Elementary text book for young surveyors and levellersSimpkin, Marshall & Company, 1856 - 185 Seiten |
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Seite 20
... square poles ; or ( 22 ) 3 yards > 10 = 4840 square yards ; or ( 66 ) 2 feet × 10 = 43560 square feet ; or ( 100 ) 2 links10 = 100,000 square links . Again , as there are 100 links and 66 feet in a chain , 1 chain 100 links 66 feet ...
... square poles ; or ( 22 ) 3 yards > 10 = 4840 square yards ; or ( 66 ) 2 feet × 10 = 43560 square feet ; or ( 100 ) 2 links10 = 100,000 square links . Again , as there are 100 links and 66 feet in a chain , 1 chain 100 links 66 feet ...
Seite 26
... sq . chains 5. 3. 24 . EXAMPLE 2. How many square feet of paving are there in a court yard , whose diagonal is 2 chains 64 links , and perpendiculars 95 links and 84 links ? Answer 10292 square feet . PROBLEM VII . To find the area of ...
... sq . chains 5. 3. 24 . EXAMPLE 2. How many square feet of paving are there in a court yard , whose diagonal is 2 chains 64 links , and perpendiculars 95 links and 84 links ? Answer 10292 square feet . PROBLEM VII . To find the area of ...
Seite 30
... foot and a half long , and pointed at one end , to stick in the ground . A piece of red cloth should also be ... feet high , about an inch diameter , pointed and shod at the bottom , and having a white and red flag , about nine inches square ...
... foot and a half long , and pointed at one end , to stick in the ground . A piece of red cloth should also be ... feet high , about an inch diameter , pointed and shod at the bottom , and having a white and red flag , about nine inches square ...
Seite 94
... feet . This is a lineal difference . There is , also , in some coun- ties of England , a superficial difference in the measure of an acre ; an acre , in Wiltshire , containing 120 square statute perches only , instead of 160 . The ...
... feet . This is a lineal difference . There is , also , in some coun- ties of England , a superficial difference in the measure of an acre ; an acre , in Wiltshire , containing 120 square statute perches only , instead of 160 . The ...
Seite 95
... square feet , or 225 square feet , the number of sq . feet 225 × 160 = 36000 and of yards = 4000 In Cornwall , where the perch is 18 feet , 18 × 18 324 x 160 feet = 51840 sq . feet , or 5760 sq . yards . The Lancashire perch is 21 feet long ...
... square feet , or 225 square feet , the number of sq . feet 225 × 160 = 36000 and of yards = 4000 In Cornwall , where the perch is 18 feet , 18 × 18 324 x 160 feet = 51840 sq . feet , or 5760 sq . yards . The Lancashire perch is 21 feet long ...
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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.