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Blank Penetration Seal
A seal that closes the aperture in a fire-resistant wall in order to maintain the wall's ability to resist fire for a specific time. This is without incorporating penetrating services.
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Building Control Body (BCB)
The body responsible for enforcing building regulations on a project and assisting with compliance by given feedback on plans and providing site inspections This may be a local authority building...
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Building Regulations 2010 (Fire Safety) Approved Document B
Government Building regulations for fire safety in residential homes, including new and existing dwellings, flats, residential accommodation, schools, colleges and offices.
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Busbar
A strip or bar of rigid metal that conducts electricity, either as a single element or within a Bus bar trunking unit.
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Bus Bar Trunking Unit
Unit of bus bar trunking system complete with bus bars, their supports and insulation, external enclosure and any fixing and connection means to other units, with or without tap-off facilities.
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Buttered
A term used in conjunction with Intumescent Sealant and Fire Batt. Example Intumescent sealant buttered to all exposed mineral wool edges of the Fire Batt.
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BS EN 1366-3 Test Standard
Service penetration seals are fire tested to the BS EN 1366-3 test standard. BS EN 1366-3 outlines a method of testing and criteria, including application rules, to assess whether a...