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
... base , having a small nail sometimes driven flush in the top of it , and a blaze opposite , on which the eleva- tion is marked with kiel . T. P. Turning - point : usually marked in the field - book . P. I. Point of intersection : as of ...
... base , having a small nail sometimes driven flush in the top of it , and a blaze opposite , on which the eleva- tion is marked with kiel . T. P. Turning - point : usually marked in the field - book . P. I. Point of intersection : as of ...
Página 3
... base of the system . In the common system , this base is 10 . It follows from the above , that the logarithm of any power of 10 is equal to the exponent of that power . If , therefore , a number is an exact power of 10 , its logarithm ...
... base of the system . In the common system , this base is 10 . It follows from the above , that the logarithm of any power of 10 is equal to the exponent of that power . If , therefore , a number is an exact power of 10 , its logarithm ...
Página 15
... base . Also , as the sine of half the difference of the angles at the base is to the sine of half their sum , so is the difference of the sides about the vertical angle to the third side , or base . 5. In any plane triangle , as the base ...
... base . Also , as the sine of half the difference of the angles at the base is to the sine of half their sum , so is the difference of the sides about the vertical angle to the third side , or base . 5. In any plane triangle , as the base ...
Página 18
... base ; then say , conformably with proposition 5 , - As the base is to the sum of the two other sides , So is the difference of those sides to the difference of the segments of the base . Half the base added to half the said difference ...
... base ; then say , conformably with proposition 5 , - As the base is to the sum of the two other sides , So is the difference of those sides to the difference of the segments of the base . Half the base added to half the said difference ...
Página 34
... base of 153 — 1.0 = 14.3 feet . But the rod at that point is only 11 feet , to which , if 1 foot , the distance of instrument below grade , be added , the height of embankment would be 12 feet . He may then , as in the case of the upper ...
... base of 153 — 1.0 = 14.3 feet . But the rod at that point is only 11 feet , to which , if 1 foot , the distance of instrument below grade , be added , the height of embankment would be 12 feet . He may then , as in the case of the upper ...
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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