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  Item Reference: KCLCAL-1896-1897-715

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FACULTY OF SCIENCE CXXV Sketch and explain the use of the box sextant and the circumferentor curve of 25 chains radius has to be set out with theodolite The angle of intersection is ascertained to be say 80 Calculate the length of the curve between the tangent points Explain the principle upon which the Vernier is con- structed and calculate one to enable scale graduated to degrees to be read to minutes Sketch page of levelling field book with few readings entered in the back fore and intermediate columns Show the levels reduced and carried to the height above base column and the page checked road commences with rising gradient of in 80 for 12 chains It then has falling gradient of in 200 At what distance from where the falling gradient begins will the road have its original level measuring of course on horizontal datum Sketch and describe two methods of continuing the direction and chainage of base line past an obstruction like block of buildings Make sketch of the telescope of level and describe its adjustments How can the variation of the needle be determined 10 What are the sources of error in chaining and levelling XIII -CtTO ngmtm'ng SECOND YEAR Sketch and explain the construction of weir to be temporarily fixed in stream to gauge the flow How can traverse survey be carried out the lengths of the lines being ascertained without actually chaining them Describe also how the relative levels of points can be determined by the theodolite and staff How are the cubic contents of bank or cutting ascertained
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