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Sills, copings and cappings -- Specification for window sills of precast concrete, cast stone, clayware, slate and natural stone
This Part of this British Standard specifies requirements for window sills of precast concrete, cast stone, clayware, slate and other natural stone for use with windows complying with the requirements of BS 644, BS 6510 and BS 4873.
It does not cover masonry units conforming to the requirements of BS EN 771 (all parts).
NOTE: Cast stone units not containing reinforcement or fixings and not exceeding 650 mm in any co-ordinating dimension are covered by BS EN 771-5.
Coordinating sizes, performance requirements, materials and workmanship.
Guidance on jointing and waterproofing.
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