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
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Página 25
... moved by gradual stress , not by pounding . They are a rude device . With so short a leverage as the length of the common adjust- manageable motion . They reproach the instrument - maker's art ing - pin supplies , it is almost ...
... moved by gradual stress , not by pounding . They are a rude device . With so short a leverage as the length of the common adjust- manageable motion . They reproach the instrument - maker's art ing - pin supplies , it is almost ...
Página 27
... move the instrument to C , and , sighting back to sta . 2 , let the rod standing on the pin read 2.64 . This makes the new " instrument height ” at C = 201.41 , the height of sta . 2 , 2.64 = 204.05 , and the elevations at 3 , 4 , 5 ...
... move the instrument to C , and , sighting back to sta . 2 , let the rod standing on the pin read 2.64 . This makes the new " instrument height ” at C = 201.41 , the height of sta . 2 , 2.64 = 204.05 , and the elevations at 3 , 4 , 5 ...
Página 35
... Move the instrument to B , say 22.5 feet above grade . This elevation , if the cutting on that side be deemed to equal it , corresponds to a distance out of 9 feet for road - bed added to ( 22.54 ) for slope ; total , 14.6 feet . The ...
... Move the instrument to B , say 22.5 feet above grade . This elevation , if the cutting on that side be deemed to equal it , corresponds to a distance out of 9 feet for road - bed added to ( 22.54 ) for slope ; total , 14.6 feet . The ...
Página 42
... moved slowly forward , the suc- cessive oppositions of the scale marks will indicate successive advances of the vernier , each equal to the one - thousandth part of a foot . The marginal example reads 6.217 = six feet , two - tenths ...
... moved slowly forward , the suc- cessive oppositions of the scale marks will indicate successive advances of the vernier , each equal to the one - thousandth part of a foot . The marginal example reads 6.217 = six feet , two - tenths ...
Página 43
... moved slowly half a degree on the limb , its several subdivision marks , one after an- other in arithmetical succession , will be seen to line with marks of the limb until the thirtieth is reached , when zero will be found to have ...
... moved slowly half a degree on the limb , its several subdivision marks , one after an- other in arithmetical succession , will be seen to line with marks of the limb until the thirtieth is reached , when zero will be found to have ...
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