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 23
Página x
... elevations in levelling . H. I. Height of instrument : elevation of the level above the datum or zero plane . H. W. High water . L. W. Low water . TABLE OF CONTENTS . PAGE 3 • 4 4 LOGARITHMS x ABBREVIATIONS .
... elevations in levelling . H. I. Height of instrument : elevation of the level above the datum or zero plane . H. W. High water . L. W. Low water . TABLE OF CONTENTS . PAGE 3 • 4 4 LOGARITHMS x ABBREVIATIONS .
Página xi
... Correction for the earth's curvature and refrac- tion · · To find differences in elevation by means of the barometer Heights by the thermometer 25 25 285 26 28 8835 29 29 xi XII . Setting slope stakes XIII . Vertical curves XIV.
... Correction for the earth's curvature and refrac- tion · · To find differences in elevation by means of the barometer Heights by the thermometer 25 25 285 26 28 8835 29 29 xi XII . Setting slope stakes XIII . Vertical curves XIV.
Página xv
... 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 of meridian passage of North Star above the pole for the year 1870 , and on ...
... 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 of meridian passage of North Star above the pole for the year 1870 , and on ...
Página 26
... elevation of A above mean tide should be ascertained . It is to be regretted that this was not done from the outset , 2.64 1.9 81 2.22 2 8.4 3.7 3.2 3 10.36 under statute provisions requiring maps and profiles also to be filed at the ...
... elevation of A above mean tide should be ascertained . It is to be regretted that this was not done from the outset , 2.64 1.9 81 2.22 2 8.4 3.7 3.2 3 10.36 under statute provisions requiring maps and profiles also to be filed at the ...
Página 27
... elevation of the initial bench - mark , A , in the figure , be taken at +200 . Set the level at B , and suppose the rod on the B M to read 2.22 . The " instrument height " then is 202.22 . If the rod at sta . O reads 8.4 , the elevation ...
... elevation of the initial bench - mark , A , in the figure , be taken at +200 . Set the level at B , and suppose the rod on the B M to read 2.22 . The " instrument height " then is 202.22 . If the rod at sta . O reads 8.4 , the elevation ...
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