Surveying, as Practiced by Civil Engineers and Surveyors ...: Intended as a Handbook for Field and Office Use, Also as a Textbook for Students |
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Page 5
... fixed upon an iron - shod ranging rod which is inserted into the ground on the chain line at the point where it is desired to set off an offset line at right angles to the chain line . It is turned round until one pair of opposite slits ...
... fixed upon an iron - shod ranging rod which is inserted into the ground on the chain line at the point where it is desired to set off an offset line at right angles to the chain line . It is turned round until one pair of opposite slits ...
Page 17
... fixed by means of distances or " offsets " as they are called , measured from and at right angles to the chain lines AB , BC , CD , and DA . These offsets are measured with an offset staff or a tape , from the chain , which is laid on ...
... fixed by means of distances or " offsets " as they are called , measured from and at right angles to the chain lines AB , BC , CD , and DA . These offsets are measured with an offset staff or a tape , from the chain , which is laid on ...
Page 42
... fixed by the triangle Aab and the corner в by the triangle cвd , while the lines ba and CB being produced , give the directions of the sides of the house , which should then be measured all round . This is much quicker than taking ...
... fixed by the triangle Aab and the corner в by the triangle cвd , while the lines ba and CB being produced , give the directions of the sides of the house , which should then be measured all round . This is much quicker than taking ...
Page 53
... one arm is a needle point with weight which is fixed into the paper . At the end of the other arm there is a tracing point . The instrument when in use rests on the roller , the weighted needle , and the tracing point . In AREAS . 53.
... one arm is a needle point with weight which is fixed into the paper . At the end of the other arm there is a tracing point . The instrument when in use rests on the roller , the weighted needle , and the tracing point . In AREAS . 53.
Page 57
... fixed by scaling its rectangular co - ordinates , one of the corners of a square being taken as the origin . For this purpose the proportional compasses shown in Fig . 40 are useful . To avoid spoiling the plotted survey , it is a good ...
... fixed by scaling its rectangular co - ordinates , one of the corners of a square being taken as the origin . For this purpose the proportional compasses shown in Fig . 40 are useful . To avoid spoiling the plotted survey , it is a good ...
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Surveying, As Practiced by Civil Engineers and Surveyors ...: Intended As a ... John Whitelaw, Jr. No preview available - 2015 |
Common terms and phrases
accuracy accurate adjustment altitude aneroid axis azimuth back sight barometer bench marks bubble tube calculated centre line chain line Chapter clinometer cloth collimation line compass contours correct cross hairs cross sections Crown 8vo curve D. K. CLARK deflection angle difference distance elevation Engineer equal Feet fence field book fixed fore sight formulæ given gradient graduated Greenwich mean ground Handbook height horizontal Illustrations instrument latitude length longitude magnetic bearings mean measured meridian method metres miles millimetres minutes Nautical Almanac object glass observed angle parallel perpendicular plane Plates plotted plumb line position Practical railway ranging rod right ascension scale screws sextant shown in Fig side slope spherical spirit level stadia hairs staff reading star station surface survey surveyor tacheometer Tacheometry taken tangent point tape telescope temperature theodolite traverse Treatise triangle Troughton & Simms tunnel vernier vertical angle wire
Popular passages
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