TESTS OF WESTERN YELLOW PINE CAR SILLS, ETC. 



13 





















MODULUS of RUPTURE 



LBS. per SO. IN. 



137 TESTS 



CRUSHING STRENGTH 



at MAX. LOAD 



LBS. per 5Q.IN. 



COMPJ' TO GRAIN 



140 TESTS 



MOOUUJS of ELASTICITY 



IOOO LBS. per SQ.IN. 



137 TESTS 















J i9 















/75 















?7 



















16 





























































,^ 



-§ 













**S3 



< *38 















41 





































21 



^^40 



55 



14 



5 















8 

































i.'i 



20 22 24 26 28 30 32 34 

 DRY WEIGHT- LBS. per CU. FT. 

 Fig. 3. — Relation of strength values to dry weight in small, clear sticks of green western 



yellow pine. 



