Calendar: 1883-1884 Page 660

656 APPLIED SCIENCES Explain by means of sketch the relation that exists between 'central angle 'deflection angle 'tangential angleי in setting out curves How many feet elevation are gained in mile with gradient of in 150 Describe the sextant and its use for determining stations afloat Sketch the appliance that can be attached to the tele- scope of level to determine distances and explain the principle on wdiich it is based What are curvature and refraction י State the formulae applicable to them In nautical surveying how are soundings taken and plotted in the construction of charts Show by sketches cross sections of road alterations to comply with ζ Standing Orders Describe the practical way of determining sidewidths of land on sidelong ground 10 Calculate the width of land required for railway bank at point where it is 35 feet deep formation width 30 feet slopes 2J to and with feet beyond slopes 11 cutting is 20 chains in length The depth at one end is 12 feet and at the other 21 feet slopes 1J to forma- tion width 30 feet Calculate the quantities in this cutting" SECOND YEAR Sketch and describe how traverse survey is made and what is meant by closing' it State trigonometrical way to ascertain the distance of an inaccessible object from you Describe the Box Sextant and its use In parliamentary surveying for railways explain some Standing Order requirements How are crooked fences equalized geometrically Explain how curve can be set out with only the chain and calculate the offsets for curve of 15 chains