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 67
... range of the terminal tangent , measure I F , = 503 feet , and set the P. T. at F. Then direct the telescope to the last point fixed on the ini- tial range AB , meas- ure I B , = 503 feet , and set the P. C. at B. Move to B. 4. Suppose ...
... range of the terminal tangent , measure I F , = 503 feet , and set the P. T. at F. Then direct the telescope to the last point fixed on the ini- tial range AB , meas- ure I B , = 503 feet , and set the P. C. at B. Move to B. 4. Suppose ...
Página 72
... ranges , that the lines of foresight and backsight may accurately coincide . In locating , the following method is ... range of the centre line at C and D. The offset distances should be measured very carefully with the rod , or with a ...
... ranges , that the lines of foresight and backsight may accurately coincide . In locating , the following method is ... range of the centre line at C and D. The offset distances should be measured very carefully with the rod , or with a ...
Página 73
... range with D and E. Then GF BE , or GH = CE . 5. Should the use of a right angle be inconvenient , turn any angle EBD = x , measure BD about equal by estimation to BE , if the ground permits , and Then the angle B E D , or 2 , set a ...
... range with D and E. Then GF BE , or GH = CE . 5. Should the use of a right angle be inconvenient , turn any angle EBD = x , measure BD about equal by estimation to BE , if the ground permits , and Then the angle B E D , or 2 , set a ...
Página 75
... range two points F and G , between which a cord may be stretched , and as nearly as can be judged on opposite sides of E. Move to D , foresight to C , deflect 71 ° 48 ' right , and establish a point E at intersection with FG . Cross to ...
... range two points F and G , between which a cord may be stretched , and as nearly as can be judged on opposite sides of E. Move to D , foresight to C , deflect 71 ° 48 ' right , and establish a point E at intersection with FG . Cross to ...
Página 82
... range , when practicable , to run by . The telescope , in wind or sun , will sometimes warp a little out of line . Never omit to note both the calculated and magnetic bear- ings of the lines on survey , and of the tangents on location ...
... range , when practicable , to run by . The telescope , in wind or sun , will sometimes warp a little out of line . Never omit to note both the calculated and magnetic bear- ings of the lines on survey , and of the tangents on location ...
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