"Phil L" wrote in message
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51 wrote:
"Phil L" wrote in message
k...
51 wrote:
Hi all.
I have half a plan to open up a wall between the lounge and dining
room to install french doors or similair.
Some of you may remember how I once descibed my ground level
floating floors being supported on 3" deep joists with a sleeper
wall. So what precautions should I use to avoid buggering up the floors
if I use props to support the wall before I install a lintel?

I'm not sure if the wall is single or double brick.
The wall is shown here as a - b www.tally-mo.com

Thanks.

Arthur

You don't know if it's single or double brick? - have you not tried
using a tape measure? - about 5 inch is a single wall and about 10
inch is a double wall.

Either way, this wall is a supporting wall, it looks like it's
carrying the wall seperating bedrooms and also carrying floor joists
upstairs so it will need substantial support...a few questions...
1) what width opening are you aiming for?
2) how high will the opening be? - are yoiu going all the way up to
the ceiling or is it to be similar to a wide door opening?
3) who is doing the work?


The upper floor joists run parallel to this wall.
Opening for double french doors upto standard door height.
The upper half of this wall is single brick so safe to assume all of
it is single brick.
I did a wall opening by myself about ten years ago though this was
about 4' wide.
I didn't know about the 3" joists back then and the floor hasn't
suffered as far as I
can tell. But at that time the other side of that wall was a concrete
kitchen floor.

This time though, I will probably hire men to do it.

Arthur

The wall isn't built on the downstairs joists, it's built on concrete,

I know that.

if you can get underneath your floorboards you will see that the wall
continues down to the foundations.
This will need a steel gidrer installing to hold up the wall above - a
pressed steel lintel is no good over this kind of span at 100mm
wide....floorboards will probably have to be lifted in order to use acrow
props because they need to stand on something solid, 3" joists are not
suitable


Have you used the type of props that are used from one side and replace the
need
from props on both sides?

I think these are type
http://www.hss.com/g/50049/Strongboy_Hirepack.html

Arthur