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 16
Página 41
... range being readily found . 5. Having thus brought the cross - hair to revolve in a plane , it is next to be seen whether the plane in which it revolves is truly vertical . To do so , set the instrument near the base of some lofty point ...
... range being readily found . 5. Having thus brought the cross - hair to revolve in a plane , it is next to be seen whether the plane in which it revolves is truly vertical . To do so , set the instrument near the base of some lofty point ...
Página 45
... range with the star until the star apparently ceases to move . Mark that range . Multi- ply the natural tangent of the azimuth , given in Table III . , by the distance in feet from the point of observation to the mark in the northern range ...
... range with the star until the star apparently ceases to move . Mark that range . Multi- ply the natural tangent of the azimuth , given in Table III . , by the distance in feet from the point of observation to the mark in the northern range ...
Página 46
... , bisecting the angle between the northern range marks . With a vernier instrument , the azimuth can be laid off directly , in degrees and minutes . PROPOSITIONS AND PROBLEMS RELATING TO THE CIRCLE . XVI . 46 MISCELLANEOUS .
... , bisecting the angle between the northern range marks . With a vernier instrument , the azimuth can be laid off directly , in degrees and minutes . PROPOSITIONS AND PROBLEMS RELATING TO THE CIRCLE . XVI . 46 MISCELLANEOUS .
Página 65
... range C T. The point D on the curve may then be fixed by making ND equal to 5.95 feet , the tangential distance . Next run out the chain to M , in the range CD ; make ME equal to the deflection distance , 11.9 feet , and fix the point E ...
... range C T. The point D on the curve may then be fixed by making ND equal to 5.95 feet , the tangential distance . Next run out the chain to M , in the range CD ; make ME equal to the deflection distance , 11.9 feet , and fix the point E ...
Página 66
... range U F ; FK will be in the line of the terminal tangent . 11. This analysis has been somewhat minute and detailed , in order that the subject may be thoroughly understood . An instrument for measuring angles should always be used in ...
... range U F ; FK will be in the line of the terminal tangent . 11. This analysis has been somewhat minute and detailed , in order that the subject may be thoroughly understood . An instrument for measuring angles should always be used in ...
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