TESTS OF WESTERN FELLOW PINE CAE SILLS, ETC. 



PIECE NUMBER-GREEN CAR SILLS 

 3 8 7 14 4 21 I O 12 13 3 24 6 19 II 20 18 16 17 25 9 2 22 23 26 15 

























































LEGEND 



O SELECT 



© MERCHANTABLE 



O COMMON 



CREEH 



AIR SEASONED 



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31 35 30 50 43 29 32 33 27 39 44 40 51 35 47 45 42 Z3 49 54 46 41 57 33 45 52 

 PIECE NUMBER -AIR 5EA50NED CAR SILLS 



Pig. 1. — Relation between modulus of rupture and other test values for green and air- 

 seasoned car sills. 



