Calendar: 1876-1877 Page 611

ENGINEERING AND APPLIED SCIENCES 611 Given the following heights and distances required rates of inclination and how much per mile in each case Feet At 150 230 120 400 190 150 Describe the method of levelling with the theodolite and when is it nracticable SECOND YEAR Explain the adjustment of the theodolite Let the theodolite be on hill and level it carefully so that the web covers tbe top of the spires of two churches and being miles and 6581 chains off and miles How much is spire higher than spire survey being plotted and laid down to scale of six inches to one statute mile what proportion does that plar bear to the actual size of the ground How would you measure river coming in the way of your base line and how would you measure and continue your base line through wood Illustrate by diagram and work out tbe formula for reducing base measured on an elevated plain to its true value at the level of the sea Explain the principle of the vernier and in what manner would you construct vernier to read to ten seconds when the arc is divided into fourths of degrees Find the base of an isosceles triangle whose sides bear respectively 20 and 20 and whose area is 200 acres Lay out 200 acres in rectangular form one side being twenty chains longer than the other What is meant by the variation of the compass