Calendar: 1876-1877 Page 609

ENGINEERING AND APPLIED SCIENCES 609 and line AB passing through the centre of the solid with its plan and elevation both inclined at 45 to xy Its traces on the surface of the sphere must be marked plate has hole 1' 6" square cut it and is then bent to the form of cylinder of 3' 6" diameter show the appearance of the opening Scale 1' to 1" Three cannon halls of 1' 0" diameter lie on the horizontal plane each touches the other two fourth of the same size rests on the other three show the pile in plan and elevation Scale to 2" 10 Two lines appear in plan to enclose an angle of 70 but their real inclination to each other is 35 find their inclinations to the ground 11 cylinder 4" long 2" diameter lies on the horizontal plane another same dimensions rests upon it and the ground they may be at right angles to each other but neither must be perpendicular or parallel to either plane of projection Plan and elevation required 12 An occupation road of 15' width is crossed at an angle of 45 by railway bridge having semicircular arch the springing of which is 7' above the ground Show the plan with single line of rail and simple elevation when viewed in the direction of the cupation road The appearance of the arch is most wanted Scale 3' to 1" FIRST YEAR On given line AB lj inches in length construct regular hexagon Construct rectangle of half the area and state the area in inches Draw tangent to circle of inch radius from any point If inches from its centre Draw line AC inches long perpendicular to any straight line AB at its extremity Trisect the angle thus formed