FACTORS AND TABLES OF EQUIVALENTS USED IN FORESTRY 7 

 Table 11. — Weight of various units of volume of water, with approximate values 



Unit of volume 



AVeight of various units of volume in— 



Grains 



Ounces 



Pounds 



Grams 



Kilograms 





15. 4324 



(151/) 



252. 893 



(250) 



0. 035274 



(Ho) 



0. 578040 



(%) 



16. 6909 



33. 3818 

 (33) 



35. 2749 

 (35) 



133. 527 

 (135) 



2 1, 000 



0. 002205 



0, 036128 



(Ho) 

 1. 04318 



(1) 

 2. 08636 



(2) 

 2. 20468 



(2/5) 



8. 34545 

 (8) 



62. 4283 



(62/2) 



77. 6893 



(80) 



220. 468 



(220) 



1, 685. 56 

 (1, 700) 



2, 204. 62 

 (2200) 



1 



16. 3872 

 (16) 



001 



1 cubic inch .. __ .. 



0. 016387 



1 pint (liquid) .____. . ......_ 



(Ho) 



0. 473179 









(H) 



946359 



1 liter 





i 1,000 



(1) 

 11 







3. 78545 









(4) 





Short tons 



Metric tons 





0.031214 



(1/32) 



0. 038845 



(Hi) 



0. 110234 

 (H) 



0. 842782 

 (%) 



3 1. 10232 



0. 028317 



(H&) 



0. 035239 



0/28) 



10.1 



0. 764559 



1 



28. 3170 





(28) 

 35. 2393 







i 100 







764. 559 







1,000 









i A liter is, by definition, a unit of capacity equivalent to the volume occupied by the mass of a kilogram 

 of pure water at its 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 cubic decimeter. 



2 In 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. 



Table 12. — Rainfall per unit area; equivalent measurements 



Unit of rainfall 



In cubic 

 inches 



In gal 

 Ions 



In cubic 

 feet 



In short 

 tons 



In liters 



In metric 

 tons 



1 inch per acre 



1 millimeter per hectare 

 1 millimeter per acre. - - 



6, 272, 640 

 610, 234 

 246, 954 



27, 154 

 2,642 

 1,069 



3,630 

 353 

 143 



113.3 

 11.0 

 4.5 



102, 788. 

 1 10, 000 

 4, 076. 16 



102.8 



10 



4.0 



9,999.73. 



Table 13. — Reservoir capacity, in equivalent measurements 



Acre-foot ' 



Gallons 



Cubic 



feet 



Cubic 

 yards 



Cubic 

 meters 



1 



325, 857 



43, 560 



1, 613. 33 



1, 233. 49 



The volume of a priim 1 foot high with a base of 1 acre. 



