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 6
... subtract the latter from the former ; then find the number corresponding to the resulting logarithm , and it will be ... subtraction , as in this case , is always to be performed in the algebraic way . 9. The operation of division ...
... subtract the latter from the former ; then find the number corresponding to the resulting logarithm , and it will be ... subtraction , as in this case , is always to be performed in the algebraic way . 9. The operation of division ...
Página 7
... subtracting it from 10 : it may be written out by commencing at the left hand , and subtracting each figure from 9 until the last significant figure is reached , which must be taken from 10. Thus 8.130456 is the arithmet- ical ...
... subtracting it from 10 : it may be written out by commencing at the left hand , and subtracting each figure from 9 until the last significant figure is reached , which must be taken from 10. Thus 8.130456 is the arithmet- ical ...
Página 13
... subtracted from the final result as have been added in the operation . This rule is illustrated in the following examples ... subtract it therefrom for the cosine or cotangent . Example . Operation . Log . sine 40 ° 26 ' Tabular Find the ...
... subtracted from the final result as have been added in the operation . This rule is illustrated in the following examples ... subtract it therefrom for the cosine or cotangent . Example . Operation . Log . sine 40 ° 26 ' Tabular Find the ...
Página 14
... Subtract the loga- rithm found in the table from the given logarithm , and divide the remainder by the corresponding ... subtracted in the case of a cosine or cotangent . Example . Find the arc corresponding to log . sin . 9.422248 ...
... Subtract the loga- rithm found in the table from the given logarithm , and divide the remainder by the corresponding ... subtracted in the case of a cosine or cotangent . Example . Find the arc corresponding to log . sin . 9.422248 ...
Página 29
... subtract the like proportion if the mean temperature be below 55 ° . When the upper thermometer reads highest , for " subtract and vice versa in the foregoing rule . 99 say " add , " 12. The naked formula , however , will usually be ...
... subtract the like proportion if the mean temperature be below 55 ° . When the upper thermometer reads highest , for " subtract and vice versa in the foregoing rule . 99 say " add , " 12. The naked formula , however , will usually be ...
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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