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 55
... column of Table XVI . the number corresponding to the given angle I , and divide that tabular number by the length of the given part ; the quotient will be D , in degrees and decimals . Example 1 . Given T587 , I = = 22 ° 26 ' ; to find ...
... column of Table XVI . the number corresponding to the given angle I , and divide that tabular number by the length of the given part ; the quotient will be D , in degrees and decimals . Example 1 . Given T587 , I = = 22 ° 26 ' ; to find ...
Página 71
... column must correspond with the central angle due to the length of curve to that point ; and at the P. T. that number must correspond with the total central angle . The work can thus be checked with facility during its progress , and ...
... column must correspond with the central angle due to the length of curve to that point ; and at the P. T. that number must correspond with the total central angle . The work can thus be checked with facility during its progress , and ...
Página 83
... column , transcribe the chain - book , and , on location , record the apex distances also in the column of remarks . On survey , do not erase from the field - book the notes of abandoned lines . Simply cancel , and mark them " aban ...
... column , transcribe the chain - book , and , on location , record the apex distances also in the column of remarks . On survey , do not erase from the field - book the notes of abandoned lines . Simply cancel , and mark them " aban ...
Página 95
... column to be 2,193.2 feet ; on a 6 ° curve it is therefore 365.5 feet , one - half of which , = 182.75 feet , = = DC , and one - half of 22 ° 04 ' 11 ° 02 ' , the angle covered by the arc B C. Thus angle at C = 11 ° 02 ' , and 406.85 ...
... column to be 2,193.2 feet ; on a 6 ° curve it is therefore 365.5 feet , one - half of which , = 182.75 feet , = = DC , and one - half of 22 ° 04 ' 11 ° 02 ' , the angle covered by the arc B C. Thus angle at C = 11 ° 02 ' , and 406.85 ...
Página 96
... column of Table XVI . , where it is found opposite 10 ° 46 ' . By moving then to F , deflecting 10 ° 46 ' R , and measuring F C = 90 feet , the point C is fixed on the second curve . 3. Should unexpected obstacles be met in carrying out ...
... column of Table XVI . , where it is found opposite 10 ° 46 ' . By moving then to F , deflecting 10 ° 46 ' R , and measuring F C = 90 feet , the point C is fixed on the second curve . 3. Should unexpected obstacles be met in carrying out ...
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