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
Resultados 6-10 de 43
Página 149
... survey , in a great measure , depends on his care and skill . In setting out to measure any stationary distance , the foreman of the chain carries with him 10 iron pegs pointed , each about 10 inches long ; and when he has stretched the ...
... survey , in a great measure , depends on his care and skill . In setting out to measure any stationary distance , the foreman of the chain carries with him 10 iron pegs pointed , each about 10 inches long ; and when he has stretched the ...
Página 154
... surveys are taken by a four - pole , and others by a two pole chain ; and as ground for houses is measured by feet , we will shew how to reduce one to the other , in the following problems . PROB . I. To reduce two - pole chains and ...
... surveys are taken by a four - pole , and others by a two pole chain ; and as ground for houses is measured by feet , we will shew how to reduce one to the other , in the following problems . PROB . I. To reduce two - pole chains and ...
Página 159
... how many two - pole chains ? 12 ) 9.00 ( .75 the decimal of 9 inches . 60 66 ) 217.75 ( 3.29 of four - pole chains , or 197 Ch . L. 655 6. 29. of the two - pole chains . 61 How to take a survey by the CHAIN only . OF THE CHAIN . 159.
... how many two - pole chains ? 12 ) 9.00 ( .75 the decimal of 9 inches . 60 66 ) 217.75 ( 3.29 of four - pole chains , or 197 Ch . L. 655 6. 29. of the two - pole chains . 61 How to take a survey by the CHAIN only . OF THE CHAIN . 159.
Página 160
... survey by the CHAIN only . PROB . 1 . To survey a 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 ...
... survey by the CHAIN only . PROB . 1 . To survey a 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 ...
Página 162
... survey of a town - land , or estate , it is sufficient to mention only the circumjacent town - lands , without the occupiers ' names ; but when a part only of a town- land is surveyed , then it is necessary to insert the person or ...
... survey of a town - land , or estate , it is sufficient to mention only the circumjacent town - lands , without the occupiers ' names ; but when a part only of a town- land is surveyed , then it is necessary to insert the person or ...
Otras ediciones - Ver todas
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