Elementary text book for young surveyors and levellersSimpkin, Marshall & Company, 1856 - 185 Seiten |
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Seite xi
... Acres by offsets at every chain by giving and taking , or compensation lines . Practical Examples of Fields of ... Statute Measure , and vice versa . English Measure . Different Lengths of the Perch . 79 • 87 · 93 94 Different Values of the ...
... Acres by offsets at every chain by giving and taking , or compensation lines . Practical Examples of Fields of ... Statute Measure , and vice versa . English Measure . Different Lengths of the Perch . 79 • 87 · 93 94 Different Values of the ...
Seite 19
... statute acre in England consists of ten square chains , that is , of ten square blocks of land , whose length and breadth are one chain each ; or , taking the 10 blocks as one whole block , then an acre is equal to the area of a ...
... statute acre in England consists of ten square chains , that is , of ten square blocks of land , whose length and breadth are one chain each ; or , taking the 10 blocks as one whole block , then an acre is equal to the area of a ...
Seite 94
... statute length of the perch is 16 and a half feet , but it varies in different counties of England . In Devonshire and Somersetshire , the customary perch , that ... statute acre , a square perch is 272.25 94 Different Values of the Acre ·
... statute length of the perch is 16 and a half feet , but it varies in different counties of England . In Devonshire and Somersetshire , the customary perch , that ... statute acre , a square perch is 272.25 94 Different Values of the Acre ·
Seite 95
Henry James Castle. In the statute acre , a square perch is 272.25 square feet , and the acre , therefore , is equal ... acres , roods , & c . , in every case , to square perches ; multiply these by the number of square feet in the given ...
Henry James Castle. In the statute acre , a square perch is 272.25 square feet , and the acre , therefore , is equal ... acres , roods , & c . , in every case , to square perches ; multiply these by the number of square feet in the given ...
Seite 96
... statute measure , reverse the pre- ceding rule . EXAMPLE 1. How many statute acres are there in 28 acres , 3 roods , and 15 perches , of Devonshire measure ? A. R. P. 28. 3. 15. 28.84375 Devonshire acres if the Devonshire acre = 1 ; the ...
... statute measure , reverse the pre- ceding rule . EXAMPLE 1. How many statute acres are there in 28 acres , 3 roods , and 15 perches , of Devonshire measure ? A. R. P. 28. 3. 15. 28.84375 Devonshire acres if the Devonshire acre = 1 ; the ...
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Elementary Text Book for Young Surveyors and Levellers with Copious Field ... Henry James Castle Keine Leseprobe verfügbar - 2019 |
Elementary Text Book for Young Surveyors and Levellers With Copious Field ... Henry James Castle Keine Leseprobe verfügbar - 2019 |
Häufige Begriffe und Wortgruppen
2nd gate A. R. P. Answer angle of bearing angle of elevation base line bisect broad arrow centre chain surveying chains 50 links CHAP CHECK ANGLES check line circle circumferentor clamp corner correct cross customary determined diagonal DIAGRAM distance ditch divided draw equal Euclid EXAMPLE fence field book field notes flag gate post given angle given line given point half degrees hedge height horizontal inch interior angles intersection join Lancashire length line AC long scale mark meridian line motion needle number of degrees object observation offsets perpendicular placed plot pond protractor Required the true right angles right-angled triangle river road roods round screws similar triangles spirit level square chains square feet statute acres statute measure taken telescope theodolite top of bank trapezium triangle ABC true bearing true north vertical whole instrument width Wiltshire Wood
Beliebte Passagen
Seite 111 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sides.
Seite 160 - LEVELLING is the art of representing the inequalities of the earth's surface, and of determining the relative heights of any number of points above or below a line, equidistant, at every point, from the centre of the earth.
Seite 17 - The square of the hypothenuse is equal to the sum of the squares of the other two sides ; as, 5033 402+302.
Seite 8 - To describe a square upon a given straight line. Let AB be the given straight line : it is required to describe a square upon AB.
Seite 102 - The existence of parallax is determined by moving the eye about, when looking through the telescope, observing whether the cross wires change their position, and are flittering and undefined. To correct this error, first adjust the eye-piece, by means of the moveable eye-piece tube, till you can perceive the cross wire clearly defined, and sharply marked against any white object.
Seite 23 - C will be found 9, the square root on D. For the square root of 144 : Set 1 on C to 10 on D ; then against 144 on C will be found the square root 12 on D. 42. To find the area of a board or plank : The rule is, to multiply the length by the breadth, the product will be the area ; therefore, by the sliding rule, Set 12 on B against the breadth in inches on A ; then...
Seite 16 - E, the adjacent angles CEA, AED; these angles are together equal to two right angles. (i. 13.) Again, because the straight line DE makes with AB...
Seite 28 - To find the area of a circle. Rule — Multiply the square of the diameter by .7854; or the square of the radius by 3.1416; or the square of the circumference by .07958. Find the area of a piston 20 in. in diam. Answer— 20!
Seite 8 - To draw a straight line at right angles to a given straight line, from a given point in the same. Let AB be the given straight line, and C the given point in it : it is required to draw from the point C a straight line at right angles to AB.
Seite 23 - To find the Area of a Triangle when the Three Sides are given. Rule. — From half the sum of the three sides subtract each side separately. Multiply the half sum and the three remainders together, and extract the square root of the product.