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 26
... vertical in the wye bearings as hand and eye can make them , and by reference to a plumb - line , or the corner of a well - built house , see if the vertical hair is out of true . If so , slightly loosen two opposite screws of the ...
... vertical in the wye bearings as hand and eye can make them , and by reference to a plumb - line , or the corner of a well - built house , see if the vertical hair is out of true . If so , slightly loosen two opposite screws of the ...
Página 30
... vertical . Thus a slope of 45 ° is " 1 to 1. " A slope of " 2 to 1 " has a horizontal reach of two feet to each foot vertical . The carriages of a stairway with twelve - inch treads and eight - inch risers would have a slope of " 1 to 1 ...
... vertical . Thus a slope of 45 ° is " 1 to 1. " A slope of " 2 to 1 " has a horizontal reach of two feet to each foot vertical . The carriages of a stairway with twelve - inch treads and eight - inch risers would have a slope of " 1 to 1 ...
Página 34
... vertical height of of 23 = 15.3 feet ; and , since the instrument is 1 foot be- low grade , to a rod at the supposed embankment base of 153 - 1.0 = = 14.3 feet . But the rod at that point is only 11 feet , to which , if 1 foot , the ...
... vertical height of of 23 = 15.3 feet ; and , since the instrument is 1 foot be- low grade , to a rod at the supposed embankment base of 153 - 1.0 = = 14.3 feet . But the rod at that point is only 11 feet , to which , if 1 foot , the ...
Página 35
... field record of the above is as follows : - = = STA . DIS . LEFT . CENTRE RIGHT . AREA . C.YDS . -6.9 0.01 2.5 328 40 18.3 -3.5 5.5 +2.5 +15.0 12.8 XIII . VERTICAL CURVES . DIAGRAM GIVING THE ORDINATES OF. SETTING SLOPE STAKES . 35.
... field record of the above is as follows : - = = STA . DIS . LEFT . CENTRE RIGHT . AREA . C.YDS . -6.9 0.01 2.5 328 40 18.3 -3.5 5.5 +2.5 +15.0 12.8 XIII . VERTICAL CURVES . DIAGRAM GIVING THE ORDINATES OF. SETTING SLOPE STAKES . 35.
Página 36
... VERTICAL CURVES . DIAGRAM GIVING THE ORDINATES OF A PARABOLA AT IN- TERVALS OF TO THE SPAN , THE MIDDLE ORDINATE BEING UNITY . .30 .18 12 11 10 8 .94 .97 .99 1.00 .83 .89 .75 .66 3 1. Suppose gradients descending right and left at an ...
... VERTICAL CURVES . DIAGRAM GIVING THE ORDINATES OF A PARABOLA AT IN- TERVALS OF TO THE SPAN , THE MIDDLE ORDINATE BEING UNITY . .30 .18 12 11 10 8 .94 .97 .99 1.00 .83 .89 .75 .66 3 1. Suppose gradients descending right and left at an ...
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