UNITED STATES DEPARTMENT OF AGRICULTURE 

 BULLETIN No. 676 



Contribution from the Forest Service 

 EIENRY S. GRAVES, Forester 



FOREST PRODUCTS LABORATORY, Madison, Wisconsin 

 In Cooperation with the University of Wisconsin 



Washington, D. C. PROFESSIONAL PAPER July 16, 1919 



THE RELATION OF THE SHRINKAGE 

 AND STRENGTH PROPERTIES OF 

 WOOD TO ITS SPECIFIC GRAVITY 



By 



J. A. NEWLIN, in Charge, Section of Timber 



Mechanics, and T. R. C. WILSON, Engineer in 



Forest Products 



CONTENTS 



J Page 



Purpose / 1 



Species-Locality Averages 6 



Determination of Specific Gravity 6 



Moisture Content of Test Specimens 6 



The Equations 7 



Application of the Equations 9 



Appendix— Method of Deriving Equations ........ 10 



WASHINGTON 



GOVERNMENT PRINTING OFFICE 



1919 



