Elementary text book for young surveyors and levellersSimpkin, Marshall & Company, 1856 - 185 Seiten |
Im Buch
Ergebnisse 1-5 von 14
Seite 36
... runs to 34 on 485 — that is , the measured line is a line , connecting the point ( 574 on the line 635 , measured from the beginning of the line ) with the point ( 34 on the line 485 ) . And , again , at Field No. 2 , page 47 , " from ...
... runs to 34 on 485 — that is , the measured line is a line , connecting the point ( 574 on the line 635 , measured from the beginning of the line ) with the point ( 34 on the line 485 ) . And , again , at Field No. 2 , page 47 , " from ...
Seite 37
... runs between two properties , the centre divides them . This is the case with a parish ditch , which is generally the water way from the hills . CHAP . V. SURVEY OF A FIELD OF THREE SIDES . Let ABC be a triangular field to be surveyed ...
... runs between two properties , the centre divides them . This is the case with a parish ditch , which is generally the water way from the hills . CHAP . V. SURVEY OF A FIELD OF THREE SIDES . Let ABC be a triangular field to be surveyed ...
Seite 45
... runs from 480 on 485 , to the right . It is 724 long ; but the station is at 7 · 19 ; draw any line , making the sup- posed angle with AB , and mark 7 · 19 against it . The third line begins at 719 on the last line , and turns to the ...
... runs from 480 on 485 , to the right . It is 724 long ; but the station is at 7 · 19 ; draw any line , making the sup- posed angle with AB , and mark 7 · 19 against it . The third line begins at 719 on the last line , and turns to the ...
Seite 46
... runs to another previous station , 719 on 724 ; its total length is 873 , and there are two stations upon it , 230 and 490 ; draw this line in its proper position , and mark off the stations , 230 and 490 . The next two lines are check ...
... runs to another previous station , 719 on 724 ; its total length is 873 , and there are two stations upon it , 230 and 490 ; draw this line in its proper position , and mark off the stations , 230 and 490 . The next two lines are check ...
Seite 77
... runs to 5.28 on 6 · 92 . Had this example been an open field instead of a wood , a very different plan would have been adopted , as a base line would have been run within the property , and through the whole length of it , and triangles ...
... runs to 5.28 on 6 · 92 . Had this example been an open field instead of a wood , a very different plan would have been adopted , as a base line would have been run within the property , and through the whole length of it , and triangles ...
Andere Ausgaben - Alle anzeigen
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.