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Seating an RSJ into a brick wall ... ?

37K views 33 replies 4 participants last post by  john1 
#1 ·
Hi,

Looking for advice on how to seat an RSJ into a brick wall.
This is quite a common piece of building work,
but i have been unable to find out much on the web.

Apart from one snippet i found,
the regulations no longer allow supporting beams to be set
into chimney-work.

I wont be seating this RSJ into any chimney-work.

Looking for reliable advice,
John :)
 
#2 ·
Hi..All RSJ's should be set on a concrete pad stone..
It should be the thickness of at least 4 common house bricks..and set into the wall by at least 12 inches...to make up any gaps between RSJ and brickwork use roofing slates..
Most builders yards sell pad stones..in various sizes..
 
#3 ·
Thank you blues_harp28,

Could you direct me to any sites dealing with this sort of thing,
there are several questions arising from this .....

I should add that i live in England, and the rules here may not
be the same as the rules in your country,

Unless your country is also England of course!

Regards, John :)
 
#6 ·
ok !

I live inside the M25 myself.
Pleased to meet you.

I am quite confused about this page,
it is about joist spans
i wonder if you could shed some light on it ...
i realise its not english, but i couldn't find an english one.
i will try to find the full url.
sorry my one finger typing is so slow.

dunno if that pic has gone in or not ...
 

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#13 ·
yes, i got to that page ...
i entered each bit one at a time, didn't notice anything missing,
the one about a kitchen extension .... yes ?

Not quite what i am doing here,
i'm not knocking anything down, just a bit of strengthening.
I will PM with more details, and pics if needed.
 
#18 ·
More info..two 6x3 sawn joists..run from brick wall to brickwall..set 3-4 feet from window wall and 3-4 feet from ajoining wall..run opposte to ceiling joists..
Set 6-9 inches into brickwork..
Cover with plasterboard..don't completely cut plasterboard to bend around joist..
As your making no structual change to the building no permission from council is needed..
 
#19 ·
so any idea what counts as 'another room'

size?
having a window?

i have searched around for ages over this,
but found no clear answers yet.

my opinion is 'access'

An outside loo is not accessible from within the home,
so i don't think that counts.
 
#25 ·
What is an RSJ? I am more familiar with Microlam, Paralam, and Structural beam. If it is a beam for load bearing then here in the US the code says that all members bearing on masonry shall be not less than 4" and if bearing on wood not less than 3", so if the end of the beams rest on masonry, you need 4", if it will sit on wood then 3" is needed. Keep in mind that any load bearing member must be bearing to the footing. (This means that you need 3 2x's under each end, and you must have solid blocking under the subfloor to the foundation)
 
#26 ·
Hi jackrabbit,

RSJ is a Brit term used loosely for supporting steelwork beams in
buildings.
The letters RSJ stand for 'rigid steel joist' and yes we have regulations
governing all sorts of methods of use and conditions for such members in
building work, here in England.

The names you mentioned are not familiar to me and sound like proprietory
terms to me.

I had intended to use a length of steel joist to provide additional
support to my existing structure, purely for my own reassurance, however
i am not going to use steelwork now.

After discussing options with 'blues_harp28' i've settled upon fitting a
wooden beam, similar to others in the house.
This is going to be a lot less trouble and effort, and will look like
the other beams, so i will be happy with that.

Thanks for your interest,

Cheers, John :)
 
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