Hello, I want to take down the walls between my kitchen and my dining area of my
through sitting/dining room. I am unsure whether this wall is a supporting wall.
The RSJ could sit on a column of interior wall left at the end wall of the house
and extend inwards perpendicular to the outside wall of the house. The other RSJ
could be supported on the corner of the wall of the garage which is inline with
the kitchen door, so forming an unsupported right angle instead of the dining
area wall and the wall with the kitchen door. I don't want to have to put a
column under this right angle joint in the RSJs as this would defeat the purpose
of removing the walls. I saw a similar unsupported right angle RSJs on George
Clarke's Ugly house to Beautiful house recently. How much do you think the RSJs
would cost and the building work required?
On 12/09/2019 05:28, firstname.lastname@example.org wrote:
I havn't quite unravelled the geometry. There is one case where an
(apparently) unsupported right angle might be justifiable, and that is
where there is a long RSJ on piers or a wall, possibly with a wall on
top of that (providing more weight). One (or both) ends could then be
extended a limited distance as a cantilever(s) supporting another RSJ at
right angles. In fact an RSJ could be supported on a pair of cantilevers
(think Car Port, if you like).
Only a structural engineer could tell you whether such a structure would
be compliant with building regs and it would all depend on the detail.
But it is not uncommon in industry, for example to provide a rail for a
small travelling hoist. You need more steel than you would for a more
conventional braced (triangulated) structure, but it can be done.
Common on a small scale in lots of corner shops with a door on the diagonal
across the corner, and normal corner above. As said, it is a cantilever wh
ich need enough downward force on the supported section - this could be sup
plied by weight above or something fixed to the ground the pull the support
ed section down. Also the length and leverage of the supported section is r
elevant. Basically, consult a structural engineer.
The house in question had an extension and the upper floor
ceiling opened up to give a vaulted ceiling and mezzanine.
The failure was not structural but non-compliance with
some aspects of fire safety or thermal regs.
A friend had a house with an L-shaped lounge dining area, with the two inte
rnal walls of the L being the kitchen. He wanted to convert then kitchen ad
ding part of the dining area to the kitchen and at the same time narrowing
the kitchen so both rooms became rectangular along side each other. As the
original kitchen walls supported other walls above he had to provide RSJs f
or that purpose. One RSJ went from one outer wall to another whilst the sec
ond RSJ was bolted to the first and extended T-shaped to another outer wall
. I do not know if this is similar to what the OP wants as I could not full
y make out what she had in mind, all I know that my friends T arrangement w
as kosher and he was able to show me the structural engineers drawings and
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