RESULTS OF COMPRESSION TESTS ON NEW DOUGLAS FIR Continued. 



2.60 X 3.23 X 25.4 4416 34.7 Straight grain; large 



knot 4 ins. from end on 

 an edge. Failed by crip- 

 pling at knot. 



2.27 X 2.28 X 23.46 4363 36.91 Straight grained ; clear 



except part of knot on 

 one end. Failed by crip- 

 pling at knot. 



4.20 X 4.36 X 27.88 2622 32.4 Heart ; grain 2i ins. 



out of straight ; heavy 

 season cracks ; two large 

 knots. Failed by bulg- 

 ing along season crack 

 and at knots 14 ins. 

 from end. 



4.05 X 4.20 X 24.70 5026 33.9 Tested before as pillar, 



failed then at 67,200 Ibs. 

 This portion had straight 

 grain ; two knots close 

 together 8 ins. from one 

 end going through piece. 

 Failed by crippling at 

 these knots. 



2.151 X 2.65 X 24.42 6237 36.0 Straight grain ; sea- 



son crack across end 

 running half the length 

 of the piece ; knot 3 ins. 

 from other end J in. in 

 diameter. Crippled at 

 the knot. 



2.65 X 2.66 X 20.24 6865 36.4 Straight -rained and 



clear ; season crack run- 

 ning down about 8 ins. 

 Crippled clean across 

 at Ibol of season 

 crack, apparently not in 

 duced by seasoning. 



2.00 X 2.01 X 27.40 Iis41 34.5 Clear" and straight 



grain ; heavy season 

 crack. Burst from end 

 to end on season crack. 



2.88 X 2.95 X 23.91 8106 38.8 Clear.straightgraim-d. 



Crippled H ins. from one 

 end. 



2.87 X 2.93 X 25.00 6600 35.5 dear, nearly straight 



grained ; slight season 

 crack. Failed by a 

 bulging on season crack 

 and afterwards crippled 

 on reduced section a! 

 centre. 



2.88 X 2.90 X 24.40 7856 36.4 Clear.straight grained- 



Failed by direct cripp'g- 



2.87 X 2.90 X 24.55 8065 38.0 Clear " and straight 



grained. Failed by di- 

 rect crippling 8 ins. from 

 end. 



2.90 X 2.95 X 25.70 8023 36.3 Clear and straight 



grained. Failed by di- 

 rect crippling 15 ins. 

 from end. 



2.78 X 2.S7 X 25.95 9700 40.9 Deficiency near centre, 



about J in. by 1 in. 

 (resin) ; fibre crooked 

 through vicinity of 

 knot ; otherwise clear 

 and straight grained. 

 Failed at crooked fibres 

 at deficiency. 



2.89 X 2.90 X 26.69 8269 334 Clear and rtrairfri 



grained ; failed liy com- 

 pression of fibres on a 

 corner. 



2.82 X 2.!>7 X 25.15 9104 40.2 Very heavy summer 



rings ; clear ; fibres bent 

 12 ins. from one end at 

 one side due to vicinity 

 of a knot. Failed at 

 crooked fibres. 



4.77 X 5.82 X 26.15 7709 36.5 Did not fail. 



4.77 X 4.CS X 22.32 8411 Same as preceding 



with piece cut oil j clear 

 and straight grain. 



62 



