The term porch or lobby is intended here as a private and domestic front porch or lobby to a dwelling. Lobbies created in corridors or other circulation spaces elsewhere in the dwelling do not need to comply with requirements of 2.20i but should comply with requirements for hall and door widths in paragraph 2.22. Door swings into a private lobby or private porch should be designed so that a wheelchair user can practicably enter the private lobby and then turn to close the door.
The requirement for 1500mm between door swings should be measured with doors closed where one leaf opens into the lobby, and the other opens outwards but should be measured between open door swings where both doors open into the lobby. Door swings to a non-habitable room such as a WC or a store door opposite the front door would not require this 1500mm dimension.