Escape and rescue routes must be kept free from obstructions. This includes

• all stairs, corridors and doors,
• all green areas on the evacuation plans.

This specifically means:

• Do not block, lock or wedge exits
• Do not constrict escape routes
• Do not lock people in (including yourself).

Escape and rescue routes must be kept free from flammable items:

• Posters, notices etc. should be hung in display cases or frames
• Only use furniture and stand elements made from non-flammable materials
• Do not put photocopiers or pinboards in corridors (in the event of a fire they emit toxic