Assumptions Made Silently
You chose a support condition, a safety factor, a material grade. If none of that is stated, the marker has to assume you guessed — and marks it that way.
THE REAL PROBLEM
Why Do Engineering Assignments Lose Marks on Assumptions?
Engineering is marked like a professional document, not like a maths test. Your answer can be within a percent of the model solution and still lose half the marks, because the marker could not follow how you got there or what you assumed on the way.
The pattern is always the same: an assumption made silently in your head, a unit carried wrong through three steps, or a clause paraphrased instead of quoted. Each of those is small on its own and each one is worth real marks.
The test is whether another engineer could pick up your sheet and repeat the work. If they cannot, the number at the bottom does not protect you.
Send My Calculation Sheet
Units Carried Wrong Through the Working
Millimetres meeting metres, kilonewtons meeting newtons. The error appears once and every figure after it inherits the problem.
Standards Paraphrased Instead of Quoted
A clause described from memory is not a citation. Quote the clause and the number, or the compliance criterion has nothing to award.
CAD Models With No Dimensions or Layers
A drawing that looks right and cannot be read professionally loses marks that have nothing to do with your design ability.
Method That Cannot Be Repeated
Reproducibility is the core of an engineering report. If your steps cannot be followed by someone else, the method criterion collapses.
Safety and Risk Left Out Entirely
Local practice puts safety obligations at the centre of design work. A technically sound answer that ignores them reads as incomplete here.