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 6-10 de 16
Página 131
... Turnout Curve . Subtract the throw of switch - rail from the gauge of track , both in decimals ; call the remainder ... Turnout . Call the natural cosine of the main frog angle a . Divide half the gauge of track by the radius of outer ...
... Turnout Curve . Subtract the throw of switch - rail from the gauge of track , both in decimals ; call the remainder ... Turnout . Call the natural cosine of the main frog angle a . Divide half the gauge of track by the radius of outer ...
Página 132
... turnout curve so that the approach to the frog shall be fair and regular . How trackmen may do this without the use of instruments , in a very simple way , will be shown hereafter . Not that frogs may be set hap - hazard , and the ...
... turnout curve so that the approach to the frog shall be fair and regular . How trackmen may do this without the use of instruments , in a very simple way , will be shown hereafter . Not that frogs may be set hap - hazard , and the ...
Página 133
... turnout curve from curved track , proceed thus : - First find the radius as for a turnout from straight track by the preceding rule ; call it , as before , R. Call the radius of the main track R2 , and the required radius of turnout ...
... turnout curve from curved track , proceed thus : - First find the radius as for a turnout from straight track by the preceding rule ; call it , as before , R. Call the radius of the main track R2 , and the required radius of turnout ...
Página 134
... turnouts . Numbers 51 , 71 , and 10 make an excellent suit ; numbers 5 , 7 , and 9 also answer very well . 26. At the terminal stations , and about the shops of busy roads , patterns necessarily multiply . The better way in such cases ...
... turnouts . Numbers 51 , 71 , and 10 make an excellent suit ; numbers 5 , 7 , and 9 also answer very well . 26. At the terminal stations , and about the shops of busy roads , patterns necessarily multiply . The better way in such cases ...
Página 135
... TURNOUT TABLE . - SWITCH - RAILS , CURVED ;. TURNOUT TABLE . - SWITCH - RAILS , STRAIGHT ; GAUGE OF TRACK , 4 FEET 8 INCHES ; THROW OF SWITCH- RAIL , 5 INCHES . Switch - rail , 12 ft Do.angle , 2 ° 00 ' Main frog dist . Rad . outer rail ...
... TURNOUT TABLE . - SWITCH - RAILS , CURVED ;. TURNOUT TABLE . - SWITCH - RAILS , STRAIGHT ; GAUGE OF TRACK , 4 FEET 8 INCHES ; THROW OF SWITCH- RAIL , 5 INCHES . Switch - rail , 12 ft Do.angle , 2 ° 00 ' Main frog dist . Rad . outer rail ...
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