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 17
... remainder will be the sum of the other two angles . Then , by proposition 3 , - As the sum of the given sides is to their difference , So is the tangent of half the sum of the remaining angles to the tangent of half their difference ...
... remainder will be the sum of the other two angles . Then , by proposition 3 , - As the sum of the given sides is to their difference , So is the tangent of half the sum of the remaining angles to the tangent of half their difference ...
Página 69
... remainder will be the required index angle . Thus the index angle which established stake 9 was 33 ° 45 ' . Double this angle will be 67 ° 30 ' ; subtracting 18 ° 45 ' , the reading in tangent at the last turning - point , we have 48 ...
... remainder will be the required index angle . Thus the index angle which established stake 9 was 33 ° 45 ' . Double this angle will be 67 ° 30 ' ; subtracting 18 ° 45 ' , the reading in tangent at the last turning - point , we have 48 ...
Página 131
... remainder by radius ; call the quotient b . Subtract b from a : the remainder will be the natural cosine of the main frog angle . 13. To find the Angle of the Middle Frog , in the Case of a Double Turnout . Call the natural cosine of ...
... remainder by radius ; call the quotient b . Subtract b from a : the remainder will be the natural cosine of the main frog angle . 13. To find the Angle of the Middle Frog , in the Case of a Double Turnout . Call the natural cosine of ...
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