LOGGING IN THE DOUGLAS FIR REGION. 
89 
Table 13. — Special ploiv steel hoisting rope. 
[6 strands, 19 wires to the strand, 1 hemp core.] 
Net price 
Diameter 
Approxi- 
mate 
weight 
per foot in 
pounds. 
Approxi- 
mate 
strength 
Proper 
working 
load in 
per foot. 
in inches. 
in tons of 
2,000 
pounds. 
tons of 
2,000 
pounds. 
$0,065 
1 
0.10 
3.15 
0.63 
.065 
A 
.15 
4.50 
.9 
.0725 
.22 
6.75 
1.35 
.0775 
A 
.30 
9.4 
1.9 
.085 
1 
.39 
12.1 
2.4 
.095 
A 
.50 
14.5 
2.9 
.1125 
I 
.62 
19 
3.8 
. 155 
3 
.89 
26.3 
5.3 
.195 
I 
1.20 
35 
7 
.25 
1.58 
45 
9 
.31 
i| 
2 
56 
11 
.375 
ii 
it 
2.45 
69 
14 
.45 
3 
84 
17 
.55 
ii 
3.55 
98 
20 
.65 
?! 
4.15 
110 
22 
.80 
4.85 
133 
27 
.875 
ii 
5.55 
150 
30 
.925 
2 
6.30 
166 
33 
Note.— The net prices given are based on a discount of 50 per cent off the list prices. Add 10 per cent 
to thb list prices for wire center. 
Table 14. — Extra pliable plow steel hoisting rope. 
[8 strands, 19 wires to the strand, 1 hemp core.] 
Approxi- 
mate 
weight 
per foot in 
pounds. 
Approxi- 
mate 
Proper 
working 
Net price 
Diameter 
strength 
load in 
per foot. 
in inches. 
in tons of 
2,000 
pounds. 
tons of 
2.000 
pounds. 
$0. 06625 
i 
0.09 
2.25 
0.45 
.0675 
A 
.13 
3.35 
.67 
.07 
1 
.20 
5.12 
1.02 
.075 
& 
.27 
6.90 
1.38 
.08 
i 
.35 
8.70 
1.74 
.09 
A 
.45 
11.60 
2.32 
.105 
f 
.56 
14 
2.8 
.145 
3 
.80 
20 
4 
.19 
I 
1.08 
26 
5.2 
.24 
1 
1.42 
33 
6.6 
.30 
1| 
1.80 
43 
8.6 
.36 
li 
2.20 
52 
10.4 
.435 
if 
2.70 
64 
12.8 
.515 
11 
3.19 
74 
14.8 
Note. — The net prices given are based on a discount of 50 per cent off the list prices. 
Table 15 indicates the fixed investment in ground yarding lines. 
To take care of different conditions, the total cost and weight is 
given for 24 cases, which include lines of different lengths, diameters, 
and grades. 
