CONVERTING STACKED CORDS TO BOARD FEET 



135 



4 by 4 by 8 feet. In Upper Michigan, 4^ by 4^ by 8| feet is sometimes recjuired, 

 in order that the cord shall check out in weight. Others stipulate 45 by 4-3 by 8 

 feet. In the West, hemlock bark is usually bought and .sold by the standard cord, 

 although weight per cord (2240 pounds) is sometimes used. Tan-bark oak is sold 

 by weight.' 



Bark forms the largest per cent of total volume in young, small and rapidly 

 growing trees, exposed to light and growing on dry exposed sites. It gives the 

 smallest per cent of total volume on old^ large trees, grown in dense stands, and 

 on slow growing or suppressed trees. 



Measurement of bark 

 following species, show: 



per cent of total volume of tree with bark, for the 



The manufacturers of pulp, excelsior and products requiring peeled wood, 

 when forced to purchase their raw material with bark on, soon determine the 

 reduction factor required for their species and locality. The large and variable 

 per cent of bark on loblolly pine in the South forces the purchaser of pulpwood 

 stock to insist on peeling. 



114. Factors for Converting Stacked Cords to Board Feet. WTiere the output 

 of wood in a given region, or for a given tract or ownership is in the form of both 

 cordwood and sawlogs, it is often desirable to reduce cordwood to terms of its 

 equivalent in board feet, in order to express the total production in terms of a 

 single standard. Less often, this conversion is desired as the basis of sale or 

 contracts for logging. It is not the purpose of such conversion to determine the 

 actual quantity of lumber which can be sawed from sticks of cordwood sizes and 

 shapes. 



» The standard cord in Oregon is 2300 pounds. The standard cord in California 

 is 2400 pounds. 



