learner

Raised Concrete Foundation

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Hi

This my 1st building project so i need advise please.

I intend to build a sips panel single storey extension of around 20m wall length. The floor level of the house is around 500mm above ground level. The previous owners had already added a concrete base at that height so i want to  add to that (3m x 5m).

The concrete i will either have poured or do my self depending on price  is 1.8m x 7.7m x 500mm= 6.93m3, half is on grass and half is on concrete.

The new concrete will but up against the other concrete and an external brick wall.

Will i need expansion joints?

How much is the concrete?

Im sure i will have more questions but first things first.

Thanks

 

 

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Have you had a building regs drawing done for this?

you will probably need to remove everything the previous owner put down unless it is insulated and has a damp proof membrane installed. 

 

I would talk to your architect or building control. 

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It has a DPM i can see it and i will  be insulating the entire house floor once finished.

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extending the slab by 3m isn't as easy as it sounds. you would have two slabs, what if one moves but the other doesn't. as @Russell griffiths says, get professional advice.

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