A Treatise on Surveying,: Containing the Theory and Practice: : to which is Prefixed a Perspicuous System of Plane Trigonometry. : The Whole Clearly Demonstrated and Illustrated by a Large Number of Appropriate Examples. : Particularly Adapted to the Use of SchoolsKimber and Sharpless, no. 93, Market Street, and John Richardson, no. 244, Market Street., 1820 - 206 páginas |
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Página 106
... distance from A to B. Now apply the centre of the protractor to the point B , with the arch turned toward the east , because the second bearing is easterly , and move it till the line AB produced cuts the first bearing 50 ° ; the ...
... distance from A to B. Now apply the centre of the protractor to the point B , with the arch turned toward the east , because the second bearing is easterly , and move it till the line AB produced cuts the first bearing 50 ° ; the ...
Página 107
... bearing is northerly or southerly , and towards E or W according as it is easterly or westerly , and number them 1 , 2 , 3 , 4 , & c . as in the figure . From A the centre of the circle , to 1 draw A 1 , on which lay the first distance ...
... bearing is northerly or southerly , and towards E or W according as it is easterly or westerly , and number them 1 , 2 , 3 , 4 , & c . as in the figure . From A the centre of the circle , to 1 draw A 1 , on which lay the first distance ...
Página 110
... distance , by means of the annexed Traverse Table . When the distance is any number of whole chains or perches not exceeding 100 . Find the given bearing at the top or bottom of the ta- ble according as it is less or more than 45 ...
... distance , by means of the annexed Traverse Table . When the distance is any number of whole chains or perches not exceeding 100 . Find the given bearing at the top or bottom of the ta- ble according as it is less or more than 45 ...
Página 111
... bearing N. 784 ° W . dist . 243 perches ? Per . Per . Per . Dist . 100 corresp . Lat . 20.36 and Dep . 97.90 100 43 - - Whole Dist . 243 20.36 97.90 8.76 42.10 Lat . 49.48N . Dep . 237.90Ww . When the distance is expressed by chains or ...
... bearing N. 784 ° W . dist . 243 perches ? Per . Per . Per . Dist . 100 corresp . Lat . 20.36 and Dep . 97.90 100 43 - - Whole Dist . 243 20.36 97.90 8.76 42.10 Lat . 49.48N . Dep . 237.90Ww . When the distance is expressed by chains or ...
Página 114
... distances , latitudes , depar- tures , meridian distances , and areas will be as in the table page 117 . Note 1. In a true survey the sum of the Thus the angle gAB is the first bearing , AB the first distance , and 114 MEASURING LAND .
... distances , latitudes , depar- tures , meridian distances , and areas will be as in the table page 117 . Note 1. In a true survey the sum of the Thus the angle gAB is the first bearing , AB the first distance , and 114 MEASURING LAND .
Términos y frases comunes
ABCD ABFD acres adjacent adjacent angles angle ABC angle opposite angled triangle azimuth base bearing and distance breadth Calculation centre Co-secant Secant Co-sine Co-tang column decimal degrees DEMONSTRATION departure corresponding diff difference of latitude Dist divide division line draw equal EXAMPLES feet figures find the angle find the area four-pole chains fourth term given angle given area given bearing given ratio given side John Gummere Lat Dep latitude and departure length logarithm measured meridian distance natural number off-sets parallel parallelogram perches perpendicular perpendicular BC quired quotient radius rectangle remainder Required the area right angle right line right-angled triangle RULE semiperimeter side AB side AC sine square root station stationary line subtract tance Tang Tangent tract of land trapezium trapezoid triangle ABC trigonometry