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 |
Dentro del libro
Resultados 1-5 de 17
Página 29
... tance would really be 60 feet above it . Transposing the equa- tion we have D = √ A ÷ 0.6 . In this form it is applicable to the determination of distances at sea . The Peak of Teneriffe , for example , 16,000 feet high , should be ...
... tance would really be 60 feet above it . Transposing the equa- tion we have D = √ A ÷ 0.6 . In this form it is applicable to the determination of distances at sea . The Peak of Teneriffe , for example , 16,000 feet high , should be ...
Página 47
... tance from said northern range mark , square right or left , to a point in the true meridian passing through the point of ob- servation . If the western elongation was observed , set off the calculated distance eastward from the ...
... tance from said northern range mark , square right or left , to a point in the true meridian passing through the point of ob- servation . If the western elongation was observed , set off the calculated distance eastward from the ...
Página 65
... tances . 6. In the example we are treating , the tangential distance for the whole chord of 66 feet has been found to ... tance LV is to the whole tangential distance due to the 66- feet chord , as the sub - chord is to the whole chord ...
... tances . 6. In the example we are treating , the tangential distance for the whole chord of 66 feet has been found to ... tance LV is to the whole tangential distance due to the 66- feet chord , as the sub - chord is to the whole chord ...
Página 66
... tance of exact conformity to the project , and the like , which warrant its omission ; but where these conditions do not obtain or are not prohibitory , and a snug fit is desirable , time will usually be saved by fixing the P. I. It ...
... tance of exact conformity to the project , and the like , which warrant its omission ; but where these conditions do not obtain or are not prohibitory , and a snug fit is desirable , time will usually be saved by fixing the P. I. It ...
Página 74
... tances AE , BF , ranging clear of the obstacle . B G H Place the transit at E or F , fix points G and H on the forward range , and , rectangularly to these points , establish others on the forward range of the centre line at C and D ...
... tances AE , BF , ranging clear of the obstacle . B G H Place the transit at E or F , fix points G and H on the forward range , and , rectangularly to these points , establish others on the forward range of the centre line at C and D ...
Otras ediciones - Ver todas
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