Hi I live in a retirement home with my wife. We have a ground floor 1 bedroom flat with 3hr fire doors with closures fitted. Our front door opens onto a corridor. My only concern is the patio doors. These open into the gardens but the doors open inward. My worry is if there is a fire or accident and fall in front of these doors. People will not be able to open them. The block of flats are about 18 years old. Is there any rule stating which way the patios should open 

As been said before doors can open inwards, if less used by less than 60 people as for collapsing this would not stop the fire service getting in to rescue you no matter the circumstances.