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 27
Página 40
... STRAIGHT LINE . Try , first , by reference to the corner of a well - built house , or to a plumb - line , whether the hair be truly vertical . If it is not , loosen the four small capstan head screws on the outside of the barrel ...
... STRAIGHT LINE . Try , first , by reference to the corner of a well - built house , or to a plumb - line , whether the hair be truly vertical . If it is not , loosen the four small capstan head screws on the outside of the barrel ...
Página 42
... straight edge into ten equal parts , and that on another straight edge a space equal in length to nine of these parts is divided also into ten equal parts . The sub- divisions of the latter scale will then each be nine - tenths as large ...
... straight edge into ten equal parts , and that on another straight edge a space equal in length to nine of these parts is divided also into ten equal parts . The sub- divisions of the latter scale will then each be nine - tenths as large ...
Página 52
... straight lines intersecting at D. Lay off equal distances , D A , D B ; erect perpendiculars at A and L M K H B N and G A or G B , the radius , R. chord of 100 feet D , as before . B , meeting at G , and con- nect A B , D G. From the ...
... straight lines intersecting at D. Lay off equal distances , D A , D B ; erect perpendiculars at A and L M K H B N and G A or G B , the radius , R. chord of 100 feet D , as before . B , meeting at G , and con- nect A B , D G. From the ...
Página 81
... supplied by the company , are not misused . His field equipment should always added a straight , round staff , five or six include a hand - level and a pocket - compass ; to these may be SUGGESTIONS CONCERNING FIELD - WORK . 81.
... supplied by the company , are not misused . His field equipment should always added a straight , round staff , five or six include a hand - level and a pocket - compass ; to these may be SUGGESTIONS CONCERNING FIELD - WORK . 81.
Página 82
... straight , round staff , five or six feet long , steel pointed ; it will be found exceedingly useful . If without a topographer , he should make sketches of irregu- lar ground , of streams , buildings , roads , and the like , to help in ...
... straight , round staff , five or six feet long , steel pointed ; it will be found exceedingly useful . If without a topographer , he should make sketches of irregu- lar ground , of streams , buildings , roads , and the like , to help in ...
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