The Field Engineer: A Handy Book of Practice in the Survey, Location, and Track-work of Railroads : Containing a Large Collection of Rules and Tables, Original and Selected, Applicable to Both the Standard and the Narrow Gauge, and Prepared with Special Reference to the Wants of the Young EngineerVan Nostrand, 1882 - 6 páginas |
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Página xiv
... turnout curve , 131 To find the main frog angle , the radius of outer rail being known . To find the angle of the middle frog in the case of a double turnout · 131 To find the distance from toe of switch to point 131 of middle frog ...
... turnout curve , 131 To find the main frog angle , the radius of outer rail being known . To find the angle of the middle frog in the case of a double turnout · 131 To find the distance from toe of switch to point 131 of middle frog ...
Página 133
... turnout curve from curved track , proceed thus : - - First find the radius as for a turnout from straight track by the preceding rule ; call it , as before , R. Call the radius of the main track R2 , and the required radius of turnout ...
... turnout curve from curved track , proceed thus : - - First find the radius as for a turnout from straight track by the preceding rule ; call it , as before , R. Call the radius of the main track R2 , and the required radius of turnout ...
Página 138
... turnout . The corresponding rail of a double turnout can be laid off from them , if required , by symmetrical measurements . 5. In the case of a singie turnout , stretch the cord from the toe of switch , as above , to the point of frog ...
... turnout . The corresponding rail of a double turnout can be laid off from them , if required , by symmetrical measurements . 5. In the case of a singie turnout , stretch the cord from the toe of switch , as above , to the point of frog ...
Contenido
Definitions and principles | 3 |
Definitions | 11 |
ADJUSTMENT AND USE OF INSTRUMENTS | 21 |
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Otras ediciones - Ver todas
The Field Engineer: A Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2015 |
The Field Engineer, a Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2016 |
Términos y frases comunes
100 feet long 100-feet chords called central angle chord 100 feet column cross-hair Cube Roots decimals deflection angle deflection distance degree of curvature degree of curve Diff divided elevation engineer equal Example feet 8 inches figure find the radius fixed foregoing frog angle Full Gauge gauge of track gauge side grade ground Hypsometry index angle instrument intersection angle length of switch-rail located logarithm magnetic bear Main frog dist main track mantissa mark measure method middle frog middle ordinate middle point minutes Multiply outer rail parallel perpendicular quotient radii radius REVERSED CURVE screws Sine 1 Cotang Square Roots stake standard gauge 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 ΙΟ ΤΑΝ