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jimamberdog
Joined: 28 Apr 2009 Posts: 5
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Posted: Fri Jul 24, 2009 3:41 pm Post subject: Footings for internal wall of extension |
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| I am digging footings for a 2 storey extension and I have taken the external wall footings down to the level of the bottom of the original strip foundations, which is 1m below finished floor level. I have a 100mm internal block wall which will carry the first floor joists. Does this footing need to be as deep as the external walls, which are 300mm cavity to 2 storeys. The building inspector is coming monday and I am hand digging the remainder of the footings this weekend. I know that I have to go to good ground and this appears to be about 700mm below ffl. External walls will have 500mm trench fill. |
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bd3cc
Joined: 30 Jan 2008 Posts: 323
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Posted: Thu Sep 24, 2009 10:27 pm Post subject: |
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| The BI will tell you what is required |
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