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HS&E Operatives practice question: Demolition and dismantling (3 of 7)

D. High risk activities A free question from our original HS&E Operatives practice exam. Try it, then open the answer to see why each option is right or wrong.

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You are stripping out the inside of a building. A row of steel props is holding up a floor above, and they are in your way.

What should you do?

Choose one answer.

  1. A. Remove them if the floor above looks strong enough
  2. B. Leave them and ask your supervisor
  3. C. Take out one prop at a time and watch for movement
  4. D. Move them a little to one side so you can work
Show the answer and explanation

Answer: B

  • A. Wrong: Wrong. You can't tell if a structure is safe by looking at it. Only a competent person can decide.
  • B. Right: Right. Temporary supports are designed by a competent person and must be removed only as the designer says. Removing them early could cause a collapse.
  • C. Wrong: Wrong. A floor can collapse without warning. Props are only removed as planned by a competent person.
  • D. Wrong: Wrong. Props are put in a set place to carry the load. Moving them could make the floor unstable.

Explanation

Alteration and demolition work must be planned by competent people. Never remove props or temporary supports unless the temporary works plan says so.

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