Timber joist and deck floors - avoiding movement
This Wood Information Sheet (WIS) gives guidance specifically intended to minimize problems of movement and noise in timber floors in masonry or timber frame buildings. The guidance relates mainly to dwellings although much is applicable to floors in other building types, such as timber compartment floors in flats.
This WIS can be used as a checklist for designers and site supervisors to ensure that timber floors give continuing satisfactory performance.
This sheet does not cover the design information readily available in documents, for example thermal insulation and ventilation.
- Timber joists
- Strutting and noggings
- Floor decking
- Support of non-loadbearing walls
- Ceilings for immediate floors
- Squeaks, creaks and cracking noises
Strutting plays a useful role in promoting composite structural behaviour of the components that form a timber floor.
The effects of strutting are to:
- reduce local deflections by transferring load to adjacent joists (load sharing)
- improve joist stability by providing lateral support to joist edges
- reduce the...
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