Technical Booklet E Fire Safety·Page 163·6.5
Maximum hose route distance from fire main outlet
All parts of every storey must be within specified distances from a fire main outlet measured on a suitable hose route, with a reduced direct-line distance allowance when internal layout is unknown.
Firefighting shafts should be located so that every part of every storey (other than fire and rescue access level) is not more than 60 m from a fire main outlet, measured on a route suitable for laying a fire hose (hose route). Where the internal layout is unknown every part of every such storey should be not more than 40 m, in a direct line, from a fire main outlet.
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