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 6-10 de 43
Página 52
... LENGTH , THE DEGREE , ETC. , OF A CURVE . 1. Let EB , AO be two straight lines intersecting at E. Lay off equal distances , EA , EB ; erect perpendiculars at A and B , meeting at G , and con- nect A B , EG . From the centre G , with ...
... LENGTH , THE DEGREE , ETC. , OF A CURVE . 1. Let EB , AO be two straight lines intersecting at E. Lay off equal distances , EA , EB ; erect perpendiculars at A and B , meeting at G , and con- nect A B , EG . From the centre G , with ...
Página 54
... LENGTH OF THE LONG CHORD C , THE VERSED SINE V , THE EXTERNAL SECANT S , OR THE TANGENT T. Take from the proper column in Table XVI . , the number corresponding to the intersection angle , and divide it by the degree of curvature : the ...
... LENGTH OF THE LONG CHORD C , THE VERSED SINE V , THE EXTERNAL SECANT S , OR THE TANGENT T. Take from the proper column in Table XVI . , the number corresponding to the intersection angle , and divide it by the degree of curvature : the ...
Página 55
... LENGTH OF THE CURVE . Divide I by D : the quotient will be the number of chord lengths in the curve . If the degree of curvature is a whole number , the more con- minutes , if any , in I to decimals of vcnient method of effecting the ...
... LENGTH OF THE CURVE . Divide I by D : the quotient will be the number of chord lengths in the curve . If the degree of curvature is a whole number , the more con- minutes , if any , in I to decimals of vcnient method of effecting the ...
Página 56
... lengths for the length of the curve . If the chords , as is usual , are each 100 feet long , the length of the curve in this case will be 689 feet . If the chord lengths were 50 feet each , the length of the curve would be half this ...
... lengths for the length of the curve . If the chords , as is usual , are each 100 feet long , the length of the curve in this case will be 689 feet . If the chord lengths were 50 feet each , the length of the curve would be half this ...
Página 57
... length being fixed , will vary inversely as the radii . Thus , in the foregoing example , 10,000 1,146 = 8.72 . 21. GIVEN ANY RADIUS R , AND CHORD C , TO FIND THE TAN- GENTIAL ANGLE T. The angle T is equal to D by construction ; for ...
... length being fixed , will vary inversely as the radii . Thus , in the foregoing example , 10,000 1,146 = 8.72 . 21. GIVEN ANY RADIUS R , AND CHORD C , TO FIND THE TAN- GENTIAL ANGLE T. The angle T is equal to D by construction ; for ...
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