Calendar: 1888-1889 Page 763

ENGINEERING DEPARTMENT 755 perpendicular to and the other has one end resting on the ground and tlie other 18" abx ve it Scale f" to Γ Explain the use of the proportional compass and the meaning of the various lines upon it Draw regular pentagon having perimeter of 11" and convert it into square of equal area Cut the square up into six equal right-angled triangles Two equal octagonal prisms are to be united together at an angle of 90 forming one corner of picture frame Give the form of the section Each side of octagon 10 prism 1'57" long has its ends equilateral triangles of 7" side It rests on the ground on one of its rectangular faces and at an angle of 45 with the circular opening of 75" diameter runs through the centre of it Give plan and elevation and the section made by plane parallel to and at 90 with that crosses the axis at its centre 11 right prism 37 in length of which the base is regular hexagon of 2" sides has its axis perpendicular to ground and two of its faces at 45 with the Re-draw it under the same conditions but to the scale 12 Draw circle of 15 radius and divide it into 20 equal sectors Explain in writing the geometric method employed for the division of the circle VIL-Ct&tl Engineering THIRD YEAR design for wrought iron lattice girder railway bridge of ninety feet span to carry two lines of rails in accordance with the detailed particulars furnished previously prepared town containing 10 000 houses has to be sewered Describe the volume of sewage that has to be provided for Also the essentials to be observed with reference to the sewerage system throughout What are the circumstances under which irrigation and