Handbook for machine designers, shop men and draftsmen (1916)
Halsey, Frederick A. (Frederick Arthur), 1856-1935 · New York, McGraw-Hill book company, inc.; [etc., etc.] · leaf 433
the plain partsat the ends do not exceed 12 ins. in length. In calculating the mean diameter of the Morison furnace, theleast inside diameter plus 2 ins., may be taken as the mean diameter. Manholes P. 65, p. 258. An elliptical manhole opening shall be not lessthan 11X15 ins. or 10X16 ins. in size.… … Fig. 23.—Riveting of man-hole frames. p. 260. Manhole frames on shells or drums when used, shallhave the proper curvature, and on boilers over 48 ins. in diameter shallbe riveted to the shell or drum with two rows of rivets, which may bepitched as shown in Fig. 23. The strength of the rivets in…
Machine design
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