A Treatise on Practical Surveying: Which is Demonstrated from Its First Principles, Wherein Every Thing that is Useful and Curious in that Art, is Fully Considered and ExplainedF. Lucas, Jun. and Joseph Cushing, 1816 - 472 σελίδες |
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Σελίδα xi
... field - notes , or by calculation than any hitherto published ; and I venture to assert that it is impossible ( from the nature of right - lined figures ) that any me- thod or methods more concise than this , can be investi- gated . To ...
... field - notes , or by calculation than any hitherto published ; and I venture to assert that it is impossible ( from the nature of right - lined figures ) that any me- thod or methods more concise than this , can be investi- gated . To ...
Σελίδα 164
... field , by the chain only . 6 F Ar . 97 . Let ABCDEFG be a piece of ground to be survey . ed : beginning at the point A , let one chain be laid in a direct line from A towards G , where let a peg be left , as atc ; and again the like ...
... field , by the chain only . 6 F Ar . 97 . Let ABCDEFG be a piece of ground to be survey . ed : beginning at the point A , let one chain be laid in a direct line from A towards G , where let a peg be left , as atc ; and again the like ...
Σελίδα 165
... field - book , in the second column , under angles , in a line with a station No. 2. ; and in the same line , under the title of distances in the third co- lumn , let the measure of the line BC , in chains and links , be inserted ...
... field - book , in the second column , under angles , in a line with a station No. 2. ; and in the same line , under the title of distances in the third co- lumn , let the measure of the line BC , in chains and links , be inserted ...
Σελίδα 167
... field book . No. Sta . Angle . Dist . Ch . L. Thus , Ch . L. 1.03 1 1.09 17.65 For when an angle is very obtuse , the chord line , as ed will be nearly equal to the radii Ac and Ad ; so if the arc ced be swept , and the chord line cd ...
... field book . No. Sta . Angle . Dist . Ch . L. Thus , Ch . L. 1.03 1 1.09 17.65 For when an angle is very obtuse , the chord line , as ed will be nearly equal to the radii Ac and Ad ; so if the arc ced be swept , and the chord line cd ...
Σελίδα 168
... field book . Thus , Remarks . No. Radii . Distances Ch . L. Ch . 120.00 L. 17.65 221.72 18.50 3 21.74 28.00 4 25.34 20.00 5 17.20 14.83 6. 29.62 19.41 7 21.20 24.53 Close at the first station . If any line of the field be inaccessible ...
... field book . Thus , Remarks . No. Radii . Distances Ch . L. Ch . 120.00 L. 17.65 221.72 18.50 3 21.74 28.00 4 25.34 20.00 5 17.20 14.83 6. 29.62 19.41 7 21.20 24.53 Close at the first station . If any line of the field be inaccessible ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2021 |
Συχνά εμφανιζόμενοι όροι και φράσεις
20 perches 50 Dist ABCD acres altitude annexed Answer base bearing bisect blank line centre chains and links chord circle circumferentor Co-secant Secant Co-sine Co-tang column contained cyphers decimal decimal fraction Dep Lat difference divided divisor draw east edge EXAMPLE feet field-book figures four-pole chains given angle half the sum height Hence hypothenuse inches instrument latitude length logarithm magnetical measure meridian distance multiplied needle number of degrees object off-sets parallel parallelogram perpendicular piece of ground plane Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM sect semicircle side sights sine square root stationary distance sun's suppose survey taken tance Tang tangent thence theo theodolite THEOREM thro trapezium triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence