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The installation of timber intermediate floors holds a key function to the overall construction, the longevity of the structure and the satisfaction of the home user. The design must be followed at all times and discrepancies with the design or materials should be reported to an engineer.
Ensure the installer has the correct design specific for the housetype.
Brick work is level.
All materials in the design are available.
Location of non-load bearing walls on the intermediate floor is identified.
Ensure joints have sufficient bearing onto masonry construction.
90mm minimum bearing when joists are providing restraint.
45mm minimum bearing when joist are not providing restraint.
Joist end caps or timber packers installed to prevent air leakage.
Ensure stair case trimmers are accurately placed.
Ensure a 2m clear headroom is maintained throughout the flight of the staircase.
Double joists must be securely fixed together.
Proprietary jointing clips should be used to join the joists together.
They should be placed in accordance with the design.
Provide support noggins for internal non-load bearing walls.
Max centres of 600mm, providing fixing for the sole plate.
Noggins should be securely fixed.
As per the design ensure web stiffeners are installed.
Steel beams infill bolted together.
2mm minimum overhang of the I-joist to under side of steel.
This is to prevent expansion cracking.
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