Dug footing for house extension 900x600 what height do i put concrete?

dug footing for house extension 900x600 what height do i put concrete, do i fill up to floor level about 500mm or can i put about 2ft of concrete in and raise up to damp level with blocks or engineering bricks

Dug footing for house extension 900x600 what height do i put concrete?palace theatre

Hi - Your plans should state MINIMUM depth of concrete required. Assuming you are in the UK, what does the building inspector say. It's normal, or certainly used to be, for a 'site visit' from a building inspector from the planning department to inspect an excavation prior to pouring concrete. This would be to ensure that you have dug down to a suitable depth to suit the existing ground conditions/level of existing drains.

Before pouring the concrete, get some wooden pegs, normally 2"x2", and knock them into the ground, at the bottom of the trench, about 4' apart. The distance from the trench bottom to the top of the peg will be the thickness of concrete you intend to use. Knock the first peg in to allow the required depth of concrete. Work your way along the trench and, using a level, make sure all of the tops of the pegs are level. The top of these pegs will be the finished concrete level. This will make it easier to level the concrete as it is poured and give you a good level base to build off.

You SHOULD start brick/blockwork below finished ground level.

If you are using a face brick up to damp level it is advisable to cover it with polythene before proceeding with the main blockwork. This will keep the bricks clean. The polythene is removed at the end of the job.

On the outside of the extension you should allow a minimum 6" between the FINAL finished ground level and the dampcourse.

Dug footing for house extension 900x600 what height do i put concrete?concert tickets opera theater

Depends how bad you want to cover up someone?
As long as your pouring your footing I'd pour it up almost to floor level. You'll have to take into account the top plate as well as floor joices on the addition. The height of these if the concrete is up to the old floor will put you well over the old floor level. So figure in you top plate and floor joices subtract this from the footing and then you should have even floor transition from new to old.
when you pour concrete, ive not seen it to floor level. normally there are courses of blue brick / engineering bricks or blocks underground.
Have drain tiles installed on perimeter prior to pouring. The rough in plumbing had to be trenched for under basement floor. Remember, after pipes run for main level (this will be in your basement's ceiling; allow space for ceiling placement also. Will you still have head room. Installing any ceiling or non-flush ceiling lights?

Just remembers for 'plan ahead'. We were glad we did.
900/600 ft?? that's 54.000 sf wow In my opinion you should be asking the building inspector not me!!!!!
Read the answer from BT it is a good answer.best of luck
The minimum depth of concrete should be 225 mm. But all will depend on certain conditions ie, type of soil or any trees or their roots in the vicinity. You should contact your local building control officer to visit when you have excavated. You may find that you can go 225mm for most of it and have to dig a deeper bit if the ground is unstable.