Extending Foundations sideways..

[Keef]

Is there a recommended method to increase the footprint of the foundations our conservatory stands on? I'm thinking digging a trench along side and then creating a strip foundation of the same depth should be ok but should it be tied in to the existing foundation in some way? It will be for a replacement conservatory not a two storey house or anything hugely heavy.

Any advise appreciated, Keith

 

[Shytalkz]

Like this:

Untitled

• Shytalkz
• 11 Mar 2009
• 1

 

[Keef]

Thanks Shytalkz, but doesn't this require raising the height of the existing foundations or removing part of the floor slab? Neither of which I really want to do...

 

[Shytalkz]

Ah, well you didn't say that now, did you?!

Why do you want to come inside, are you making the new structure smaller?

How much height above footings is there to play with?

 

[Keef]

I want the new foundation to be outside the existing one but there is a single brick wall and floor slab covering the existing foundation. I don't mind removing the wall but don't fancy digging up the floor slab. Is there a solution? I suppose the problem is that any new foundation might move relative to the old without an overlap.

cheers keith

 

[Keef]

there is about 300mm height above footings

 

[Shytalkz]

Where's the slab in relation to the top of the foundation and is it 100 thick?

 

[Keef]

The slab extends over the top of the existing footings but for a single skin, brick, short wall. So there is only a bricks width between the edge of the slab and the edge of the foundations - if that makes sense. The slab is at least 100mm thick, actually over 200 i reckon.

cheers keith

 

[Shytalkz]

Try this then:

Untitled

• Shytalkz
• 11 Mar 2009
• 1

 

[Keef]

Excellent, I get the idea, a picture really is worth a thousand words. Many thanks Shytalkz.

 

[Shytalkz]

No problem

 

[^woody^]

It's the Sketchup Meister!

But can you do a curved tube, with holes cut in it?

 

[Shytalkz]

You doubt me?!

Untitled

• Shytalkz
• 11 Mar 2009
• 1

 

[^woody^]

Excellent.

The oil refinery pipe layout details are in the post

 

[Shytalkz]

Heheh.

I did a raking scaffold on it last night. Kin nightmare, trying to get circular poles one on top of the other at different angles..think I sussed it pretty well though