately from $2,650 to $5,450. 
Table 6. — Factory cost of representative roading engines. 
Size. 
Weigbt. 
Cost. 
Inches. 
Pounds. 
12 by 14 
46,000 
$4,650 
14 by 14 
58,000 
5,450 
11 by 14 
36,300 
3, 450 
12 by 12 
36,500 
3,500 
13 by 14 
45,200 
4,350 
10 by 12 
27,000 
2,650 
11 by 13 
38,000 
3,650 
12 by 12 
40,000 
3,800 
Mam line, 
Back line, 
Size. 
lj-ineh 
f-inch 
cable. 
cable. 
Inches. 
Feet. 
Feet. 
11 by 13 
4,080 
10,600 
12 by 12 
4,070 
9,850 
12 by 14 
5,100 
13,850 
14 by 14 
8,100 
21,400 
The prices of smaller machines and the approximate cost of placing 
the engines on the ground are given under the discussion of donkey 
yarding equipment. 
The size of the cable used for chute hauling depends upon the 
severity of the haul. For light downhill pulls 1-inch or If -inch 
main line may be used. The standard size for long and uphill hauls 
is 1^-inch main line, and the usual back line is f-inch. The cost is 
given under donkey yarding equipment. The cable capacity of rep- 
resentative roaders is shown in Table 6. 
On the main line of a chute ground rollers are placed at intervals, 
and corrugated rollers, mounted on so-called dead-men, are required 
