Exams / HS&E DEM / Structural stability and temporary support / Question 1
HS&E DEM practice question: Structural stability and temporary support (1 of 6) E. Specialist: Demolition A free question from our original HS&E DEM practice exam. Try it, then open the answer to see why each option is right or wrong.
Last verified October 2026 against HSE guidance and the law ·How we write our questions
You are planning the order in which parts of a structure will be removed.
What does HSE say the sequence must do?
Choose one answer.
A A. Leave the order to each workerB B. Rule out any uncontrolled collapseC C. Remove the main supports first, to save timeD D. Start wherever is easiest for the machineShow the answer and explanation Answer: B
A. Wrong: Wrong. The sequence is planned and written down.B. Right: Right. HSE says use a sequence that eliminates the possibility of an uncontrolled collapse, removing non-critical elements first.C. Wrong: Wrong. Removing supports early can cause collapse.D. Wrong: Wrong. The sequence must keep the structure stable.Explanation Plan the sequence so there is no uncontrolled collapse, removing non-critical parts first.
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