Orthogonal projection? A bit of a mouthful;
My answers to yesterday’s questions:
1/ Orthogonal projection is a drawing created by projecting objects onto planes at 90 degrees (orthogonally);
2/ Object are represented in true size and shape (albeit often scaled);
3/ At least 2 (there are exceptions);
So, OK – you may not associate plans and elevations with orthogonal projections! Should you? Is needing to understand what is behind the creation of a plan or elevation not a bit like having to know multiplication tables by heart when calculators are there to be used?
Well, I believe that many things that are wrong in the construction industry can be traced back to people not understanding how drawings work and others using this lack of knowledge to their own advantage.
Design consultants often intentionally show incomplete drawings with a lot of padding (irrelevant information) to keep the mental image of the proposed building as vague as possible for as long as possible. So, a savvy party within the industry can do one of 3 things: 1/ strive to educate everyone in the rules of orthogonal projection; 2/ use their knowledge to their advantage; 3/change the rules from 2D documenting to a truly 3D based documentation;
BIM needs the 3rd point to happen now. Unfortunately, there are very few signs within the industry to show this happening.