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 73
... perches , AC = 46 perches and BC = 40 perches , wishes to have a well dug in it , that shall be equally distant from the corners A , B and C. What must be its distance from each corner , and by what an . gle from the corner A may its ...
... perches , AC = 46 perches and BC = 40 perches , wishes to have a well dug in it , that shall be equally distant from the corners A , B and C. What must be its distance from each corner , and by what an . gle from the corner A may its ...
Página 74
... perches . The half of CD is = '26 .49 perches CE the distance of the well from each corner . = = = · 3. The angle ACD 90 ° - ADC 29 ° 44 ' ; but because AEC is an isosceles triangle , the angle CAE = ACE 29 ° 44 ' the angle required ...
... perches . The half of CD is = '26 .49 perches CE the distance of the well from each corner . = = = · 3. The angle ACD 90 ° - ADC 29 ° 44 ' ; but because AEC is an isosceles triangle , the angle CAE = ACE 29 ° 44 ' the angle required ...
Página 81
... perches , and 10 square chains make an acre . When the land is uneven or hilly , a four - pole chain is too long to be convenient , and the measures cannot be taken with it as accurately as with one that is shorter . Surveyors therefore ...
... perches , and 10 square chains make an acre . When the land is uneven or hilly , a four - pole chain is too long to be convenient , and the measures cannot be taken with it as accurately as with one that is shorter . Surveyors therefore ...
Página 82
... perches ; also 15 two - pole chains and 38 links = 31.52 perches . To reduce four - pole chains and links , to perches and deci- mals of a perch . RULE . Multiply the chains and links by 4. Thus 13.64 four- To reduce square four - pole ...
... perches ; also 15 two - pole chains and 38 links = 31.52 perches . To reduce four - pole chains and links , to perches and deci- mals of a perch . RULE . Multiply the chains and links by 4. Thus 13.64 four- To reduce square four - pole ...
Página 83
... perches . EXAMPLE . In 523.2791 square chains , how many acres ? 10 ) 523.2791 52.32791 4 1.31164 40 12.46560 Ans . 52A . 1R . 12P . Observation on Chaining . All slant or inclined sur- faces , as the sides of a hill , should be ...
... perches . EXAMPLE . In 523.2791 square chains , how many acres ? 10 ) 523.2791 52.32791 4 1.31164 40 12.46560 Ans . 52A . 1R . 12P . Observation on Chaining . All slant or inclined sur- faces , as the sides of a hill , should be ...
Términos y frases comunes
ABCD ABFD acres adjacent adjacent angles angle ABC angle opposite angled triangle base bearing and distance breadth Calculation centre Co-secant Secant Co-sine Co-tang column cube root decimal 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 number given ratio given side John Gummere Lat Dep latitude and departure length logarithm M.
M. Sine measured meridian distance natural number off-sets parallel parallelogram perches perpendicular quired quotient radius rectangle remainder Required the area right angle right line right-angled triangle RULE semiperimeter side AB side AC square root station stationary line subtract survey tance Tang tangent tract of land trapezium trapezoid triangle ABC trigonometry