The Field Engineer: A Handy Book of Practice in the Survey, Location, and Trackwork of Railroads; Containing ... Rules and Tables ... Applicable to ... the Standard and the Narrow Gauge ...D. van Nostrand, 1880 - 318 Seiten |
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Seite xiv
... track . 130 To find the distance from toe of switch to point of main frog . · 130 To find the radius of outer rail of turnout curve , 131 To find the main frog angle , the radius of outer rail being known . To find the angle of the ...
... track . 130 To find the distance from toe of switch to point of main frog . · 130 To find the radius of outer rail of turnout curve , 131 To find the main frog angle , the radius of outer rail being known . To find the angle of the ...
Seite 129
... track , and OK , IE , LM , perpendicular to it . Call the angle of the frogs at O , F ; that of the intermediate frog at I , 2 F ' ; the throw of the switch - rail for single turnout , D ; its angle with main track , S ; the gauge of the ...
... track , and OK , IE , LM , perpendicular to it . Call the angle of the frogs at O , F ; that of the intermediate frog at I , 2 F ' ; the throw of the switch - rail for single turnout , D ; its angle with main track , S ; the gauge of the ...
Seite 130
... switch - rail pro- longed and a tangent to turnout curve at frog point O , NOP N II W = = FS . The angle NOL or NLO ... length : the quotient will be the natural sine of the angle sought . 10. To find the Distance from Toe of Switch to ...
... switch - rail pro- longed and a tangent to turnout curve at frog point O , NOP N II W = = FS . The angle NOL or NLO ... length : the quotient will be the natural sine of the angle sought . 10. To find the Distance from Toe of Switch to ...
Seite 131
... switch - rail from the gauge of track , both in decimals ; call the remainder a . cosine of the main frog angle from ... Distance from Toe of Switch to Point of Middle Frog . Subtract the throw of switch - rail from half the gauge of track ...
... switch - rail from the gauge of track , both in decimals ; call the remainder a . cosine of the main frog angle from ... Distance from Toe of Switch to Point of Middle Frog . Subtract the throw of switch - rail from half the gauge of track ...
Seite 132
... length of switch - rail in feet ; F the distance from toe of outer switch - rail to point of frog in feet . Then , for standard gauge , 4 feet 8 inches , straight switch- rail , and 5 inches throw of switch . F - 8.6 L N L + 0.42 N ...
... length of switch - rail in feet ; F the distance from toe of outer switch - rail to point of frog in feet . Then , for standard gauge , 4 feet 8 inches , straight switch- rail , and 5 inches throw of switch . F - 8.6 L N L + 0.42 N ...
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The Field Engineer: A Handy Book of Practice in the Survey, Location and ... William F. Shunk Keine Leseprobe verfügbar - 2008 |
The Field Engineer: A Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Keine Leseprobe verfügbar - 2017 |
Häufige Begriffe und Wortgruppen
100 feet long 100-feet chords adjustment apex distance called central angle column Cosine 1 Sine Cotang cross-hair Cube Roots decimals deflection distance degree of curvature DEGREE OF CURVE Diff divided elevation engineer equal Example feet figure fixed foregoing frog angle Full Gauge gauge of track gauge side gent ground index angle instrument intersection angle length of switch-rail located logarithm M.
M. I Sine Main frog dist mantissa mark measure method middle frog middle ordinate middle point minutes Multiply observation outer rail parallel perpendicular quotient radii radius range Reciprocals REVERSED CURVE right triangle screws slope Square Roots standard gauge straight line sub-chord subtended Subtract Suppose Table XVI tabular tance Tang tangent A B tangential angle tangential distance telescope terminal tangent tion toe of switch Trigonometry turnout curve vernier versin vertical ΙΟ ΤΑΝ
Beliebte Passagen
Seite 18 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Seite 4 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Seite 11 - ... is supposed to be divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and fourteen seconds, would be written 10° 18
Seite 4 - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers. log» MN = log» M + log