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I am planning on some extension work and have not been able to find out how wide the footings for the foundations will need to be. I’ve been told they need to be 1 metre deep, but not how wide.
Could anyone enlighten me on this, please?
This will be a single storey extension on entirely flat ground.
"Hi,
If it's a double storey extension the footings will need to be 600mm wide. If it's a single storey then in some cases they will only need to be 450mm wide."
"The depth depends on what the ground is like you have to dig to solid ground.
So if you have a solid ground like shallet you might only have to go down 450mm
For a single storey building strip foundations will typically be 450mm wide and at least 200mm deep, and for two storeys 600mm wide and 200mm deep."
"That depends on building control but usually 600mm wide and 1000mm deep."
Answered on 21st Jan 2020 - Member since Jan 2020 - report"It's best to make them 1 metre wide and build in the centre. May be overkill to some, but we always go 1 metre on footings width."
Answered on 20th Dec 2019 - Member since Oct 2019 - report"Hello, In West Oxfordshire we dig our footings 600mm wide."
Answered on 31st Dec 2019 - Member since Dec 2019 - report"Hi,
Almost all building control inspectors will ask for a minimum of 600mm wide and 1 metre depth for any size extension to a property.
Hope this helps."
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