CdeC

I live in a four storey flat. We have a back stair outdoor fire escape, with a locked in gate which opens out to an access patio/paved area of about 12 by 12 Feet which leads to a road. The management committee have decided to put low level plant planters across this area approximately 28 inches apart to block cars from using the space for loading, but the height of the planters makes it dangerous for elderly or low vision residents as they could trip over the planters if light fails. Is there a minimum distance that the planters should be apart to make sure in event of an evacuation they would not obstruct people as they might not see them in an emergency situation ...and they could obstruct fire equipment getting access to the stairway. Who should we contact to find out about this?