CONVERTING FACTORS STICKS OF DIFFERENT - LENGTHS 129 



percentages increase more rapidly than for conifers; while for crooked and knotty 

 sticks the differences caused by length are excessive, when added to those caused 

 by diameter. 



TABLE XX 

 Standard Converting Factors for Cordwood 



109. Converting Factors for Sticks of Different Diameters. The 



figures in table XXIV indicate the influence of diameter of stick upon 

 sohd contents of stacked cords, for various species. The differences in 

 contents for Species is due entirely to differences in form and smooth- 

 ness of sticks. 



Second-growth white pine and Norway or red pine give results approximating 

 white birch. Old growth, knotty twisted grain and limby northern hardwoods 

 give 60 cubic feet per cord, as against 90 cubic feet for tall slender straight clear 

 second-growth. A cord of average hardwoods does not contain more than 70 

 cubic feet. A cord of second-growth hickory spoke bolts contains 95 cubic feet. 

 Chestnut acid wood on the Pisgah National Forest, N. C, is scaled as 110 cubic 

 feet of wood per cord of 160 stacked cubic feet, or 87 cubic feet per standard 

 cord. In California, a cord of red and white fir, averaging 60 sticks, contains 81 

 cubic feet. Western juniper in Arizona averages 62 cubic feet of sohd wood 

 per cord. 



