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 131
... Rail of Turnout Curve . Subtract the throw of switch - rail from the gauge of track , both in decimals ; call the remainder a . cosine of the main frog angle from the switch - rail angle ; call the remainder b . quotient will be radius ...
... Rail of Turnout Curve . Subtract the throw of switch - rail from the gauge of track , both in decimals ; call the remainder a . cosine of the main frog angle from the switch - rail angle ; call the remainder b . quotient will be radius ...
Página 132
... 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 The above may be ...
... 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 The above may be ...
Página 136
... RAILS , CURVED ; GAUGE OF TRACK , 4 FEET 8 INCHES ; THROW OF SWITCH- RAIL , 5 INCHES . MAIN FROG NUMBERS AND ANGLES . Main frog dist . Rad . outer rail . 144.2 Mid . frog dist . 17.29 Mid . frog angle . 19 ° 44 / Main frog dist . Rad .
... RAILS , CURVED ; GAUGE OF TRACK , 4 FEET 8 INCHES ; THROW OF SWITCH- RAIL , 5 INCHES . MAIN FROG NUMBERS AND ANGLES . Main frog dist . Rad . outer rail . 144.2 Mid . frog dist . 17.29 Mid . frog angle . 19 ° 44 / Main frog dist . Rad .
Contenido
Definitions and principles | 3 |
Definitions | 11 |
ADJUSTMENT AND USE OF INSTRUMENTS | 21 |
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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