On 14/08/2019 23:14, Ben wrote:
..., my first
issue
and questions are around the second internal wall which connects to our
neighbour, there are 2 boards deep, im assuming fireboard and plasterboard.


Dont assume. MIGHT be just two plaster for sound insulation.


As I plan to re wire as I go and I also need to move a rad my questions
a

1. If I rip down all board, do I need to replace both? Or can I just
replace
fireboard? As I will be skimming Im assuming I could skim on top of
either.
Or use celcon blocks? better sound proofing and easy to cut channels for
wires and pipes in.


2 if I need to replace both are they staggered to improve strength?

They will be for sound as well.


My second set of questions are around the stud walls, when the plasterboard
came off Ive found that where I need to set the stud wall Im not in line
with any of the existing uprights and there are no noggins in the wall,
there
are also pipes running where I plan on putting one of the walls, my
questions
a

1 will the new stud walls be strong enough with the base timber bolted
to the
concrete floor below and the top timber bolted to the ceiling joists, with
uprights at 400mm centres? I want to avoid putting noggins in the wall if
possible as it means I will have to unnecessarily re route some pipework to
get noggins in.


Mmm. Strong yes, stiff?....I am concerned. 2.2 meters plus, floor to
ceiling is a long away to go and stay straight against a lateral load,
like someone leaning againsts it. Shame to end up with cracks because it
moved a couple of mm

Any way you could use, instead of noggins, say, a steel plate screwed to
existing wall and bolted to the end stud?


Im using 3€�x2€� c16 timber for the stud work, and I have 6€�x1€� to
put noggins in the ceiling to fix the top timber of the stud wall to.

Hope thats enough and not too much info.

4x2 is more normal for internal stud except the lightest and shortest run

6x1 sounds OK.


Look forward to your replies.

Ben



--
"The great thing about Glasgow is that if there's a nuclear attack it'll
look exactly the same afterwards."

Billy Connolly