ADVANCED SURVEYING. SECOND PAPER. The Board of Examiners. 1. Contrast the so-called friction of water against the sides of a channel or pipe with the friction of solids on solids, and explain the bearing of the points of difference upon the design of hydraulic works and of hulls of vessels. 2. Give a full account of the appliances used, methods adopted, and precautions needed in gauging the discharge of small and large streams of water. 3. Explain carefully how you would fix the dimensions of a water channel the longitudinal gradient of which changes abruptly at certain points. 4. Explain fully how you would proceed to make a complete hydrographic survey of Hobson's Bay and the Lower Yarra. 5. What is meant by a Great Trigonometrical Survey? Describe briefly the objects, methods, and requisite appliances for such a survey. SURVEYING, LEVELLING, MENSURATION, AND DRAWING. FIRST PAPER. The Board of Examiners. 1. Show how horizontal and vertical angles can be accurately determined with a transit theodolite not in adjustment. 2. State how you would adjust the ordinary Dumpy Level. Reduce (applying proper checks) the levels below, having given that B.M. 2 is at R.L. 623 12. Assume that observations up to 7 chains are on 1st page of level book, and that subsequent ones are on 2nd page: 6.18 3. Give what information you can as to the objects of and methods of effecting surveys for (a) Permanent Engineering Works; (b) Bringing land under the Transfer of Land Act. SURVEYING, LEVELLING, MENSURATION, AND DRAWING. SECOND PAPER. The Board of Examiners. 1. Describe the method of determining latitude by observations in the prime vertical. Show how a small error in determination of the prime vertical affects the determination of latitude. How can such an error be detected and its effect allowed for? A star whose N.P.D. is 121° 15′ is observed to cross the prime vertical at 6 hours 12 minutes 35 seconds and to recross at 10 hours 15 minutes 5 seconds sidereal time. Determine the latitude. 2. The following observations are taken with standard mercurial barometers, &c.: Determine the altitude of Station B, Station A being 91 feet above sea level. |