2-3 metre gardens wall - HOW DEEP foundations have to be dug?? for a 2-3 metre wall?

Danny_G

To build a 2 metre high brick wall, how deep do the foundations have to be dug deep?

To build a 3 metre high brick wall, how deep do the foundations have to be dug deep?

(how many Cm/metres for each case- do the foundations approximately have to be) ?

for an outdoor garden wall ?

Added- it is a garden wall, with soil foundatrions (edit- I mean with soil below the grass....NOT SOIL FOUNDATIONS!. - but soil beneath the gras...
, and mabey solid garden brown soil deeper)

NOTE- the wall IS NOT near any roads, or public places

tanith

Take a look here it seems to explain what you are looking for.. scroll right down for a more detailed explaination

http://www.ehow.com/how_8655941_dig-footings.html

System

foundation design depends entirely on what you are building on, the depth will vary massively if you are for example, building on rock and the other extreme of building on peat...

olias

I think for a 3m high wall, you may require planning permission (over 6ft?)

Olias

teneighty

Take a look here it seems to explain what you are looking for.. scroll right down for a more detailed explaination

http://www.ehow.com/how_8655941_dig-footings.html

I'm sorry but I had a look at that site out of curiosoty and it is complete nonsense and quite dangerous.

As Mr R Sole says, it depends entirely on the ground conditions. You cannot give standard depths or rule of thumb depths unless you know what the sub-soil is.

I went to inspect DIY extension once where the owner had been told foundations had to go down 1 metre. The trouble was he hit solid rock at 6 inches so he hired a breaker and had spent 2 weeks cutting through solid rock to get his metre deep trench. He was so proud of it I didn't have the heart to tell him.

Also just to mention building a 2 metre high freestanding garden wall let alone a 3 metre needs to be done properly, the correct thickness and piers etc. They have a tendency to fall over if too thin or not supported properly and 2 metres of brickwork makes a hell of a mess of someone stood next to it. Make sure you do your homework or get in a reputable bricklayer.

Danny_G

Added- it is a garden wall, with soil foundatrions, and mabey solid garden brown soil deeper

Chopper_Read

Danny_G wrote: »

Added- it is a garden wall, with soil foundatrions, and mabey solid garden brown soil deeper

Its fine to build straight onto brown soil.

lemontart

don;t forget depending on where the wall is going to be built to make sure no gas pipes. water pipes etc underneath before putting a spade in the ground. You could not only face a hefty bill for the cost to the owners of such of repairing them but if gas put yourselves and others at risk.

There could also be bt or other lines underground, drains etc .

This is where you can check http://www.linesearch.org/
and the new site http://www.linesearchbeforeudig.co.uk/

Leif

You should have plans with pipes, septic tanks etc marked on among your house purchase documents. Bear in mind utilities such as mains sewer might not be on the deeds, but you should have later documents that cover them.

mysk_girl

Make sure you build it thick enough as well, a single thickness (100mm/4") wall would not be stable at 3m high.

Danny_G

mysk_girl wrote: »

Make sure you build it thick enough as well, a single thickness (100mm/4") wall would not be stable at 3m high.

Leif wrote: »

You should have plans with pipes, septic tanks etc marked on among your house purchase documents. Bear in mind utilities such as mains sewer might not be on the deeds, but you should have later documents that cover them. .

thanks for the thickness advice, and pipes advice.

But what about the depth of the wall foundations, for a
2 metre wall,

and foundation depth for a 3 metre wall?

- it is a garden wall, with soil foundatrions, and mabey solid garden brown soil deeper