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
Página 18
... find a side . Call any one of the sides radius , and write become sines , tangents , cosines , or the like upon it the word " radius . " Observe whether the other sides 18 RIGHT - ANGLED PLANE TRIANGLES . Right-angled plane triangles.
... find a side . Call any one of the sides radius , and write become sines , tangents , cosines , or the like upon it the word " radius . " Observe whether the other sides 18 RIGHT - ANGLED PLANE TRIANGLES . Right-angled plane triangles.
Página 27
... observation . 4. It thus appears how simple is the rule of levelling , namely : Find the " instrument height " by adding the " back- sight " to the elevation of the point upon which the rod stands for that purpose : from the ...
... observation . 4. It thus appears how simple is the rule of levelling , namely : Find the " instrument height " by adding the " back- sight " to the elevation of the point upon which the rod stands for that purpose : from the ...
Página 29
... observation . I = the height of place of observation above or LEVELLING . 29 To find differences in elevation by means of barometer Heights by the thermometer.
... observation . I = the height of place of observation above or LEVELLING . 29 To find differences in elevation by means of barometer Heights by the thermometer.
Página 30
... observation above or below the sea in feet . H = 513 T + T2 . Example . -4 ° . - T = 212 ° - 208 ° H = ( 513 × 4 ) + 42 = 2068 feet . - XII . SETTING SLOPE STAKES . 1. Like swallowing , this is more easily done than described . To no ...
... observation above or below the sea in feet . H = 513 T + T2 . Example . -4 ° . - T = 212 ° - 208 ° H = ( 513 × 4 ) + 42 = 2068 feet . - XII . SETTING SLOPE STAKES . 1. Like swallowing , this is more easily done than described . To no ...
Página 32
... observe after a little practice , since the ground ascends thence toward the centre line , that the side stake must ... observation , will place a slope divining this true position , and , becoming meanwhile quick in 722 SETTING SLOPE ...
... observe after a little practice , since the ground ascends thence toward the centre line , that the side stake must ... observation , will place a slope divining this true position , and , becoming meanwhile quick in 722 SETTING SLOPE ...
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