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 15
... half the sum of the angles at the base to the tangent of half their difference . 4. In any plane triangle , as the cosine of half the difference of the angles at the base is to the cosine of half their sum , so is the sum of the sides ...
... half the sum of the angles at the base to the tangent of half their difference . 4. In any plane triangle , as the cosine of half the difference of the angles at the base is to the cosine of half their sum , so is the sum of the sides ...
Página 17
... half their difference . Half the sum of the remaining angles added to half their difference will give the larger of them , and half their sum diminished by half their difference will give the lesser of them . The solution may be ...
... half their difference . Half the sum of the remaining angles added to half their difference will give the larger of them , and half their sum diminished by half their difference will give the lesser of them . The solution may be ...
Página 18
... Half the base 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 ...
... Half the base 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 ...
Página 24
... half - way around in the wyes . If the cross - hair selected for treatment then fails to coincide with the object , reduce the error one - half by means of the small capstan head screws at right angles to it on the telescope - barrel ...
... half - way around in the wyes . If the cross - hair selected for treatment then fails to coincide with the object , reduce the error one - half by means of the small capstan head screws at right angles to it on the telescope - barrel ...
Página 25
... half its movement by means of the small lateral capstan head screws at one end of the case . Return the telescope to its first position , level up again , and repeat the operation until the erroneous movement ceases . This adjustment ...
... half its movement by means of the small lateral capstan head screws at one end of the case . Return the telescope to its first position , level up again , and repeat the operation until the erroneous movement ceases . This adjustment ...
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