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 |
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Página 33
... observation , will place a slope stake on the second or third trial , without conscious effort of mind . 11. Next , suppose the level at B , 25.5 feet above grade , com- manding the upper slope . - Note the change of ground 11 feet out ...
... observation , will place a slope stake on the second or third trial , without conscious effort of mind . 11. Next , suppose the level at B , 25.5 feet above grade , com- manding the upper slope . - Note the change of ground 11 feet out ...
Página 35
... observing that in this --23 : 5- -20.4 A -1 / 2 - TO - 1- -18.3- 3.5-10.0-- 6.5 -14.6- -13.1 -9-0- -3.8- -12.8- case the instrument is above grade , and that its height above grade is to be deducted from the rod at any point in order to ...
... observing that in this --23 : 5- -20.4 A -1 / 2 - TO - 1- -18.3- 3.5-10.0-- 6.5 -14.6- -13.1 -9-0- -3.8- -12.8- case the instrument is above grade , and that its height above grade is to be deducted from the rod at any point in order to ...
Página 41
... Observe where the opposite end strikes . If between graduation lines , mark the precise spot with a sharp pencil . Turn the needle end for end , and stay the reverse point at the division line first observed . Again spot with the pencil ...
... Observe where the opposite end strikes . If between graduation lines , mark the precise spot with a sharp pencil . Turn the needle end for end , and stay the reverse point at the division line first observed . Again spot with the pencil ...
Página 43
... observe on the limb the number of full degrees , and the half - degree , if any , which zero of the vernier has passed ; next , look along the vernier from its zero towards the right , if the movement has been towards the right , and ...
... observe on the limb the number of full degrees , and the half - degree , if any , which zero of the vernier has passed ; next , look along the vernier from its zero towards the right , if the movement has been towards the right , and ...
Página 44
... observe the position of the ring , in order that it may be got back again right side up and right face forward , turn it lengthwise of the barrel . Insert the end of a pine sliver into one of the side holes , take out the vertical ...
... observe the position of the ring , in order that it may be got back again right side up and right face forward , turn it lengthwise of the barrel . Insert the end of a pine sliver into one of the side holes , take out the vertical ...
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