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 |
Dentro del libro
Resultados 1-3 de 28
Página 57
... deflection angle by above method ( 18 ) . Then , angle HAB in the figure being made equal to D , and HA = BA , BH will be the deflection distance . Draw A K to the middle point of HB . = Then d = = HB = = 2 KB = 2 AB X sin KAB D. - 2 CX ...
... deflection angle by above method ( 18 ) . Then , angle HAB in the figure being made equal to D , and HA = BA , BH will be the deflection distance . Draw A K to the middle point of HB . = Then d = = HB = = 2 KB = 2 AB X sin KAB D. - 2 CX ...
Página 68
... deflections from the line of tangent at B , bear in mind that the deflection for a whole chain is half the degree of curvature ; and that , in field - curves of more than 300 feet radius , the deflections for sub - chords , or plusses ...
... deflections from the line of tangent at B , bear in mind that the deflection for a whole chain is half the degree of curvature ; and that , in field - curves of more than 300 feet radius , the deflections for sub - chords , or plusses ...
Página 69
... deflection of 3 ° 45 ' will fix 10 : a further deflection of 3 ° 45 ' will fix 11 , and the index will stand at 48 ° 45 ′ + 7 ° 30 ′ : 56 ° 15 ' . F , - = 14. To find the deflection corresponding to the sub - chord 11 40 feet : by the ...
... deflection of 3 ° 45 ' will fix 10 : a further deflection of 3 ° 45 ' will fix 11 , and the index will stand at 48 ° 45 ′ + 7 ° 30 ′ : 56 ° 15 ' . F , - = 14. To find the deflection corresponding to the sub - chord 11 40 feet : by the ...
Contenido
Definitions and principles | 3 |
Definitions | 11 |
ADJUSTMENT AND USE OF INSTRUMENTS | 21 |
Otras 13 secciones no mostradas
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