Calendar: 1875-1876 Page 607

ENGINEERING AND APPLIED SCIENCES 603 Μ CH Feet At 300 220 110 180 10 230 14 178 18 Give the necessary calculations for setting off curves of the following radii viz 10 40 80 120 chains The apparent height of hill was 000 feet find its true height correcting for curvature and refraction SECOND TEAR Explain the difference between the theodolite and circum- ferentor and mention when they should respectively be used Explain how vernier should be made to read to 20 seconds base line miles long measured on an elevated plain 6000 feet above the level of the sea required its true value at the sea's level The variation of the compass being 15 East whrt will be the hearings of tbe following N33 N87 27 S17 14 S65 20 NE NW SW SE Describe tbe methods used to cross river first by the chain alone secondly by an angular instrument An isosceles triangle having the included angle of 30 required the base when tbe triangle contains an area of 200 acres Lay out 150 acres in rectangular form having one side fifteen chai longer than the other side and give the two sides FIRST YEAR Describe the theodolite and its adjustments Given an equilateral triangular field the sides being 12 chains long and path 10 feet wide inside all round required the area left