A Rudimentary Treatise on Land and Engineering Surveying, with all the modern improvements ... With illustrationsVirtue brothers & Company, 1865 - 232 pages |
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Page 3
... centre C , and dividing the circle into two equal parts , each of which is called a semicircle . Half the diameter ... centre ; and it is estimated by the number of degrees contained in that arc : - thus the arc A B , the centre of which ...
... centre C , and dividing the circle into two equal parts , each of which is called a semicircle . Half the diameter ... centre ; and it is estimated by the number of degrees contained in that arc : - thus the arc A B , the centre of which ...
Page 4
... centres A and B , with any radius , or opening of the compasses , greater than half A B , describe two arcs , cutting ... centre r , with the same radius , describe the arc ns - take the arc mr in the compasses , and apply it from n to s ...
... centres A and B , with any radius , or opening of the compasses , greater than half A B , describe two arcs , cutting ... centre r , with the same radius , describe the arc ns - take the arc mr in the compasses , and apply it from n to s ...
Page 5
... centre , describe an arc to cut AB in m and n ; -with centres m and n , and the same or any other radius , describe arcs intersecting in o : through C and o draw Co , the perpendicular required . m C 2. When the point is nearly opposite ...
... centre , describe an arc to cut AB in m and n ; -with centres m and n , and the same or any other radius , describe arcs intersecting in o : through C and o draw Co , the perpendicular required . m C 2. When the point is nearly opposite ...
Page 6
... centres , and radius A B , describe arcs cutting each other in D : draw A D , DC and the square will be com- B pleted ... centre C and radius AB , describe another arc , cutting the former in D : — join AD , DC to complete the rectangle ...
... centres , and radius A B , describe arcs cutting each other in D : draw A D , DC and the square will be com- B pleted ... centre C and radius AB , describe another arc , cutting the former in D : — join AD , DC to complete the rectangle ...
Page 7
... centre , with radius A o , describe a semicircle , and prolong BC to meet it in F : -on BF describe the square B F G H , and it will be equal to the rectangle ABCD , as required . E B H A PROBLEM XIV . To set off an angle to contain a ...
... centre , with radius A o , describe a semicircle , and prolong BC to meet it in F : -on BF describe the square B F G H , and it will be equal to the rectangle ABCD , as required . E B H A PROBLEM XIV . To set off an angle to contain a ...
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Common terms and phrases
ABCD accuracy acres adjustment arches axis beam compasses breadth bubble centre chains common correct cross sections cubic yards cutting datum line depth direction distance divided draw embankments equal error EXAMPLE feet field book figure finding the contents fore sights formation level formula Gentleman's Diary given gradient ground height horizontal inches instrument intersection laid Lay the ruler length level book main line mark measured mile move it parallel NOTE object offsets parallax parallel ruler perpendicular position Prob protractor quality lines quantity of land radii radius railway curves Rankine's method ratio right angles river river Ouse road scale screw serpentine curve shewn shews side sine slopes spirit level square links staff stations straight fence surface survey surveyors taken taking tangent telescope theodolite tion Tithe Commissioners trapezium triangle tube tunnel vernier vernier scale vertical viaduct whence
Popular passages
Page 3 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; and each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds ; and these into thirds, &c.
Page 123 - An Act for consolidating in one Act certain provisions usually inserted in Acts of inclosure, and for facilitating the mode of proving the several facts usually required on the passing of such Acts...
Page 240 - Gd. 108*. METROPOLIS LOCAL MANAGEMENT AMENDMENT ACT, 1862 ; with Notes and Index. Is. 109. NUISANCES REMOVAL AND DISEASE PREVENTION ACT. Is. 110. RECENT LEGISLATIVE ACTS applying to Contractors, Merchants, and Tradesmen. Is.
Page 8 - Similar triangles are to one another in the duplicate ratio of their homologous sides.