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 páginas |
Dentro del libro
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Página vii
... stationary distance being one chain ; which will be found as ready , by a little practice , and perhaps more exact , than those already published . Truths call upon me to acknowledge , that the me- thods by calculation , herein set ...
... stationary distance being one chain ; which will be found as ready , by a little practice , and perhaps more exact , than those already published . Truths call upon me to acknowledge , that the me- thods by calculation , herein set ...
Página 131
... Stationary distance , 87 feet . Second angle , 37 ° 00 ' . The height of the tower CD , is required . Geometrically . Upon an infinite blank line , lay off the stationary distance 87 , from A to B ; from B set off your first ; and from ...
... Stationary distance , 87 feet . Second angle , 37 ° 00 ' . The height of the tower CD , is required . Geometrically . Upon an infinite blank line , lay off the stationary distance 87 , from A to B ; from B set off your first ; and from ...
Página 135
... Stationary distance AB 104 feet . Angle to the top 48 ° 30 ' DC required . Geometrically . On an indefinite blank line , lay the stationary dis- fance AB 104 feet ; from A , set off the second , and from B , the third given angle ; and ...
... Stationary distance AB 104 feet . Angle to the top 48 ° 30 ' DC required . Geometrically . On an indefinite blank line , lay the stationary dis- fance AB 104 feet ; from A , set off the second , and from B , the third given angle ; and ...
Página 136
... Stationary distance AB = 104 feet . Second station . Angle to the foot EAD = 24 ° 30 . Angle to the top EAC - 32 ° 00 ' . Let DC and DE be required . The geometrical construction of this and the next problem are omitted : as what has ...
... Stationary distance AB = 104 feet . Second station . Angle to the foot EAD = 24 ° 30 . Angle to the top EAC - 32 ° 00 ' . Let DC and DE be required . The geometrical construction of this and the next problem are omitted : as what has ...
Página 147
... stationary distance , or mearings of ground , are measured either by Gunter's chain of four poles or perches , which consist of 100 links ; ( and this is the most natural division ) or by one of 50 links , which contains two poles or ...
... stationary distance , or mearings of ground , are measured either by Gunter's chain of four poles or perches , which consist of 100 links ; ( and this is the most natural division ) or by one of 50 links , which contains two poles or ...
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A Treatise of Practical Surveying: Which is Demonstrated From Its First ... Robert Gibson Sin vista previa disponible - 2021 |
Términos y frases comunes
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