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 v
... circle , are tools of the craft in constant use ; ready han- dling of them is an indispensable condition of excellence . Be not discouraged by obscurities and difficulties at the outset ; light will gradually break on the scrutinizing ...
... circle , are tools of the craft in constant use ; ready han- dling of them is an indispensable condition of excellence . Be not discouraged by obscurities and difficulties at the outset ; light will gradually break on the scrutinizing ...
Página 11
... circle included between its sides ; the centre of the circle being at the vertex , and its radius being 1. The circle , for convenience , is divided into 360 equal parts called degrees ; 90 of these parts are included in a quadrant ...
... circle included between its sides ; the centre of the circle being at the vertex , and its radius being 1. The circle , for convenience , is divided into 360 equal parts called degrees ; 90 of these parts are included in a quadrant ...
Página 12
... circle are not treated in this book , for the reasons that they seldom occur in field practice , and that any young engineer , conversant with the methods herein given , will , it is presumed , have no difficulty in band- ling such ...
... circle are not treated in this book , for the reasons that they seldom occur in field practice , and that any young engineer , conversant with the methods herein given , will , it is presumed , have no difficulty in band- ling such ...
Página 40
... circle plates be out of parallel , should one or the other be sprung , a defect shown by a slight rocking motion when the rims are pinched alternately on op- posite sides , - the instrument must be sent to the shop for · repair . This ...
... circle plates be out of parallel , should one or the other be sprung , a defect shown by a slight rocking motion when the rims are pinched alternately on op- posite sides , - the instrument must be sent to the shop for · repair . This ...
Página 41
... circle . There gently stay it in position by means of a small wooden block , an ivory die , or the like . Observe where the opposite end strikes . If between graduation lines , mark the precise spot with a sharp pencil . Turn the needle ...
... circle . There gently stay it in position by means of a small wooden block , an ivory die , or the like . Observe where the opposite end strikes . If between graduation lines , mark the precise spot with a sharp pencil . Turn the needle ...
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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