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Joints at doors and windows in external walls
6.31NI-wide·Technical Booklet C Site Preparation and Resistance to Contaminants and Moisture
The joint between walls and door or window frames should – (a) resist the penetration of precipitation to the inside of the building; and (b) not be damaged by precipitation and not permit precipitati
protection-from-moistureexternal-wallswindowsdoorsClear space to leading edge of door in lobbies with single leaf doors
NI-wide·Technical Booklet R Access to and Use of Buildings
For lobbies served by single leaf doors - the dimension "a" should be not less than 300 mm but for every 100 mm increase in this dimension (resulting in an increased lobby width) the overall length of
accessdoorsLobby width requirements
NI-wide·Technical Booklet R Access to and Use of Buildings
The unobstructed clear lobby width should be - a) for lobbies served by single leaf doors - not less than the width of the widest door leaf plus 300 mm or not less than 1200 mm whichever is the greate
accessdoors