The Field Engineer: A Handy Book of Practice in the Survey, Location, and Trackwork of Railroads; Containing ... Rules and Tables ... Applicable to ... the Standard and the Narrow Gauge ...D. van Nostrand, 1880 - 318 páginas |
Dentro del libro
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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 • • 131 131 · • • 131 135 , 136 To find the distance from toe of switch to ...
... 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 • • 131 131 · • • 131 135 , 136 To find the distance from toe of switch to ...
Página xv
... turnout . XLVIII . Crossings on straight lines XLIX . Crossings on curves L. Elevation of the outer rail on curves . Table for same · · LI . Trackmen's table of curves and spring of rails . Explanation of same LIST OF TABLES . I. Time ...
... turnout . XLVIII . Crossings on straight lines XLIX . Crossings on curves L. Elevation of the outer rail on curves . Table for same · · LI . Trackmen's table of curves and spring of rails . Explanation of same LIST OF TABLES . I. Time ...
Página 115
... turnouts , the adjustment of tracks near stations or shops , and the like ; but reversed curves should never be used on the main line between stations , where they are both objectionable and unne- cessary . Ground which allows any ...
... turnouts , the adjustment of tracks near stations or shops , and the like ; but reversed curves should never be used on the main line between stations , where they are both objectionable and unne- cessary . Ground which allows any ...
Página 129
... TURNOUT CURVE , THE FROG ANGLES , AND THE DISTANCES FROM THE TOE OF SWITCH TO THE FROG POINTS . 1. Draw the figure as in margin , C being the centre of the turnout curve , CK parallel to main track , and OK , IE , LM , perpendicular to ...
... TURNOUT CURVE , THE FROG ANGLES , AND THE DISTANCES FROM THE TOE OF SWITCH TO THE FROG POINTS . 1. Draw the figure as in margin , C being the centre of the turnout curve , CK parallel to main track , and OK , IE , LM , perpendicular to ...
Página 130
... turnout curve at frog point O , NOP N II W = = FS . The angle NOL or NLO , be- tween chord and tangent , = half the intersection angle HNW = = ( FS ) . The angle NOB = NOL + LOB . But NOL is seen to be = ( F S ) , and NOB = F ; then LOB ...
... turnout curve at frog point O , NOP N II W = = FS . The angle NOL or NLO , be- tween chord and tangent , = half the intersection angle HNW = = ( FS ) . The angle NOB = NOL + LOB . But NOL is seen to be = ( F S ) , and NOB = F ; then LOB ...
Otras ediciones - Ver todas
The Field Engineer: A Handy Book of Practice in the Survey, Location and ... William F. Shunk Sin vista previa disponible - 2008 |
The Field Engineer: A Handy Book of Practice in the Survey, Location, and ... William Findlay Shunk Sin vista previa disponible - 2017 |
Términos y frases comunes
100 feet long 100-feet chords adjustment apex distance called central angle column Cosine 1 Sine Cotang cross-hair Cube Roots decimals deflection distance degree of curvature DEGREE OF CURVE Diff divided elevation engineer equal Example feet figure fixed foregoing frog angle Full Gauge gauge of track gauge side gent ground index angle instrument intersection angle length of switch-rail located logarithm M.
M. I Sine Main frog dist mantissa mark measure method middle frog middle ordinate middle point minutes Multiply observation outer rail parallel perpendicular quotient radii radius range Reciprocals REVERSED CURVE right triangle screws slope Square Roots standard gauge straight line 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 vertical ΙΟ ΤΑΝ
Pasajes populares
Página 18 - ... the square of the hypothenuse is equal to the sum of the squares of the other two sides.
Página 4 - The logarithm of any power of a number is equal to the logarithm of the number multiplied by the exponent of the power.
Página 11 - ... is supposed to be divided into 60 equal parts, called minutes; and each minute into 60 equal parts, called seconds. Degrees, minutes, and seconds, are designated respectively, by the characters ° ' ". For example, ten degrees, eighteen minutes, and fourteen seconds, would be written 10° 18
Página 4 - The logarithm of the product of two numbers is equal to the sum of the logarithms of the numbers. log» MN = log» M + log