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 50
... chord BE . 6. Acute angles at the circumference , subtended by equal chords , are equal . 7. An acute angle , KF H , between a tangent and a chord , is called a tangential angle , and is equal to the peripheral angle LFH subtended by an ...
... chord BE . 6. Acute angles at the circumference , subtended by equal chords , are equal . 7. An acute angle , KF H , between a tangent and a chord , is called a tangential angle , and is equal to the peripheral angle LFH subtended by an ...
Página 64
... chord 66 feet , is equal ( XVIII . , 22 ) to twice the chord multiplied by the sine of half the tangential angle , 132 X 0.04507 = 5.95 feet . The deflec- tion distance ( XVIII . , 19 ) is equal to twice the chord multi- plied by the ...
... chord 66 feet , is equal ( XVIII . , 22 ) to twice the chord multiplied by the sine of half the tangential angle , 132 X 0.04507 = 5.95 feet . The deflec- tion distance ( XVIII . , 19 ) is equal to twice the chord multi- plied by the ...
Página 65
... chord is to that for a whole chord as the square of the sub - chord is to the square of the whole chord . The same is true of deflection dis- tances . 6. In the example we are treating , the tangential distance for the whole chord of 66 ...
... chord is to that for a whole chord as the square of the sub - chord is to the square of the whole chord . The same is true of deflection dis- tances . 6. In the example we are treating , the tangential distance for the whole chord of 66 ...
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