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
Resultados 1-5 de 17
Página xiv
... outer rail of 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 ...
... outer rail of 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 ...
Página xv
... 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 of meridian passage of North Star above the pole for the year 1870 , and on · II . Time of ...
... 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 of meridian passage of North Star above the pole for the year 1870 , and on · II . Time of ...
Página 129
... outer rail , R. 2. Usually the length and throw of switch - rail and the angles of the frogs at O are given . In that case , to find R , F ' , = 3. The angle HN W , between the line and the distances LO , LI , reason thus : - FROGS AND ...
... outer rail , R. 2. Usually the length and throw of switch - rail and the angles of the frogs at O are given . In that case , to find R , F ' , = 3. The angle HN W , between the line and the distances LO , LI , reason thus : - FROGS AND ...
Página 130
... rail pro- longed and a tangent to turnout curve at frog point O , NOP N II W = = FS . The angle NOL or NLO , be ... Outer Rail of Turnout sought . 130 FROGS AND SWITCHES . To find the angle of switch-rail with main track To find the ...
... rail pro- longed and a tangent to turnout curve at frog point O , NOP N II W = = FS . The angle NOL or NLO , be ... Outer Rail of Turnout sought . 130 FROGS AND SWITCHES . To find the angle of switch-rail with main track To find the ...
Página 131
... Outer Rail being known . Subtract Call the natural cosine of the switch - rail angle a . the throw of switch - rail from the gauge of track , both in deci- mals . Divide the remainder by radius ; call the quotient b . Subtract b from a ...
... Outer Rail being known . Subtract Call the natural cosine of the switch - rail angle a . the throw of switch - rail from the gauge of track , both in deci- mals . Divide the remainder by radius ; call the quotient b . Subtract b from a ...
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