Lintel into 100 mm brickwork

[krill]

Hi, I want to install a 3m load bearing lintel for a 2.7 opening, one end will have plenty of bearing but I want to fit the other end into a cavity wall which will only give me 100mm, what is the best way to do this? Any help appreciated

 

[Dereekoo]

put 200mm at the other end?

 

[krill]

put 200mm at the other end?

Hello Derek, I assume that’s an attempt at humour, sorry but not very helpful but if you have nothing better to do then so be it

 

[Deleted member 174758]

Surely 100mm is sufficient bearing?

 

[kingandy2nd]

100mm baring is fine as long as you have a suitable padstone or material for baring the lintel. Is a structural engineer involved? I’d expect them to spec it

 

[John D v2.0]

I don't think it was a joke, better to do that than start chopping 50mm off the end?

Is it an off the shelf lintel? As above you would need a structural engineer if you're using it outside the data sheet, unless you can get the manufacturer to do the design for you based on your own analysis.

Main thing non structurally speaking is don't go bridging your cavity, the end of the beam should be on the warm side of the cavity insulation.

 

[Dereekoo]

Hello Derek, I assume that’s an attempt at humour, sorry but not very helpful but if you have nothing better to do then so be it

Not really, just simple maths, your lintel is 3m long, you want to have 100mm at one end so the other end has to be 200. Of course it is possible that your question was trying to raise concerns about having only a 100 wall wall to bear on to, if so it was badly put. Then again, you may be asking how to do the work, as stated the question is badly worded and I assume you may be Albanian ( that is my attempt at humour)

 

[George_engineer]

I'd check with an engineer - most lintel manufacturers have a technical help.

The thin gauge steel lintels have some help from brickwork arching and manufacturers require the 150mm bearing + sufficient masonry on either side to ensure they reach their full load bearing capacity. If you've not got the 150mm and it's straight onto a perpendicular wall then you will need to check the lintel is strong/stiff enough for that application.