Removing some bricks from the outer skin of our cavity wall we discovered wall appears to be continuous runs of metal wire every few courses:
They look to be very similar gauge to the wall ties and so I am assuming they are performing a similar role, albeit laterally within the same wall as opposed to between each leaf. If this the case, why?
Looks like it must be some sort of reinforcing. But I've not seen it
done in that way - and and struggling to see why they would one a lower
course. On the top of a wall, I could see some point.
The lower thingy is of course a wall tie to the block skin.
On Thursday, 9 August 2018 20:11:22 UTC+1, Tim Watts wrote:
Yes, and I think I've now found what appears to be what it is:
To quote: 'Where large format masonry units are stacked one above the other
, the lack of bonding between them will greatly reduce the overall flexural
strength of the panel and the ability of the wall to spread vertical loads
. The use of Ancon reinforcement referenced AMR/S/D3.5/W60 is normally reco
mmended at vertical centres no greater than 300mm, usually every course or
every other course depending on the height of the masonry unit.'
As you can see from this picture I do indeed have 225mm high bricks in the
Those look like sandstone 'bricks' which the local
planning dept probably insisted on.
If that wall is going to be an internal wall and removed
after an RSJ is inserted, you might as well try and remove
them without damage. They are probably worth more than
humble bricks and could be re-used to build your new outer
On Thursday, 9 August 2018 20:46:58 UTC+1, Andrew wrote:
Yes; that's the plan. If you notice on http://www.newtonnet.co.uk/permanent
/wallmetal2.jpg I have built a partition wall within the existing lounge (c
omplete with the original doors and windows from the back wall to still giv
e us some light) in part so that the builders can knock through and reuse t
he bricks in the new outer skin. Not only does it cut the cost of some bric
ks but will also of course ensure a perfect match which I had previously st
ruggled to get.
Don't quite follow. Was this spanning a gap? The usual use for expanded
metal is to provide a key and some strength for rendering. Is that
several layers of expanded metal in one layer of muck, or several brick
courses each reinforced with a single layer? I can see that providing
*some* strength, but not really being a substitute for an RSJ.
The question arose over supporting a studwork gable over double garage
doors. There is a central pier so I suppose the spans would have been
Each course reinforced. Top in compression, bottom tension.
We have a horizontal brick *arch* in the farmhouse with no visible
strengthening. Used as a dairy at some time so wide enough to get the
milk cart in. Look like Flettons so perhaps not that old. Pre-war to my
That's the important thing.
There's a row of teraced houses near me, probably 1880's.
They all have full height front bays with brick pillar corners
and fairly shallow arched brickwork over the windows.
Not surprisingly, all the arches are patched up with mortar
repairs, because they just push the brick pillars outwards.
They work fine when the wall either side provides substantial
[email address is not usable -- followup in the newsgroup]
As a very amateur brick layer, decades ago, I built a brick BBQ. It
didn't survive use and heat for long, before the upper bricks began to
loosen. So I decided to rebuild it with some wire reinforcing between
the course. That then lasted for decades until I decided we no longer
had a use for it. It took a considerable amount of effort to demolish
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