Technical Booklet E Fire Safety·Page 166·6.8
Fire main requirements for firefighting shafts
Firefighting shafts must have a wet fire main if the building exceeds 50 m above fire and rescue access level, or a wet or dry fire main in any other case.
A firefighting shaft should be provided with –
(a) a wet fire main where it has a storey more than 50 m above fire and rescue access level; or
(b) a wet or a dry fire main in any other case.
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