CIVIL ENGINEERING.-PART I.

SECOND PAPER.

The Board of Examiners.

Supply working drawings and specification of any two of the following:

1. A set of gates with gate-posts and all ironwork and fastenings complete for a level crossing of a double line of railway and a public road. The road is at right angles to the railway.

2. A brick chimney for a steam-engine, with concrete foundation on clay. The chimney is to be 75 feet high and 7 feet 6 inches square at base, and is to be provided with a lightning conductor.

3. An iron footbridge, with timber deck. The span to be 25 feet, the width 6 feet, and the deck is to be supported on the lower member of the girders. The abutments need not be shown

in detail.

CIVIL ENGINEERING.-PART II.

FIRST PAPer.

The Board of Examiners.

1. A road has been surveyed through a forested hilly district with heavy rainfall. The ground is usually of clay, covered with about 6 inches of

gravelly loam, and occasional boulders and projecting reefs of hard rock occur. The road is frequently in sideling ground, and is intersected by numerous water-courses, draining areas of from 10 to 100 acres. Describe fully how you would open this road for coach and waggon traffic at small expense.

2. Describe fully and critically, with cross sections to scale, the Macadam and Telford systems of road making.

3.Supply a cross section and specification of a 99-ft. street with tar-paved footpath, bluestone kerb and channels, and wood-paved carriage-way.

4. Under what circumstances do you consider it would be judicious to replace a line of omnibuses on a good metalled road by a horse tramway? What factors would you take into account in your calculation?

5. Supply a sketch plan and description of an enginehouse, and its contained machinery, on any of the Melbourne cable tramways.

CIVIL ENGINEERING.-PART II.

SECOND PAper.

The Board of Examiners.

1. Make to scale a longitudinal and transverse section of a goods locomotive of the standard R or Y class on the Victorian Railways, omitting minor

details. Give as far as possible numerical particulars as to the size, weight, and power of the engine, and show how to obtain the tractive force and desirable adhesion load. Mention the names and functions of the various parts, and comment upon the design from a traffic point of

view.

2. Describe fully the staff and block systems of railway working, and explain how it was that they failed to prevent collisions at Werribee and Windsor respectively.

3. Give all the information you can as to modern developments in passenger rolling-stock for long journeys.

4. Write a short essay on the construction of break

waters.

5. Describe fully the various methods that have been used to facilitate passenger and goods traffic in harbours having tides of 20 feet and upwards.

MECHANICAL ENGINEERING.

FIRST PAPER.

The Board of Examiners.

N.B.-All the questions are of equal marking value. Students are not expected to attempt to answer more than FIVE (5) questions.

1. Shew the best mode of driving a centrifugal pump from a portable engine 20 feet distant, the pump being capable of raising 60,000 gallons per

hour to a height of 30 feet. Calculate the dimensions of belt which you would use.

2. Explain the advantage which involute curves have as profiles for teeth in gear wheels. Make a drawing of such teeth and calculate their strength.

3. Calculate the theoretical and probable practical efficiencies of an engine giving the following

results:

4. Calculate the dimensions of a vertical factory shaft 80 feet high, power required being 65 horsepower at 20 feet up, 50 horse-power at 40 feet, 40 horse-power at 60 feet, and 25 horse-power at 76 feet, assuming suitable velocity and material, &c.

5. Design the pivot and bearings for the shaft mentioned in the last question, and estimate the power lost in friction.

6. Make sketches of suction valves (a) suitable for a sewerage pump raising 1,000 cubic feet per minute, (b) suitable for a town water supply pump raising the same quantity. And explain clearly why many engineers prefer to use a large number of small valves to a few large valves giving the same water-way in this latter service.

7. Make a sketch of a grab to raise about one ton, to be worked by a single chain.

8. Describe clearly the mechanism of the celebrated Maxim machine gun.

9. In an electric tramway the length of line is four (4) miles, the number of cars is four, of 15 E.H.P. each, the cost of line and station is £21,000. Estimate the probable cost per car mile on a basis of Melbourne prices.

10. Calculate the dimensions of a wire rope for a telpherage system. Bucket when full weighs 30 cwt., maximum distance between posts being 80 feet.

MECHANICAL ENGINEERING.

SECOND PAPER.

Students are not expected to attempt questions yielding more than about 100 marks in the aggregate.

1. Construct a velocity diagram for the cross-head of an engine, stroke five (5) feet, length of connecting rod ten (10) feet; and shew, either by scaling on diagram or by calculation, what the difference of the maximum velocity would be if the connecting rod were infinitely long when the engine makes 60 revolutions per minute.-[25 marks.]