04-BS-15 · Undated paper
Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Basic Studies / 04-BS-15 — Engineering Graphics & Design Process, undated. Closed-book, no calculator, 3 hours, 100 marks; five questions constitute a complete exam paper (answer ALL five). All sketches are freehand technical drawings following third-angle projection (CSA B78.1 / ASME Y14.5) unless the question calls for isometric pictorial or sectioning conventions.
Reference texts: Bertoline & Wiebe, Technical Graphics Communication (4th ed.) — orthographic projection, isometric pictorials, auxiliary/section views, third-angle projection; Giesecke, Technical Drawing / Engineering Graphics (15th ed.) — ASME Y14.5 dimensioning, CSA B78.1 drafting practice, sectioning conventions, glass-box projection theory.
Question text not reproduced: the examination questions are © Engineers and Geoscientists BC. Open the official past paper (linked at the top of this page) to read the question, then follow the worked solution below.
[Figure not reproduced: Given Top, Front and Right-side views. See the official exam paper or the cited reference text.]
Given. Reading the three views together: the Top view is a chamfered, stepped plan (a 45° corner cut at the front-left, a through-hole in the exposed left shelf, and a small rectangular notch removed from the back-right corner); the Front view confirms a step UP in height moving left to right (a low shelf on the left, rising to a taller block on the right); the Right-side view confirms the same two-level step and shows hidden lines for the notch and the hole. Check: the back-right notch opens away from the isometric corner chosen below, so it is fully hidden in that pictorial (correctly shown with no line at all, per "no hidden lines in an isometric sketch") — its shape is only recoverable from the Top view.
Reconstruct the solid as a low chamfered shelf (front-left corner cut 45°, one through-hole) with a taller block rising from it on the right, itself missing a small back-right corner (the notch). Draw the isometric axes at 120° from the nearest (front-left) corner, lay off true lengths only along the three axis directions, build the shelf's three visible faces, then the raised block's three visible faces set back and up from the step line, and finally the chamfer facet and the hole ellipse.
