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Fitting an RSJ where Chimney was

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Bhupesh Parekh

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Oct 28, 2001, 4:11:03 PM10/28/01
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Hi,


In our house we used to have a Chimney in the Kitchen (this was before we
bought the house). There is a room above the kitchen where the chimney went
through, and then up into the roof. This has been removed both in the
kitchen and in the room above the kitchen. We have been told that we need to
fit an RSJ in place support the celing where the chimney used to be, but how
many do we fit?

I know that one has to go in the loft area since the chimney breast would
not have been reoved there so one is needed to support the ceiling there.

But Do I also need one in the ceiling in the kitchen (i.e. under the
floorboards in the room above the kitchen), to provide support there.

All help appreciated.

Many thanks.
Bhupesh Parekh

bhupesh...@hotmail.com

gerant

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Oct 28, 2001, 4:40:48 PM10/28/01
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What you describe looks extremely dangerous if I understand you correctly.
It appears that the chimney stack on the roof has been left supported only
by the chimney on the adjacent property.

I would suggest that you get a good local builder to look at the situation.

If the chimney removal was done properly ( with proper support for the
chimney stack) then you shouldn't need any further support by way of RSJs.
If it was not done properly then there is a strong possibility that the
chimney could collapse and bring both your chimney stack and your
neighbour's crashing through your roof.

I expect that somebody else will either confirm what I say or possibly throw
more light on the subject. Either way, it's better to be safe than sorry.
Watch for further replies.

Best of luck,

gerant


Peter Crosland

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Oct 28, 2001, 5:15:27 PM10/28/01
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As a matter of URGENCY contact a structural engineer and get his advice.

--
Regards from Peter Crosland g6...@hotmail.com
"Bhupesh Parekh" <bhupesh...@hotmail.com> wrote in message
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Bhupesh Parekh

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Oct 29, 2001, 4:56:33 PM10/29/01
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Hi,

Many thanks for the replies.

I was asking this question because the Mortgage co had put a retention on
the property until I query a few points

One of these point was this. The report mentions that I need to ensure the
chimney breast above has been properly secured after removal. Looking up at
the ceiling on the first floor I can see where the ceiling has cracked round
where the chimney should be.
I have not had a chance to go up there and have a look, but I intend to this
weekend.
The report mentions that there should be gallows and possibly RSJ supporting
the chimney.

I will have a look for this. But could some one describe what gallows look
like. I assume some metal supporting bracket?

If these are present and doing their job then all should be OK - I hope!

Many thanks

Bhupesh Parekh
bhupesh...@hotmail.com

Bhupesh Parekh <bhupesh...@hotmail.com> wrote in message
news:9rhsa7$on1$1...@newsg3.svr.pol.co.uk...

gerant

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Oct 29, 2001, 6:40:17 PM10/29/01
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The 'gallows' brackets will almost certainly be made of steel and they will
be at about 45 degrees to the main wall pointing upwards from a position
below the remains of the chimney breast.

The cracking in the ceiling may be only cosmetic. If the 'gallows' brackets
are there you will probably only need to tidy up the cracks with a bit of
plaster or filler.

gerant


Hugo Nebula

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Oct 30, 2001, 2:31:51 PM10/30/01
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From the chaotic regions of the Cryptosphere, "gerant"
<ger...@lasalle44.freeserve.co.uk> wrote on Sun, 28 Oct 2001 21:40:48
-0000:

>If it was not done properly then there is a strong possibility that the
>chimney could collapse and bring both your chimney stack and your
>neighbour's crashing through your roof.
>
>I expect that somebody else will either confirm what I say or possibly throw
>more light on the subject. Either way, it's better to be safe than sorry.

Correct. Not to be alarmist, but I have seen the aftermath of an
unsupported chimney which collapsed through a bedroom ceiling narrowly
missing a baby's cot.
--
Hugo Nebula
"The centre of the Universe is a very crowded place"
- J G Thirlwell

John Armstrong

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Nov 1, 2001, 4:02:50 PM11/1/01
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On Mon, 29 Oct 2001 21:56:33 -0000, "Bhupesh Parekh"
<bhupesh...@hotmail.com> wrote:

>Hi,
>
>Many thanks for the replies.
>
>I was asking this question because the Mortgage co had put a retention on
>the property until I query a few points
>
>One of these point was this. The report mentions that I need to ensure the
>chimney breast above has been properly secured after removal. Looking up at
>the ceiling on the first floor I can see where the ceiling has cracked round
>where the chimney should be.

This could just be the new plaster shrinking where it meets the old,
but check.


>I have not had a chance to go up there and have a look, but I intend to this
>weekend.
>The report mentions that there should be gallows and possibly RSJ supporting
>the chimney.
>
>I will have a look for this. But could some one describe what gallows look
>like. I assume some metal supporting bracket?

Gallows bracket :
--------
| /
| /
| /
|/
|
|

>
>If these are present and doing their job then all should be OK - I hope!


Normally the floor/ceiling doesn't join into the chimney, so the
joists don't get burned, something like :

JJJJJJJJJJJJJJJ CCCCCCCC JJJJJJJJJJJJJJJJJJJJ
J CC CC J
J CCCCCCCC J
J J
JJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJJ

where C is the chimney and J are the joists, so I wouldn't have
thought additional support would be needed for these, but as others
have said it is the top part of the chimney you need to worry about.

--
John

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