. Railway mechanical engineer . per cent, usingseam No. 14 as an example. On the vertical scale of efficiency find per cent, andproject a line in a horizontal direction until it intersects theline representing seam 14. From this point project vertical-ly to the 15/16-in. line, and this intersection projectedto the vertical axis gives a tensile strength of 57,000 lb. persq. in. Problem 4.—If seam Xo. 14 has an efficiency of percent what will be the efficiency of seam No. 2, providing thatthe thickness of plate, tensile strength of plate and shearingstress of rivets are alike for
. Railway mechanical engineer . per cent, usingseam No. 14 as an example. On the vertical scale of efficiency find per cent, andproject a line in a horizontal direction until it intersects theline representing seam 14. From this point project vertical-ly to the 15/16-in. line, and this intersection projectedto the vertical axis gives a tensile strength of 57,000 lb. persq. in. Problem 4.—If seam Xo. 14 has an efficiency of percent what will be the efficiency of seam No. 2, providing thatthe thickness of plate, tensile strength of plate and shearingstress of rivets are alike for both seams? From the point where the per cent line from the ver-tical scale intersects the line of seam No. 14, project a linevertically to the line of seam No. 2 and from this point pro-ject a line horizontally and find the efficiency, which is cent. Fig. 3 shows the stress on several sizes of stay bolts, underconditions varjing from supporting 13 sq. in. to 22 sq. in. March, 191S RAILWAY MECHANICAL ENGINEER 141. » \1U\ 1 \ \ 1 f 7 / s Tiiuin 1 / 1 f^ i 2i\ l\aa iiiMi 1 1 1^ n \\ \\ \ \ iq \\ \\ \ 1 r A / ;^ \ \\ \/l / / / 1 \ \\ \ \ n /y 1 / / P; \ \\ \\ nil /// s \ \\ \\ \ //A / // [ ^ \ V y // / ^ // \ \ \\ [ / 11/ 7 ^ \ w \\ W iW \ Y y y «> -ci\ \ \ \\ A W S! ^ W \ \ \\ \ 1 \ \ \\ \ l\i \ \\ \ 11 \ \ \\ \ /I —1 \ \ y w 1// \^ \ y y n \ 1A i\i l\ \ ill 1 y i\ 1 \ jjj \ 1 li \ 1 l.* \ fi In \ 1 1 1^ •8 jf \ v\ H 1 \ 1 4 \ ( I \ 1 Sl 1 \ y \ \ 1 1 N y \\ \ \ 11//1 A \\ \ \ ■ ~^ 1 A / \ fj\ \\\ \ \ , \ \l \\ I \ \ 1 1 \, \\ X\ \ 1 1 fi m / / A \ \ \\ \\ \ \ \ fS 1 / y \\ \\ \ \ w i/ / \ W m \ \ ^^ / ,, / \ \ \ W \\ 1 \ \ \ < tn / / ■^is *\ \ A \ \\\ \ 1 r / 1 ^1 t\ \ y w \ 1 I / T? \°^ a\ o\ ciUoW^W l\§lf « J / \ \ \1\U\\ \ = 142 RAILWAY MECHANICAL EXGIXEER Vol. 92, No. 3 of area with boiler pressures varying from 110 lb. to 230lb. gage, advancing by five pounds general e
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
