INSTALLATION
Setting out tolerances and movement
Deflection allowance (mm)
New build in-situ or precast concrete framed building
Renovation of existing concrete framed building
Edge beam span (m)
Steel framed building
4 5 6 7
±10 ±10 ±12 ±14
±10 ±13 ±15 ±18
±16 ±20 ±24 ±28
BENCHMARKS A benchmark is a representative sample defining the detailing and quality of a through-wall system. A benchmark can be a standalone item or part of the contract works and should either be available for inspection throughout the contract period or documented in such a way as to allow a comparison of what is being built with the benchmark. A benchmark can be used for demonstrating the construction and/or the finish and this should be defined in the records. 8 ±32 Note: the higher deflection allowance for new build concrete buildings is to take account of the long term creep and shrinkage effects of the concrete. ±16 ±20
“A benchmark can be used for
demonstrating the construction and/ or the finish and this should be defined in the records.”
36
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