FACTORS AND TABLES OF EQUIVALENTS USED IN FORESTRY 5) 
TaBLeE 6.—Power; unit conversion factors, with approximate values 
Foot- Foot- Kilogram- : 
pounds pounds Watts | meters per E sete de Horse Kilowatt 
per minute | per second second P 
1 0. 01667 0. 0226 (Os COLOA5) 5 ee oe AN): EL 
[Yo] (M5) 
60 1 1. ae) 0. 188255 0. 00184 Ok0018 2 eae : 
44, 2537 0. 73756 14 0. 101972 0. 00136 0. 00134 0. 001 
(45) (34) (Mo) 
433. 9799 7. 23300 9. 80665 1 0. 01333 0. 01315 0. 0098 
(434) (10) 
32, 548. 6 542. 475 735. 499 WS 24 0. as 0. ee 
34 
33, 000 550 745. 7 76. 04 1. 01387 1 0. 7457 
(750) (1) (4) 
44, 253. 7 737. 56 1, 030 101. 972 1. 3596 1. 341 
(45, 000) (100) (144) (114) 
11 watt=107 ergs per second=1 joule per second. 
21 force de cheval=1 metric horsepower. 
TABLE 7.—Weight as applied to length; unit conversion factors, with approximate 
values 
Grains per | Pounds per | Pounds per Pounds per| Grams per | Grams per| Kilograms 
inch yard foot inch meter centimeter| per meter 
1 OOO STAB Cee hee Beg ape er ee 2. 551133 O02 0)/ teed ee 
(400) (24%) C4o) 
194. 444 1 0. 333 0. 027778 496. 054 4.96054 | 0.496054 
(200) [4] [146] (500 (5) (4) 
583. 333 3 1 0. 08333 1488. 16 14. 8816 1. 48816 
(600) [42] (1500) (15) dy’ 
7, 000 35 12 Pep | Newest ee Sac 178. 579 17. 8579 
(180) (18) 
0. 391983 0. 002016 0. 000672 0. 000056 a | 0. 01 0. 001 
(%) [Moo] [“Yoool WE 
39. 198 0. 201597 0. 067197 0. 005600 160 1 0.1 By 
(40) (4) (4s) (400) ih 
391. 9826 2.015911 0. 67197 0. 055998 1, 000 10 1 
(400) (2) 24) b y 
{ ' 
11 gram per meter=3.5489 pounds per mile=1 kilogram per kilometer. 
TABLE 8.—Wetght or pressure as applied to area;! unit conversion factors, with 
approximate values 
Feet of F Milli- i) 
Pounds per] Pounds per | water col- Kilograms | Grams per meters of Atmos- 1 
square foot |squareinch| umn or cal Pasa mercury pheres t 
head 2 eUer Tees ecolumunis i 
t | 0.006944 | 0.016018 ASPS |e RONABBON sues 0. 000473 i 
[Yaa] (460) (5) (14) LR 
144 4] 2.306645 703. 067 70. 3067 51. 7134 0. 068044 } 
(70) (As) | 
62. 4283 0. 433530 51 304. 801 30. 4801 22. 4193 0. 029499 
(2214) (%s) | 
0. 204817 0. 001422 0. 003281 1 (Ds sD nth em eat 0. 0000968 | 
(4) (“o0000) 
2. 04817 0.01422 0. 03281 10 iia | areata a 0. 000968 | 
(2) (Yo) ry 
2. 784578 0. 019337 0. 044604 6 13. 59545 1. 359545 71 0. 001316 1 
(234) (40) (1) 4 
2, 116. 28 14. 6964 33. 8993 10, 332. 54 1, 033. 254 760 81 ‘A 
(14%o0) ‘4 
: Pressure unit=1 barye=1dyne per square centimeter=0.0010197 gram per square centimeter =0.010197 | 
kilogram per square meter=(approximately) 0.000001 atmosphere. 1 megadyne=106 dynes per square | 
centimeter =0.98092 atmosphere. if 
2 At 4° C., or 39.2° F. a 
3 At 0° C., or 32° F. 1 inch of mercury column=70.728 pounds per square foot =1.132954 feet of water= f 
345.325 kilograms per square meter=25.40005 millimeters of mercury =0.033421 atmosphere. 4 
41 pound per square inch=0.072 ton per square foot. 
5 1 foot of water =0.882648 inch of mercury =0.30480/ meter of water. 
6 The specific gravity of mercury at 0° C. 
“1 millimeter of mercury =0.03937 inch of mercury =0.013595 meter of water. 
8 1 atmosphere= 29.9212 inches of mercury =10.332542 meters of water, 
