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 Cushing & Jewett, J. Robinson printer, 1822 - 326 σελίδες |
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Σελίδα 150
... field book , as will hereafter be shewn . If the distance exceeds 10 , 20 , 30 , & c . chains when the leader's pegs are all exhausted , the hinder chain- man , at the extremity of the 10 chains , delivers him all the pegs ; from whence ...
... field book , as will hereafter be shewn . If the distance exceeds 10 , 20 , 30 , & c . chains when the leader's pegs are all exhausted , the hinder chain- man , at the extremity of the 10 chains , delivers him all the pegs ; from whence ...
Σελίδα 160
... field - book , in the second column under the denomination of angles , in a line with sta- tion No. 1 .; and in the same line under the title of distances , in the third column , let the measure of the line AB in chains and links be ...
... field - book , in the second column under the denomination of angles , in a line with sta- tion No. 1 .; and in the same line under the title of distances , in the third column , let the measure of the line AB in chains and links be ...
Σελίδα 161
... 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 column , let the measure of the line BC , in chains and links , be inserted after the ...
... 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 column , let the measure of the line BC , in chains and links , be inserted after the ...
Σελίδα 163
... field book . Thus , • No. Sta 1 Angle . Ch . L. Dist . Ch . L. 1.09 $ 17.65 1.03 For when an angle is very obtuse , the chord line , as cd will be nearly equal to the radii Ac and Ad ; so if the arc ced be swept , and the chord line cd ...
... field book . Thus , • No. Sta 1 Angle . Ch . L. Dist . Ch . L. 1.09 $ 17.65 1.03 For when an angle is very obtuse , the chord line , as cd will be nearly equal to the radii Ac and Ad ; so if the arc ced be swept , and the chord line cd ...
Σελίδα 164
... field - book . Thus . Remarks . Radii : Distances No. Ch . L. L. 1 20.00 17.65 2 21.72 18.50 3 21.74 28.00 4 25.34 20.00 5 17.20 14.83 Ᏺ 29.62 19.41 21.20 24.53 Close at the first station . If any line of the field be inaccessible , as ...
... field - book . Thus . Remarks . Radii : Distances No. Ch . L. L. 1 20.00 17.65 2 21.72 18.50 3 21.74 28.00 4 25.34 20.00 5 17.20 14.83 Ᏺ 29.62 19.41 21.20 24.53 Close at the first station . If any line of the field be inaccessible , as ...
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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 ABCD acres altitude Answer base bearing blank line centre chains and links chord circle circumferentor Co-secant co-sine Co-tang column compass contained cyphers decimal decimal fraction difference Dist 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 measure meridian distance multiplied needle number of degrees object off-sets opposite parallel parallelogram perpendicular piece of ground plane polygon Portmarnock PROB proportion protractor quotient radius right angles right line scale of equal SCHOLIUM secant second station sect semicircle side sights sine square root stationary distance stationary line sun's suppose survey taken tang tangent thence theo theodolite THEOREM thro triangle ABC trigonometry true amplitude true azimuth two-pole chains vane variation whence