RESULTS OF COMPRESSION TESTS ON NEW DOUGLAS FIR. Continued. 



2.78 X 4.38 X 12.0 (WOO 35.5 Straight grained and 



clear ; one old side with 

 season crack nearly 

 across piece. Crippled 

 3 ins. from one end. 



2.82 X 3.48 X 12.02 6010 35.9 Grain straight; two 



old sides ; piece sound, 

 no flawc. Crippled near 

 one end. 



3.3 X 3.H8 X 12.0 5560 34.2 Grain straight and 



clear, except small pin 

 knot on a corner 4 ins. 

 from end ; had two bad 

 season cracks the whole 

 length. Crippled 4 ins. 

 from end induced by 

 season cracks ; also 

 bulged out. 



3.38 X 3.43 X l:'..">:-: 6816 34.7 Clear ; grain bent out 



of straight at one end, 

 due to proximity of knot, 

 also somewhat shaken. 

 Failed by bursting along 

 fibres out of parallel. 



2.20 X 2.2i X 13.78 .">038 34.3 Grain out of parallel 



for 1 in. in length ; knot 

 on one corner of end. 

 Burst along shaken 

 fibres out of parallel. 



3.38 X 3.45 X 13.00 (isi;i 33. S Straght grained, ex- 



cept one-half of a knot on 

 one end. Failed by crip- 

 pling near knot at end. 



4.03 in diar. X 48.01 5856 31.3 Grain parallel, no 



knots ; two small cracks 

 and a small split ; 

 annular rings nearly 

 straight. Failed b y 

 bending concave to a 

 high comer. 



2.84^ X 4.23 X 13.12 5828 31.5 Straight grained. 



small pin knot 3 ins. 

 from one end ; season 

 cracks from end to end 

 through middle, passing 

 through knot. Failure 

 by opening of season 

 cracks, and crippling 

 through knot. 



4.10 X 4.45 X 14.47 7188 39.1 Clear; grain out of 



parallel. Failed by crip- 

 pling and shearg in of 

 unsupported fibre?. 



2.70 X 2.90 X 15.96 8365 39.5 Clear, straight grain 



shaken over a length of 

 11-ins. Crippled 5 ins. 

 from end. 



2.16 X 2.20 X 16.29 6442 36.0 Clear, not straight 



grain ; somewhat 

 shaken ; sheared along 

 shake in grain which 

 being cut off parallel had 

 no bottom support. 



4.08 in diar. X 24.12 6505 31.8 Clear and straight 



grained. Failed by 

 crippling 10 ins. from 

 end. 



2.70 X 4.20 X 16.45 634!) 30.8 Straight grained; sea- 



son cracks on one side ; 

 several small pin knots. 

 Failed by crippling 2 

 ins. from one end 

 through one of the pin 

 knots. 



2.38 X 3.56 X 16.74 7143 33.0 Straight grain; some 



small pin knots. Crip 

 pled through the largest 

 one at centre. 



1.73 X 5.98 X 17.73 4209 38.7 Grain parallel knot 



on edge 4 ins. from end ; 

 also bad season crack 

 and small deficiency in 

 one corner for 6 ins. 

 from one end. Burst 

 at knot and split along 

 season crack. 

 60 



