The Field Engineer: A Handy Book of Practice in the Survey, Location, and Track-work of Railroads; Containing a Large Collection of Rules and Tables, Original and Selected, Applicable to Both the Standard and the Narrow Gauge, and Prepared with Special Reference to the Wants of the Young EngineerD. Van Nostrand Company, 1890 - 339 páginas |
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Página x
... distance : i.e. , the distance from the P. I. to the point where a curve merges in the tangent . P. C. Point of curve : the stake - mark at the beginning of a curve . P. T. Point of tangent : the stake - mark at the end of a curve ...
... distance : i.e. , the distance from the P. I. to the point where a curve merges in the tangent . P. C. Point of curve : the stake - mark at the beginning of a curve . P. T. Point of tangent : the stake - mark at the end of a curve ...
Página 11
... distance from one extremity of the arc enclosing it , to the diameter , through the other extrem- ity . Thus PM is ... tangent of an angle is a right line which touches the enclosing arc at one extremity , and is limited by a right line drawn ...
... distance from one extremity of the arc enclosing it , to the diameter , through the other extrem- ity . Thus PM is ... tangent of an angle is a right line which touches the enclosing arc at one extremity , and is limited by a right line drawn ...
Página 40
... distance , and level in the opposite direction . Unclamp . Re- volve the instrument horizontally on its spindle half ... tangent screw . Repeat until means of the lateral capstan head screws on the barrel , and 40 THE TRANSIT .
... distance , and level in the opposite direction . Unclamp . Re- volve the instrument horizontally on its spindle half ... tangent screw . Repeat until means of the lateral capstan head screws on the barrel , and 40 THE TRANSIT .
Página 46
... distance in feet from the point of observation to ply the natural tangent of the azimuth , given in Table III . , by 46 MISCELLANEOUS .
... distance in feet from the point of observation to ply the natural tangent of the azimuth , given in Table III . , by 46 MISCELLANEOUS .
Página 50
... tangential angle , subtended by either chord . 9. If F K be made equal to FH , and HN be made equal to HL , HK is called the tangential distance , and LN the deflec- tion distance . 10. The exterior angle E H N at the circumference ...
... tangential angle , subtended by either chord . 9. If F K be made equal to FH , and HN be made equal to HL , HK is called the tangential distance , and LN the deflec- tion distance . 10. The exterior angle E H N at the circumference ...
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Términos y frases comunes
A. D. MIN adjustment apex distance backsight called central angle CHORD column Cosine 1 Sine cross-hair Cube Roots decimal deflection distance degree of curvature degree of curve Diff divided engineer equal error Example feet figure fixed FOOD foregoing formation slope frog angle gauge of track gauge side ground Hence inches index angle instrument height intersection angle located logarithm Main frog dist mantissa mark measure method metres metric curve middle frog middle ordinate middle point minutes multiplied natural sine number corresponding observation opposite outer rail parallel perpendicular plane triangle Polaris quotient radii radius range REVERSED CURVE rule Sine 1 Cotang Square Roots sub-chord subtended Subtract Suppose switch-rail Table XVI tabular tance Tang tangential angle tangential distance telescope terminal tangent tion toe of switch transitman Trigonometry turnout curve vernier vertical ΙΟ