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 vi
... examples given will prove adequate , directly or indirectly , to all contingencies . No attempt has been made to swell the bulk of the volume with imaginary cases ; the object being , not to provide barren mathematical exercises , but ...
... examples given will prove adequate , directly or indirectly , to all contingencies . No attempt has been made to swell the bulk of the volume with imaginary cases ; the object being , not to provide barren mathematical exercises , but ...
Página 4
... example , p . 8. ) 4. The characteristic of the logarithm of a mixed number is the same as that of its entire part . Thus the mixed number 74.103 lies between 10 and 100 ; hence its logarithm lies be- tween 1 and 2 , as does the ...
... example , p . 8. ) 4. The characteristic of the logarithm of a mixed number is the same as that of its entire part . Thus the mixed number 74.103 lies between 10 and 100 ; hence its logarithm lies be- tween 1 and 2 , as does the ...
Página 5
... of the factors , and take their sum ; then find the number corresponding to the resulting logarithm , Example . Find the continued product of 3.902 , 597.16 and it will be the product required . MANNER OF USING THE TABLEs . 5.
... of the factors , and take their sum ; then find the number corresponding to the resulting logarithm , Example . Find the continued product of 3.902 , 597.16 and it will be the product required . MANNER OF USING THE TABLEs . 5.
Página 6
... Example . Find the continued product of 3.902 , 597.16 , and 0.0314728 . Log . 3.902 . Log . 597.16 . Log ... Example 1 . Operation . · • • 4.383151 · • 3.659631 0.723520 = log . 5.29078 , the quotient . Divide 0.7438 by 12.9476 ...
... Example . Find the continued product of 3.902 , 597.16 , and 0.0314728 . Log . 3.902 . Log . 597.16 . Log ... Example 1 . Operation . · • • 4.383151 · • 3.659631 0.723520 = log . 5.29078 , the quotient . Divide 0.7438 by 12.9476 ...
Página 7
... Example . Multiply 358884 by 5672 , and divide the product by 89721 . Log . 358884 Log . 5672 ( a . c . ) Log . 89721 Operation . • • 5.554954 • • · 3.753736 • 5.047106 4.355796 = log . 22688 , the result . The operation of subtracting ...
... Example . Multiply 358884 by 5672 , and divide the product by 89721 . Log . 358884 Log . 5672 ( a . c . ) Log . 89721 Operation . • • 5.554954 • • · 3.753736 • 5.047106 4.355796 = log . 22688 , the result . The operation of subtracting ...
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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