FACTORS AND TABLES OF EQUIVALENTS USED IN FORESTRY i. 
TABLE 11.—Weight of various units of volume of water, with approximate values 
Weight of various units of volume in— 
Unit of volume 
Grains Ounces Pounds Grams Kilograms 
1 cubic centimeter________________________- 15. 4324 0. 0385274 0. 002205 1 0. 001 
(1514) (140) 
He cbieune hs — a a eee a a 252. 893 0. 578040 0. 036128 16. 3872 0. 016387 
(250) (35) (40) (16) (460) 
Heroin ON Ua ch) as ae eee TS TOE Se ae 16. 6909 ME O4 STS: | 1, Sea eee ee 0. 473179 
Ao © (1) (% 
eqtrant: (quid) ese eee eke Bo EE ee 33. 3818 2EOSOS0M| ae eee 0. 946359 
(33) (2) (1) 
TH VU Se ne aaa at 2 Rohe pia nals Se SA iit ENR |. ce 2 ea 35. 2749 2. 20468 11, 000 1] 
(35) (2¥%) 
TL Gap Osi Se ae feng a ee, ee 133. 527 Seado4o) | eames 3822 3. 78543 
RCUENC ORT (135) OO = (4) 
Short tons | © Metric tons 
TL CLD) OVC OO) pees ee es Las ee 0. 031214 2 1,000 62. 4283 0. 028317 28. 3170 
(42) (6212) (4s) (28) 
TL? LOBES) 0) (eer ee ee Sc erent Ee meena 0. 038845 |__-_-___.__- 77. 6893 0. 035239 35. 2393 
(41) (80) (42) 
Mpneetolitera 45-2 sos hee tee (0), OVARY Jn ee 220. 468 10.1 1100 
(16) (220) 
HE CHOC SV ALG a es ee ee ee oa eee OF 8427827 | Saas 1, 685. 56 0. 764559 764. 559 
(%) (1, 700) 
IeCuUlbicmeten=2— 225-28 2a eee ee als TOP RYE a= a eee cae 2, 204. 62 1 1, 000 
(2200) 
1 A liter is, by definition, a unit of capacity equivalent to the volume occupied by the mass of a kilogram 
of pure water atits maximum density (4°C.) and under a pressure of 760 mm. It is actually equivalent in 
volume to 1.000027 cubic decimeters. In forestry measurements, however, 1 liter is considered as weighing 
1 kilogram and having a volume of 1 cubie decimeter. 
2In forestry measurements, the weight of 1 cubic foot is taken as 1,000 ounces. The absolute value is 
998.853 ounces. 
3 Approximately 1 long ton. 
TaBLeE 12.—Raznfall per unit area; equivalent measurements 
: eas In cubic In gal- | In cubic} In short c In metric 
Unit of rainfall inches lons feet tons In liters tons 
imimeh permackOsas2 2255-5222 2225eh ee 6, 272, 640 27, 154 3, 630 113. 3 102, 788. 0 102. & 
1 millimeter per hectare-___------------ 610, 234 2, 642 353 11.0 110, 000 10 
1 millimeter per acre--------------- oy. 246, 954 1, 069 143 4.6 4, 076. 76 4.0 
19,999.73. 
TaBLE 13.—Reservoir capacity, in equivalent measurements 
Cubic Cubie Cubic 
Acre-foot '| Gallons feet yards meters 
1 | 325, 851 43, 560 1, 613. 33 1, 233. 49 
1 The volume of a prism 1 foot high with a base of 1 acre. 
