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 14
... remainder by the corresponding tabular difference . The quotient will be seconds , which must be added to the degrees and minutes set aside , in the case of a sine or tangent , and subtracted in the case of a cosine or cotangent ...
... remainder by the corresponding tabular difference . The quotient will be seconds , which must be added to the degrees and minutes set aside , in the case of a sine or tangent , and subtracted in the case of a cosine or cotangent ...
Página 17
... remainder will be the sum of the other two angles . Then , by proposition 3 , - As the sum of the given sides is to their difference , So is the tangent of half the sum of the remaining angles to the tangent of half their difference ...
... remainder will be the sum of the other two angles . Then , by proposition 3 , - As the sum of the given sides is to their difference , So is the tangent of half the sum of the remaining angles to the tangent of half their difference ...
Página 69
... remainder will be the required index angle . Thus the index angle which established stake 9 was 33 ° 45 ' . Double this angle will be 67 ° 30 ′ ; subtracting 18 ° 45 ' , the reading in tangent at the last turning - point , we have 48 ...
... remainder will be the required index angle . Thus the index angle which established stake 9 was 33 ° 45 ' . Double this angle will be 67 ° 30 ′ ; subtracting 18 ° 45 ' , the reading in tangent at the last turning - point , we have 48 ...
Página 99
... remainder is the natural cosine of the angle of re- treat along the located curve to the required P. C. C. Example . 3. A 3 ° curve on the ground , to find the P. C. C. of a 5 ° curve striking 27 feet to the right . Here D = 27 ; R ...
... remainder is the natural cosine of the angle of re- treat along the located curve to the required P. C. C. Example . 3. A 3 ° curve on the ground , to find the P. C. C. of a 5 ° curve striking 27 feet to the right . Here D = 27 ; R ...
Página 128
... remainder is the angle y = 4 ° 18 ' . - Multiplied by sin . x , 48 ° 11 ' = CD Finally , IC 86 • · log . 1.934498 • log . 9.872321 log . 1.806819 And C D divided by sin . y , 4 ° 18 ' • log . 8.874938 • · log . 2.931881 = CO = R = say ...
... remainder is the angle y = 4 ° 18 ' . - Multiplied by sin . x , 48 ° 11 ' = CD Finally , IC 86 • · log . 1.934498 • log . 9.872321 log . 1.806819 And C D divided by sin . y , 4 ° 18 ' • log . 8.874938 • · log . 2.931881 = CO = R = say ...
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