Concrete lintel foundation in footings

[firapara]

Hello,

Doing a garage conversion, Building Control wants a lintel foundation in the garage door opening.

I did the excavation, and the footings are at the different depths, the wall next to the house has a deeper footing than the opposite wall.

What is the proper way to approach this, how do I raise the deeper footing to match the opposite one?

Thank you

 

[freddiemercurystwin]

Some blockwork.

 

[firapara]

Some blockwork.

Just some 7.3N concrete blocks?

 

[freddiemercurystwin]

Sure.

 

[^woody^]

You just span the lintel across. The foundation depths either side are irrelevant.

 

[freddiemercurystwin]

Not if they're different heights silly.

 

[firapara]

Thanks guys, will use some blocks

 

[^woody^]

Not if they're different heights silly.

And there's me thinking it was clear. Here you go, for you for clarity.

 

[freddiemercurystwin]

Are you saying he should pocket the lintels into the existing walls?

 

[^woody^]

Of course, its a lintel.

 

[freddiemercurystwin]

Do you need a lie down woody?

 

[firapara]

I have built up the difference with 7N concrete blocks and placed the lintels on existing footings.
BC is happy.

Thank you guys.

 

[^woody^]

Do you need a lie down woody?

Perhaps you do, you seem shocked that a lintel has bearings. In fact, I'll have a sit down on the strength of that.

 

[freddiemercurystwin]

Silly me, knocking a few blocks out of the existing wall would have been much easier.

 

[Ivor Windybottom]

I'm amazed that BC are actually approving of this method. I'll stick to the old way of putting in a foundation when I do mine.

Are concrete lintels approved for use below DPC, potentially saturated wet? I'd worry the reinforcement would corrode and blow apart.

Plus it puts a fairly hefty load on two unconnected wall ends.