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 xi
... . · Correction for the earth's curvature and refrac- tion · · To find differences in elevation by means of the barometer Heights by the thermometer 25 25 285 26 28 8835 29 29 xi XII . Setting slope stakes XIII . Vertical curves XIV.
... . · Correction for the earth's curvature and refrac- tion · · To find differences in elevation by means of the barometer Heights by the thermometer 25 25 285 26 28 8835 29 29 xi XII . Setting slope stakes XIII . Vertical curves XIV.
Página 5
... difference , multiply this by the decimal part , and add the product to the mantissa just found . The principle employed is that the differences of numbers are proportional to the differences of their logarithms , when these differences ...
... difference , multiply this by the decimal part , and add the product to the mantissa just found . The principle employed is that the differences of numbers are proportional to the differences of their logarithms , when these differences ...
Página 11
... the dif- ference between that C M N AMT M angle and a right angle . D 4. The supplement of an angle is the difference between that angle and two right angles . 11 5. Instead of employing the arcs themselves , certain func- Definitions.
... the dif- ference between that C M N AMT M angle and a right angle . D 4. The supplement of an angle is the difference between that angle and two right angles . 11 5. Instead of employing the arcs themselves , certain func- Definitions.
Página 14
... 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 . Example . Find the arc corresponding to log ...
... 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 . Example . Find the arc corresponding to log ...
Página 15
... 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 about the vertical angle to the third side , or base . Also , as the ...
... 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 about the vertical angle to the third side , or base . Also , as the ...
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