LUMBERING IN PINE REGION OF CALIFORNIA. 
Table 7. — Cost of standard-gauge frame trestles. 
53 
Length. 
Maximum 
height. 
Feet, 
board 
measure. 
Total 
cost. 
Cost 
per 1,000. 
Cost 
per 
linear 
foot. 
Feet. 
Feet. 
620 
52 
105.000 
$2,800 
$26. 66 
$4.52 
652 
28 
60,000 
1,565 
26.08 
2.40 
762 
8 
68,000 
1,704 
25.06 
2.23 
202 
32 
28,000 
743 
26.54 
3.68 
140 
34 
19,000 
487 
25. 63 
3.34 
238 
31 
31,000 
724 
23.35 
3.04 
272 
41 
45,000 
1,030 
22.89 
3.77 
144 
54 
30,000 
713 
23.76 
4.95 
It thus appears that the cost of constructing sawed-timber trestles 
in this region varies from $23 to $27 per 1,000 feet board measure; 
depending upon the difficulties of construction, particularly the 
amount of work necessary in excavating foundations. A good av- 
erage figure for trestle construction is $25 per 1,000. The cost per 
linear foot may be roughly calculated as from $2.25 to $2.75 for 
trestles with a maximum height of from 10 to 25 feet, from $2.75 to 
$3.50 for a maximum height of from 25 to 35 feet, from $3.50 to $4.50 
for a maximum height of from 25 to 50 feet, and from $4.50 to $5 for 
a maximum height of from 50 to 55 feet. 
Most of the ties used on logging railroads are sawed at the mill 
and hauled back to the woods. The material is usually white fir or 
defective cedar. Split cedar and hewed white fir are used in some 
instances. The usual size on standard-gauge roads is 7 by 8 inches 
by 8 feet. Some roads use with equal success ties 6 by 8 inches by 
8 feet. The first size contains 37J feet board measure, and the 
second 32 feet. The usual narrow-gauge tie is 6 by 8 inches by 6 
feet. Sometimes, in order to cut three ties from a 16-foot timber, 
the length is made 5 J feet. The contents of a sawed narrow-gauge 
tie is 24 feet board measure. 
The number of ties per mile varies with the size of the rail, the 
weight of the locomotive, and the efficiency of the roadbed. Upon 
permanent main-line logging roads the usual number is 16 per rail, or 
2,816 per mile. Most main-line roads and spurs have 17 per rail, or 
2,992 per mile. Some spurs have 18 per rail, or 3,168 per mile. The 
volume in feet board measure of 2,992 sawed ties per mile is 111,600 
for the larger standard-gauge ties, 95,700 for the smaller standard- 
gauge size, and 71,800 for narrow-gauge ties. At $12 per 1,000 the 
cost per mile is, respectively, $1,339.20 for the first, $1,148.40 for the 
second, and $861.60 for the third. Where suitable young timber is 
available, hewed standard-gauge ties can sometimes be delivered at 
the track for from 20 to 25 cents each. At 20 cents each, the cost is 
approximately $600 per mile. 
