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 |
Αναζήτηση στο βιβλίο
Αποτελέσματα 1 - 5 από τα 16.
Σελίδα 141
... 1B ; T of C - B = 3 ° 44 ′ . 55 ° + 3 ° 44 ' 58 ° 44 ′ - C . 55 ° -3 ° -44-51 ° 16 ' B. 2. As S. C : AB :: S. A : BC , = 277 PROB III . fig 89 . B Suppose ABC a triangular piece of ground , which by OF DISTANCES . 141- PROB. II. ...
... 1B ; T of C - B = 3 ° 44 ′ . 55 ° + 3 ° 44 ' 58 ° 44 ′ - C . 55 ° -3 ° -44-51 ° 16 ' B. 2. As S. C : AB :: S. A : BC , = 277 PROB III . fig 89 . B Suppose ABC a triangular piece of ground , which by OF DISTANCES . 141- PROB. II. ...
Σελίδα 142
... piece of ground , which by an old survey we find to be thus : AB 260 , AC 160 , BC 150 perches ; the mearing lines , AC and BC , are destroyed , or plowed down , and the line AB , only remaining . What angles must be set off at A and B ...
... piece of ground , which by an old survey we find to be thus : AB 260 , AC 160 , BC 150 perches ; the mearing lines , AC and BC , are destroyed , or plowed down , and the line AB , only remaining . What angles must be set off at A and B ...
Σελίδα 160
... piece of ground , by going round it , and the method of taking the angles of the field , by the chain only . fig . 92 . d f 6 E F h 5 320 B Let ABCDEFG be a piece of ground to be survey- ed : beginning at the point A , let one chain be ...
... piece of ground , by going round it , and the method of taking the angles of the field , by the chain only . fig . 92 . d f 6 E F h 5 320 B Let ABCDEFG be a piece of ground to be survey- ed : beginning at the point A , let one chain be ...
Σελίδα 163
... ground may be surveyed by a two - pole chain . PROB . II . To take a survey of a piece of ground from any point within it , from whence all the angles can be seen ; by the chain only . Let a mark be fixed at any point in the ground , as ...
... ground may be surveyed by a two - pole chain . PROB . II . To take a survey of a piece of ground from any point within it , from whence all the angles can be seen ; by the chain only . Let a mark be fixed at any point in the ground , as ...
Σελίδα 194
... piece of ground . 1. Multiply the base in perches , into the perpen- dicular in perches ( or square the base ) the product will be the content in perches and because 160 per- ches make an acre , it must thence follow that Any area or ...
... piece of ground . 1. Multiply the base in perches , into the perpen- dicular in perches ( or square the base ) the product will be the content in perches and because 160 per- ches make an acre , it must thence follow that Any area or ...
Άλλες εκδόσεις - Προβολή όλων
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