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 xv
... for topography · XVII . Rise per mile of various grades • 149 150 150 · 151 151 · 152 152 · 153 · 153 · 155 • 161 • 179 197 243 . 269 • 315 317 LOGARITHMS . I.-II. LOGARITHMS . I. DEFINITIONS AND PRINCIPLES . TABLE OF CONTENTS . XV.
... for topography · XVII . Rise per mile of various grades • 149 150 150 · 151 151 · 152 152 · 153 · 153 · 155 • 161 • 179 197 243 . 269 • 315 317 LOGARITHMS . I.-II. LOGARITHMS . I. DEFINITIONS AND PRINCIPLES . TABLE OF CONTENTS . XV.
Página 28
... grade lines on preliminary survey . The location levels are usually carried along more carefully ; but even then the writer's practice has been to turn to hundredths only . S. The Philadelphia Rod is the best for our service . The ...
... grade lines on preliminary survey . The location levels are usually carried along more carefully ; but even then the writer's practice has been to turn to hundredths only . S. The Philadelphia Rod is the best for our service . The ...
Página 31
... grade points , that is to say , the points where excavation passes into embankment . The rods should be taken carefully at the stakes , and the latter marked on their backs to the nearest tenth , as " grade , " " C 12 , " signify- ing ...
... grade points , that is to say , the points where excavation passes into embankment . The rods should be taken carefully at the stakes , and the latter marked on their backs to the nearest tenth , as " grade , " " C 12 , " signify- ing ...
Página 32
... grade This gives him a point in the air , 10 15.5 = 25.5 feet out from the centre stake , level with the instrument , as the limit of the imaginary section ; and from that point he can pretty well judge where a line corresponding to the ...
... grade This gives him a point in the air , 10 15.5 = 25.5 feet out from the centre stake , level with the instrument , as the limit of the imaginary section ; and from that point he can pretty well judge where a line corresponding to the ...
Página 33
... grade , com- manding the upper slope . - Note the change of ground 11 feet out , and take a rod there , recording the observation . The cutting at that point is 25.5 - 9.5 = 16 feet , corresponding to a distance out for the side stake ...
... grade , com- manding the upper slope . - Note the change of ground 11 feet out , and take a rod there , recording the observation . The cutting at that point is 25.5 - 9.5 = 16 feet , corresponding to a distance out for the side stake ...
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