Modern locomotive engineering, with questions and answers .. (1913)
Swingle, Calvin Franklin, 1846- [from old catalog] · Chicago, F. J. Drake & co · leaf 81
^4 LOCOMOTIVE ENGINEERING given flat surface in a boiler, the working pressurebeing known, it must be remembered that each stay issubjected to the pressure on an area bounded by linesdrawn midway between it and its neighbors. There-fore the area in square inches, of the surface to besupported by… … Vertical Secfion A-B.
Locomotives
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