New York [etc.] Simmons-Boardman Pub. Co. [etc.] · leaf 342
-^ >««ktf uat^ ^ ^ ^Hlg EtGDRE.6. average strength of thin specimens is much greater thanthe thick ones. Thus the average strength of pieces ij in.thick, up to X in. inclusive, is 3;i,300 lbs , and of the thick1 pieces, »4m. up to P.J in., inclusive only 28,980 Ibs.-thethin specimens being 15…
Railroads · Railroad cars
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