Escape routes, external

External escape routes External escape stairs... 

Where more than one escape route is avaiiabie from a storey or part of a buiiding one or more of the routes may be by way of an externai escape stair, provided that there is at ieast one internal escape stair from every part of each storey and that the external stair(s) meet the foiiowing recommendations. 

Any wall. Including a door or a window in the wall, within 3 m of the escape route has at least 30 minutes fire resistance for integrity from the inside - and there is no unprotected area below a height of 1.1 m measured from the level of the escape route Any roof hatch or roof light forming part of the roof within 3 m of the escape route has at least 30 minutes fire resistance for integrity from the underside The route is adequately defined and guarded by walls and/or protective barriers The route across the roof leads to a storey exit or an external escape route. 

Should be provided at each point where an escape route leads into a protected stain/vay, or an external stain/vay... 

Iteep area dear of obstructions feat mr impede escape on an escape door or route Found on escape routes where onstruclons occur, e.g. on fee external fece of a fee exit door so feat vehides do not obsirud... 

Mitigation and emergency response strategies, including escape routes. Weather and other external issues. 

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