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 25
Página 14
... added . • Log . sine 40 ° 26 ' 28 " 9.811952 69 9.812021 5. If the arc is greater than 90 ° , find the required function of its supplement . Thus the logarithmic tangent of 118 ° 18 ′ 25 " , is equivalent to that of its supplement , or ...
... added . • Log . sine 40 ° 26 ' 28 " 9.811952 69 9.812021 5. If the arc is greater than 90 ° , find the required function of its supplement . Thus the logarithmic tangent of 118 ° 18 ′ 25 " , is equivalent to that of its supplement , or ...
Página 16
... adding the arithmetical complement of the logarithm of the first term to the logarithms of the other two , to obtain that of the fourth . 2. There are three distinct cases in which separate rules are required . CASE I. 3. When a side ...
... adding the arithmetical complement of the logarithm of the first term to the logarithms of the other two , to obtain that of the fourth . 2. There are three distinct cases in which separate rules are required . CASE I. 3. When a side ...
Página 17
... added to half their difference will give the larger of them , and half their sum diminished by half their difference ... Adding half the difference to half the sum , 30 ° 346 ° 08136 ° 43 ' , the larger angle , B. Deducting half the ...
... added to half their difference will give the larger of them , and half their sum diminished by half their difference ... Adding half the difference to half the sum , 30 ° 346 ° 08136 ° 43 ' , the larger angle , B. Deducting half the ...
Página 18
... added to half the said difference gives the greater segment , and diminished by it gives the less ; thus , by means of the perpendicular from the vertical angle , the original triangle is divided into two , each of which falls under the ...
... added to half the said difference gives the greater segment , and diminished by it gives the less ; thus , by means of the perpendicular from the vertical angle , the original triangle is divided into two , each of which falls under the ...
Página 27
... adding the " back- sight " to the elevation of the point upon which the rod stands for that purpose : from the " instrument height " thus found deduct the " foresights , " severally , in order to find the eleva- tions of the points at ...
... adding the " back- sight " to the elevation of the point upon which the rod stands for that purpose : from the " instrument height " thus found deduct the " foresights , " severally , in order to find the eleva- tions of the points at ...
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