Calendar: 1889-1890 Page 771

engineering department 125 at 30 to left vertical plane parallel to cuts through centre of the front edge of second step Show resulting sec- tion in elevation marking in dotted lines the parts that are cut away Scale f" to Γ Draw some three or four revolutions of helical spring square in cross-section and of double-thread screw the pitch of the first being 1" and of the second and the diameter of each being 4" 10 Two trees and are 32 yards apart while third tree is 38 yards from and 22 from fourth tree is equidistant from all the others Show the positions on paper and state how far is from and In the scale used 12 yards are represented by inches Ee-draw the figure when the same distance 12 yards is represented by inches 11 cheese 18" diameter and 9" high rests on one of its circular ends and five cuts perpendicular to the table on which it rests divide it up into as many equal portions Take out one of these portions and let it rest on one of its rectangular sides its thinnest part turned from us and making angle of 45 with Give plan and elevation Scale real size VII -Ctbtl Engineering THIRD YEAR State the chief points to be observed in the laying out and construction of main roads Describe how rainfall" and Gathering Ground have to be considered with reference to the water supply of town by an "Impounding Reservoir Make sketches explanatory of the construction of reservoir dam 60 feet high both with earthwork and with masonry How is flood water dealt with in designing storage reservoir State the special precautions that require to be taken