If the first floor of your home is no higher than 4 5m above the exterior ground level then you will need to be able to escape the house from the first floor via egress windows to all habitable rooms i e.
Room within a room fire regs.
Building a new wall to subdivide a room or create a new room can affect the means of escape from fire.
People are particularly vulnerable to the effects of smoke and toxic fire gases when they are asleep.
They outline the set of fire safety standards a building must meet by law.
Inner bedrooms are particularly dangerous as an inhabitant may be deeply asleep and perhaps even under the influence of alcohol when a fire starts in the outer.
Although the hospitality industry has sharpened up its fire safety act over the last 30 years hotel fires still cause death and injury.
An inner room is simply a room that is reached through another living area known as an access room or outer room they pose a threat to life because a fire in the access room can seriously impede escape from the property.
Building regulations for fire escape windows.
If in doing so a situation is created whereby the route for leaving an existing or new room is only possible through another room then an egress escape window from the existing or new room inner room will be needed as well as possibly one or more smoke alarms.
To bedrooms but not bathrooms.
For example a 2000 square foot assembly room at a school could accommodate 100 students based on square footage alone.
If that room only has a single exit the international building code limits occupancy to 50 people to make it more likely that everyone in the room will have time to exit if a fire takes hold.
In england and wales fire regulations are known as adb or approved document b.