TIMBER FRAME COMBINATIONS

SEPARATING WALLS	SEPARATING FLOORS
SEPARATING WALLS	E-FT-1 E-FT-5	E-FT-3 E-FT-6	E-FC-2	E-FS-1
E-WT-1	✔	✔	W ₁	W ₁
E-WT-2	✔	✔	W ₁	W ₁

KEY
W	Only the separating wall requires pre-completion sound testing.
1	Lightweight steel and timber frame walls may be constructed above in-situ poured concrete floors. The lightweight walls built directly off the concrete floors may be registered as robustdetails® provided: they meet all other requirements of the robustdetails®, including flanking constructions the principles of the raft foundation junction are followed. As such, the concrete of the floor must have a mass of 365 kg/m2 (min), and a floating floor treatment must be provided. Walls constructed to the soffit of in-situ poured concrete floors can not be registered as robust details™ and may be subject to pre-completion sound testing.

KEY

Only the separating wall requires pre-completion sound testing.

Lightweight steel and timber frame walls may be constructed above in-situ poured concrete floors. The lightweight walls built directly off the concrete floors may be registered as robustdetails® provided:

they meet all other requirements of the robustdetails®, including flanking constructions
the principles of the raft foundation junction are followed. As such, the concrete of the floor must have a mass of 365 kg/m2 (min), and a floating floor treatment must be provided.

Walls constructed to the soffit of in-situ poured concrete floors can not be registered as robust details™ and may be subject to pre-completion sound testing.

Decibel Ratings
E-xx-nn	Building Regs
	Invalid Combination
✔	Building Regs Combination