04-BS-15 · December 2014
Nivaar worked solution (AI-drafted; not reviewed by a licensed engineer)
Reference texts: Bertoline & Wiebe, Technical Graphics Communication; Giesecke, Mitchell, Spencer et al., Technical Drawing / Engineering Graphics (ASME Y14.5 dimensioning practice, CSA B78.1 Canadian drafting conventions).
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 isometric pictorial with labelled vertices A-H, front-right notch. See the official exam paper or the cited reference text.]
The part is a rectangular block whose top-front-left corner is bevelled by a single inclined cut face (vertices B, C, D, E, F), with a small rectangular notch removed from the bottom-right corner. Re-sketching “in the same rotation” means keeping the identical isometric axis orientation (which principal direction points left-forward vs. right-forward vs. up) so the copy is not a mirrored or rotated variant of the original.
Approach. Reproduce the isometric axes exactly as given (vertical + two at 30°), block in the full rectangular prism first with construction lines, then cut the bevel plane B-C-D-E-F and the small notch, and finally darken only the visible outline while leaving hidden edges dashed — the same construction sequence used to build the original.
| Item | Result |
|---|---|
| Rotation preserved | vertical axis up, width axis to the right-front, depth axis to the left-front (unchanged from the given pictorial) |
| Bevel face | B-C-D-E-F-A, a single inclined (non-isometric) cutting plane |
