Suspended Timber GF NHBC 5.2 10b
Posted: Tue Nov 05, 2019 12:39 pm
Hi,
I'm planning to build an extension with a suspended timber ground floor.
In order to maintain a 150mm void below the floor joists, the level of the oversite below the floor will be lower than the ground outside the house.
according to the NHBC clause 5.2 10b;
Where the finished level below the floor is lower than the finished adjoining ground level, appropriate drainage should be provided.
What would appropriate drainage look like in this senario? a gully connected to either foul or surface water drainage, or a simple soakaway?
thanks
I'm planning to build an extension with a suspended timber ground floor.
In order to maintain a 150mm void below the floor joists, the level of the oversite below the floor will be lower than the ground outside the house.
according to the NHBC clause 5.2 10b;
Where the finished level below the floor is lower than the finished adjoining ground level, appropriate drainage should be provided.
What would appropriate drainage look like in this senario? a gully connected to either foul or surface water drainage, or a simple soakaway?
thanks