Bearing strength of wood under steel aircraft bolts and washers and other factors influencing fitting design (1928)
NASA Technical Reports Server (NTRS) · leaf 31
Fig. 4 N.A.C.A. Technical Note No.296 .500C 4000 o H m fH CD P.. 1000 … 0° 30° 60° 90° 0° 30° 60° 90° Angle of line of action with grain. Fig.4 Curves showing bearing strength of spruce under bolts sub- jected to symmetrical loads acting at various angles to the grain of the wood. Each point is the average of three tests. Fall line calculated by Hankinson Formula.
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