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 xiii
... ground with the chain only • · XXI . To trace a curve on the ground with transit and 100 - feet chain XXII . Turning obstacles to vision in tangent 63 66 71 318 XXIII . Turning obstacles to measurement in tangent 73 SUGGESTIONS AS TO ...
... ground with the chain only • · XXI . To trace a curve on the ground with transit and 100 - feet chain XXII . Turning obstacles to vision in tangent 63 66 71 318 XXIII . Turning obstacles to measurement in tangent 73 SUGGESTIONS AS TO ...
Página 27
... ground on the contemplated line . - 3. Let the 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 ...
... ground on the contemplated line . - 3. Let the 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 ...
Página 28
... ground . ought not to be more than 600 or 800 feet asunder . 7. On ordinary railroad field work such nicety as is implied in most of these rules is not required . To read to the nearest tenth is sufficient , especially where the ...
... ground . ought not to be more than 600 or 800 feet asunder . 7. On ordinary railroad field work such nicety as is implied in most of these rules is not required . To read to the nearest tenth is sufficient , especially where the ...
Página 29
... ground to be occupied , and can decide between summits well differenced in height . If not so differ- enced , questions of detour , of approaches , and the like , will contribute to determine the expediency of making an instru- mental ...
... ground to be occupied , and can decide between summits well differenced in height . If not so differ- enced , questions of detour , of approaches , and the like , will contribute to determine the expediency of making an instru- mental ...
Página 30
... ground surface . Formation slopes are usually stated in parts horizontal to one part vertical . Thus a slope of 45 ° is " 1 to 1. " A slope of " 2 to 1 " has a horizontal reach of two feet to each foot vertical . The carriages of a ...
... ground surface . Formation slopes are usually stated in parts horizontal to one part vertical . Thus a slope of 45 ° is " 1 to 1. " A slope of " 2 to 1 " has a horizontal reach of two feet to each foot vertical . The carriages of a ...
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