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 81
... 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 generally make use of a chain that is ...
... 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 generally make use of a chain that is ...
Página 82
... 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 chains to acres . pole chains = 54.56 perches . 82 MEASURING LAND .
... 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 chains to acres . pole chains = 54.56 perches . 82 MEASURING LAND .
Página 83
... acres . RULE . Divide by 10 , and the quotient will be acres . If there be decimals in the quotient , multiply by 4 and by 40 to obtain the roods and perches . EXAMPLE . In 523.2791 square chains , how many acres ? 10 ) 523.2791 ...
... acres . RULE . Divide by 10 , and the quotient will be acres . If there be decimals in the quotient , multiply by 4 and by 40 to obtain the roods and perches . EXAMPLE . In 523.2791 square chains , how many acres ? 10 ) 523.2791 ...
Página 94
... Acres = 61A . 2R . 2. What is the area of a triangular field whose sides measure 10.64 , 12.28 and 9.00 chains ? Ans . 4A . 2R . 26P . 3. What quantity of land is contained in a triangle , the sides of which are 20 , 30 and 40 chains ...
... Acres = 61A . 2R . 2. What is the area of a triangular field whose sides measure 10.64 , 12.28 and 9.00 chains ? Ans . 4A . 2R . 26P . 3. What quantity of land is contained in a triangle , the sides of which are 20 , 30 and 40 chains ...
Página 103
... is too abstruse to admit of a place in this work . The student who wishes to see a demonstration is re- EXAMPLES . 1. How many acres are in a circle ferred to treatises on Mensuration or Fluxions . MEASURING LAND . 103.
... is too abstruse to admit of a place in this work . The student who wishes to see a demonstration is re- EXAMPLES . 1. How many acres are in a circle ferred to treatises on Mensuration or Fluxions . MEASURING LAND . 103.
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