our social club has its smoking area out the back through the fire escape door. Nine times out of ten the door is left open which means the smoke comes in and it feels pretty pointless having a smoking ban. Also, having the door open interferes with the air conditioning so it's nearly always too cold. What are the rules around smoking areas - do they have to be completely away from a building, does there need to be a door shut between the building and the smoking area? Also, how open does it need to be? This one is like a deck area against two sides of the building with a roof over it. TIA