16 



MISC. PUBLICATION 225, U. S. DEPT. OF AGRICULTURE 



Table 27. — The International log rule 

 [Saw kerf \i inch] i 



Diameter (inches) 



Volume in board feet of logs of indicated length in feet 



5 



10 



10 



15 



20 



30 



35 



45 



55 



65 



75 



85 



95 



110 



125 



135 



155 



170 



185 



205 



220 



240 



260 



280 



305 



325 



350 



375 



400 



425 



450 



475 



505 



535 



565 



595 



625 



655 



690 



725 



755 



795 



830 



865 



905 



940 



980 



1020 



1060 



1100 



1145 



1190 



1230 



1275 



1320 



1370 



5 



5 



10 



15 



20 



30 



35 



45 



55 



70 



80 



95 



110 



125 



140 



155 



175 



195 



215 



235 



255 



280 



305 



330 



355 



385 



410 



440 



470 



500 



535 



565 



600 



635 



670 



710 



750 



785 



825 



870 



910 



955 



995 



1040 



1090 



1135 



1185 



1235 



1285 



1335 



1385 



1440 



1495 



1550 



1605 



1660 



1720 



5 



10 



15 



20 



25 



35 



45 



55 



70 



85 



100 



115 



130 



150 



170 



190 



210 



235 



260 



285 



310 



340 



370 



400 



430 



465 



495 



530 



570 



605 



645 



685 



725 



770 



810 



855 



900 



950 



995 



1045 



1095 



1150 



1200 



1255 



1310 



1370 



1425 



1485 



1545 



1605 



1670 



1735 



1800 



1865 



1930 



2000 



2070 



5 



10 



15 



25 



35 



45 



55 



70 



85 



100 



115 



135 



155 



180 



200 



225 



250 



280 



305 



335 



370 



400 



435 



470 



510 



545 



585 



625 



670 



715 



760 



805 



855 



905 



955- 



1005 



1060 



1115 



1170 



1230 



1290 



1350 



1410 



1475 



1540 



1605 



1675 



1745 



1815 



1885 



1960 



2035 



2110 



2185 



2265 



2345 



2425 



5 



10 



20 



30 



40 



50 



65 



80 



95 



115 



135 



160 



180 



205 



230 



260 



290 



320 



355 



390 



425 



460 



500 



540 



585 



630 



675 



720 



770 



820 



875 



925 



980 



1040 



1095 



1155 



1220 



1280 



1345 



1410 



1480 



1550 



1620 



1695 



1770 



1845 



1920 



2000 



2080 



2165 



2245 



2330 



2420 



2510 



2600 



2690 



2785 



Diame- 

 ter, 

 inches 



5 



15 



25 



35 



45 



60 



75 



95 



110 



135 



155 



180 



205 



235 



265 



300 



330 



365 



405 



445 



485 



525 



570 



615 



665 



715 



765 



820 



875 



930 



990 



1050 



1115 



1175 



1245 



1310 



1380 



1450 



1525 



1600 



1675 



1755 



1835 



1915 



2000 



2085 



2175 



2265 



2355 



2445 



2540 



2640 



2735 



2835 



2935 



3040 



3145 



10 



15 



25 



40 



50 



70 



85 



105 



125 



150 



175 



205 



235 



265 



300 



335 



370 



410 



455 



495 



545 



590 



640 



690 



745 



800 



860 



915 



980 



1045 



1110 



1175 



1245 



1315 



1390 



1465 



1540 



1620 



1705 



1785 



1870 



1960 



2050 



2140 



2235 



2330 



2425 



2525 



2625 



2730 



2835 



2945 



3050 



3165 



3275 



3390 



3510 



4 

 5 

 6 

 7 

 8 

 9 

 10 

 11 

 12 

 13 

 14 

 15 

 16 

 17 

 18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 

 44 

 45 

 46 

 47 

 48 

 49 

 50 

 51 

 52 

 53 

 54 

 55 

 56 

 57 

 58 

 59 

 60 



1 Scale for seasoned lumber with M 6-inch shrinkage per 1-inch board, and saws cutting a J4-inch kerf, 

 or for green lumber, for saws cutting a ?i6-inch kerf. For saws cutting a li-inch kerf add 10.5 percent. 

 Formula: ((Z>2X0.22)-0.71D)X0.904762 for 4-foot sections. 

 Taper allowance: Yz inch per 4 feet lineal. 



Note. — The International log rule gives consistent results under good milling practice. It is the most 

 fair rule for all classes of timber and logs and should be used for second-growth material particularly. For 

 this reason the International volume tables are recommended. 



