I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets - fed
by water from the fire brigade could be a fast response solution where high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.

"DerbyBorn" wrote in message
2.222...
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets - fed
by water from the fire brigade could be a fast response solution where
high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.

It does seem strange that old buildings like that don't have some form of
sprinkler or dry riser fitted to meet current fire safety laws. And at least
all the pipework would be hidden in the space above the stone ceiling and
wouldn't be on show to disfigure the appearance.

It would have been ironic if part of the modernisation work that was carried
out had been to install such a dry riser.

There was an interesting interview on inside Science about the problem of
wooden buildings this last week.
Incidentally, my screenreader says. notra Dame as in panto.
Brian

--
----- --
This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

Blind user, so no pictures please
Note this Signature is meaningless.!
"DerbyBorn" wrote in message
2.222...
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets - fed
by water from the fire brigade could be a fast response solution where
high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.

On 4/20/2019 8:22 PM, Tim Streater wrote:
In article , Brian Gaff
wrote:

There was an interesting interview on inside Science about the problem
of wooden buildings this last week.
Incidentally, my screenreader says. notra Dame as in panto.

In an American accent ?

That would be No-ter Daym, wouldn't it?

On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets - fed
by water from the fire brigade could be a fast response solution where high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.

I don't think "a few strategic jets" is as simple as it sounds. You need
widely distributed sprays, plus good drainage routes for the inner stone
vault.

newshound wrote in
:

On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets
- fed by water from the fire brigade could be a fast response
solution where high reach appliances take a long time to be deployed
and may not be high enough.

Imagine a pipe on the roof to act as a big sprinkler - early
deployment would have killed the fire. Cost - some pipes.

I don't think "a few strategic jets" is as simple as it sounds. You
need widely distributed sprays, plus good drainage routes for the
inner stone vault.


It could provide a safe area for firefighters to work from - coupling their
hoses to the pipes to direct water more strategically. We had the situation
where the firefighters were having difficulty getting to the ideal height.

"DerbyBorn" wrote in message
2.222...
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets - fed
by water from the fire brigade could be a fast response solution where
high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.

And the damage to the priceless contents when a
small portable extinguisher could have put a small
fire out with no damage to the priceless contents.

Even the CO2/freon dump systems used in massive
great computer installations wouldn’t be viable
because the worst of the geriatrics would be able
to be evacuated quickly enough.

If there was a best approach, we would have found it by now.

DerbyBorn wrote:

It could provide a safe area for firefighters to work from - coupling their
hoses to the pipes to direct water more strategically. We had the situation
where the firefighters were having difficulty getting to the ideal height.

Apparently the french firefighters prefer to attack the fire from inside
the building anyway, which might explain why they appeared to have few
aerial platforms in use on the night.

On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets - fed
by water from the fire brigade could be a fast response solution where high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.


The roof is deigned to be waterproof, so you would need a system that
worked inside the roof space to do any good before the fire broke
through the lead cladding. That would have to be rather more complicated
than just a pipe on the roof.

Better IMO to rebuilding it on a metal framework, making inherently
non-flammable. The roof is relatively modern, so nothing would really be
lost by making it of modern materials, so long as it looked the same
from the outside.

--
--

Colin Bignell

Nightjar wrote in
:

On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets
- fed by water from the fire brigade could be a fast response
solution where high reach appliances take a long time to be deployed
and may not be high enough.

Imagine a pipe on the roof to act as a big sprinkler - early
deployment would have killed the fire. Cost - some pipes.


The roof is deigned to be waterproof, so you would need a system that
worked inside the roof space to do any good before the fire broke
through the lead cladding. That would have to be rather more
complicated than just a pipe on the roof.

Better IMO to rebuilding it on a metal framework, making inherently
non-flammable. The roof is relatively modern, so nothing would really
be lost by making it of modern materials, so long as it looked the
same from the outside.


....and there are no longer loads of forests of Oak Trees to build was
ships.

On 21/04/2019 09:27, DerbyBorn wrote:
Nightjar wrote in
:

On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets
- fed by water from the fire brigade could be a fast response
solution where high reach appliances take a long time to be deployed
and may not be high enough.

Imagine a pipe on the roof to act as a big sprinkler - early
deployment would have killed the fire. Cost - some pipes.


The roof is deigned to be waterproof, so you would need a system that
worked inside the roof space to do any good before the fire broke
through the lead cladding. That would have to be rather more
complicated than just a pipe on the roof.

Better IMO to rebuilding it on a metal framework, making inherently
non-flammable. The roof is relatively modern, so nothing would really
be lost by making it of modern materials, so long as it looked the
same from the outside.


...and there are no longer loads of forests of Oak Trees to build was
ships.

I visited the roof space on Lincoln Cathedral a few years. The tour cost
£3 and was possibly the best £3 ever spent. Similar general age to Notre
Dame again with a wooden framed roof made from huge oak beams. To ensure
they have suitable beams for renovation work, they have unused beams
ageing in the roof space ready. They've been buying them whenever they
had money and such wood was available. Of course a fire in the roof
space would destroy their own spares too.

If you get the chance, it's well worth visiting.

On Sun, 21 Apr 2019 10:35:45 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


And the damage to the priceless contents when a
small portable extinguisher could have put a small
fire out with no damage to the priceless contents.

Even the CO2/freon dump systems used in massive
great computer installations wouldn¢t be viable
because the worst of the geriatrics would be able
to be evacuated quickly enough.

If there was a best approach, we would have found it by now.

Darn, now it's Notre Dame this senile asshole from Oz knows everything
better about again! LMAO

--
Bod addressing senile Rot:
"Rod, you have a sick twisted mind. I suggest you stop your mindless
and totally irresponsible talk. Your mouth could get you into a lot of
trouble."
Message-ID:

mm0fmf wrote in :

On 21/04/2019 09:27, DerbyBorn wrote:
Nightjar wrote in
:

On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic
jets - fed by water from the fire brigade could be a fast response
solution where high reach appliances take a long time to be
deployed and may not be high enough.

Imagine a pipe on the roof to act as a big sprinkler - early
deployment would have killed the fire. Cost - some pipes.


The roof is deigned to be waterproof, so you would need a system
that worked inside the roof space to do any good before the fire
broke through the lead cladding. That would have to be rather more
complicated than just a pipe on the roof.

Better IMO to rebuilding it on a metal framework, making inherently
non-flammable. The roof is relatively modern, so nothing would
really be lost by making it of modern materials, so long as it
looked the same from the outside.


...and there are no longer loads of forests of Oak Trees to build was
ships.

I visited the roof space on Lincoln Cathedral a few years. The tour
cost £3 and was possibly the best £3 ever spent. Similar general age
to Notre Dame again with a wooden framed roof made from huge oak
beams. To ensure they have suitable beams for renovation work, they
have unused beams ageing in the roof space ready. They've been buying
them whenever they had money and such wood was available. Of course a
fire in the roof space would destroy their own spares too.

If you get the chance, it's well worth visiting.


Thanks - hope the weight isn't a problem. Would enjoy that tour. I like
to go behind the scenes.

On 21/04/2019 10:40, Jethro_uk wrote:
On Sun, 21 Apr 2019 09:33:24 +0100, mm0fmf wrote:

Of course a fire in the roof space would destroy their own spares too.

Thus cancelling out the foresight of acquiring them. It's a like having
your backups on site ....


I wonder if there's business potential in offering storage for
architectural material ?


The guide did say in a major fire all bets are off.

They stored them in the roof as they had the environment and space and
it didn't cost anything. That probably puts pay to that idea. They
didn't have enough for a full rebuild, just for planned repairs. I
think, but maybe wrong, that the guide said some beams had been waiting
there for 50+ years.

On Sun, 21 Apr 2019 09:40:00 -0000 (UTC), Jethro_uk wrote:

Of course a fire in the roof space would destroy their own spares
too.

Thus cancelling out the foresight of acquiring them.

Depends on the reason for having them, major fire is a bit pointless
but having decent sized lumps of wood available for replacement of
parts of the roof structure damaged by rot or worm seems enimently
sensible.


--
Cheers
Dave.

On 21/04/2019 09:24, Nightjar wrote:
On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets -
fed
by water from the fire brigade could be a fast response solution where
high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.


The roof is deigned to be waterproof, so you would need a system that
worked inside the roof space to do any good before the fire broke
through the lead cladding. That would have to be rather more complicated
than just a pipe on the roof.

Better IMO to rebuilding it on a metal framework, making inherently
non-flammable. The roof is relatively modern, so nothing would really be
lost by making it of modern materials, so long as it looked the same
from the outside.


There must be tons of molten, now solidified lead piled up
somewhere, imposing a nasty non-distributed load up on
that 'roof' somewhere. It can't have all poured down to
terra-colder.

On 21/04/2019 10:40, Jethro_uk wrote:
On Sun, 21 Apr 2019 09:33:24 +0100, mm0fmf wrote:

Of course a fire in the roof space would destroy their own spares too.

Thus cancelling out the foresight of acquiring them. It's a like having
your backups on site ....

They may have other backups on other sites.
You can't really put enough timber in the roof space to rebuild it
unless it was massively over engineered so it can take the load.

They can sell them to ND at an enormous profit.

In article , Andrew Andrew97d-
scribeth thus
On 21/04/2019 09:24, Nightjar wrote:
On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets -
fed
by water from the fire brigade could be a fast response solution where
high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.


The roof is deigned to be waterproof, so you would need a system that
worked inside the roof space to do any good before the fire broke
through the lead cladding. That would have to be rather more complicated
than just a pipe on the roof.

Better IMO to rebuilding it on a metal framework, making inherently
non-flammable. The roof is relatively modern, so nothing would really be
lost by making it of modern materials, so long as it looked the same
from the outside.


There must be tons of molten, now solidified lead piled up
somewhere, imposing a nasty non-distributed load up on
that 'roof' somewhere. It can't have all poured down to
terra-colder.

Course if that'd had been the UK the Pikey's would that had it away over
the weekend ;!..

As is their won't..

--
Tony Sayer


Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

In article 2,
DerbyBorn scribeth thus
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets - fed
by water from the fire brigade could be a fast response solution where high
reach appliances take a long time to be deployed and may not be high
enough.

Imagine a pipe on the roof to act as a big sprinkler - early deployment
would have killed the fire. Cost - some pipes.

May well have slowed it down ..


However now that the damage has been done thin "ish" section Steel cold
dipped galvanised roof trusses and a coated ally roof materials .

No fire problems as nothing to burn

--
Tony Sayer


Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

In article 2,
DerbyBorn scribeth thus
newshound wrote in
:

On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic jets
- fed by water from the fire brigade could be a fast response
solution where high reach appliances take a long time to be deployed
and may not be high enough.

Imagine a pipe on the roof to act as a big sprinkler - early
deployment would have killed the fire. Cost - some pipes.

I don't think "a few strategic jets" is as simple as it sounds. You
need widely distributed sprays, plus good drainage routes for the
inner stone vault.


It could provide a safe area for firefighters to work from - coupling their
hoses to the pipes to direct water more strategically. We had the situation
where the firefighters were having difficulty getting to the ideal height.

Would have thought that the risers and hoses were up in the main towers
they have that at Ely cathedral..

--
Tony Sayer


Man is least himself when he talks in his own person.

Give him a keyboard, and he will reveal himself.

On Sunday, April 21, 2019 at 12:03:28 PM UTC+1, DerbyBorn wrote:
mm0fmf wrote in :

On 21/04/2019 09:27, DerbyBorn wrote:
Nightjar wrote in
:

On 20/04/2019 17:16, DerbyBorn wrote:
I realise the risks with sprinklers and the very high cost of their
instalations - but surely a simple dry riser to a few strategic
jets - fed by water from the fire brigade could be a fast response
solution where high reach appliances take a long time to be
deployed and may not be high enough.

Imagine a pipe on the roof to act as a big sprinkler - early
deployment would have killed the fire. Cost - some pipes.


The roof is deigned to be waterproof, so you would need a system
that worked inside the roof space to do any good before the fire
broke through the lead cladding. That would have to be rather more
complicated than just a pipe on the roof.

Better IMO to rebuilding it on a metal framework, making inherently
non-flammable. The roof is relatively modern, so nothing would
really be lost by making it of modern materials, so long as it
looked the same from the outside.


...and there are no longer loads of forests of Oak Trees to build was
ships.

I visited the roof space on Lincoln Cathedral a few years. The tour
cost £3 and was possibly the best £3 ever spent. Similar general age
to Notre Dame again with a wooden framed roof made from huge oak
beams. To ensure they have suitable beams for renovation work, they
have unused beams ageing in the roof space ready. They've been buying
them whenever they had money and such wood was available. Of course a
fire in the roof space would destroy their own spares too.

If you get the chance, it's well worth visiting.


Thanks - hope the weight isn't a problem. Would enjoy that tour. I like
to go behind the scenes.

In a similar vein, you can do a tour of Reims Cathedral roof space. Their solution was to rebuild it (it was destroyed in WW1) out of reinforced concrete beams but constructed as if they were timbers.

https://commons.wikimedia.org/wiki/F...echarpente.JPG

--
Halmyre

On 21/04/2019 12:05, mm0fmf wrote:
On 21/04/2019 10:40, Jethro_uk wrote:
On Sun, 21 Apr 2019 09:33:24 +0100, mm0fmf wrote:

Of course a fire in the roof space would destroy their own spares too.

Thus cancelling out the foresight of acquiring them. It's a like having
your backups on site ....


I wonder if there's business potential in offering storage for
architectural material ?


The guide did say in a major fire all bets are off.

They stored them in the roof as they had the environment and space and
it didn't cost anything. That probably puts pay to that idea. They
didn't have enough for a full rebuild, just for planned repairs. I
think, but maybe wrong, that the guide said some beams had been waiting
there for 50+ years.




The great point of that idea is that they are then beautifully
conditioned and ready to use.

On 22/04/2019 07:18, Halmyre wrote:


In a similar vein, you can do a tour of Reims Cathedral roof space. Their solution was to rebuild it (it was destroyed in WW1) out of reinforced concrete beams but constructed as if they were timbers.

https://commons.wikimedia.org/wiki/F...echarpente.JPG

That's amazing! Sometimes the French do astonishingly sensible things.

On 21/04/2019 22:49, tony sayer wrote:
In article , Andrew Andrew97d-
scribeth thus

There must be tons of molten, now solidified lead piled up
somewhere, imposing a nasty non-distributed load up on
that 'roof' somewhere. It can't have all poured down to
terra-colder.

Course if that'd had been the UK the Pikey's would that had it away over
the weekend ;!..

As is their won't..

(Unusual example of a superfluous apostrophe.)

--
Max Demian

On Sunday, 21 April 2019 09:33:32 UTC+1, mm0fmf wrote:
I visited the roof space on Lincoln Cathedral a few years. The tour cost
£3 and was possibly the best £3 ever spent. Similar general age to Notre
Dame again with a wooden framed roof made from huge oak beams. To ensure
they have suitable beams for renovation work, they have unused beams
ageing in the roof space ready. They've been buying them whenever they
had money and such wood was available. Of course a fire in the roof
space would destroy their own spares too.

Apparently an Oxford college was looking round for some replacement oak beams when it discovered it owned a small woodland somewhere and there were some 500-year-old trees that had been planted when the college was built, for that purpose.

That's planning ahead.

Owain

In article ,
wrote:
On Sunday, 21 April 2019 09:33:32 UTC+1, mm0fmf wrote:
I visited the roof space on Lincoln Cathedral a few years. The tour
cost £3 and was possibly the best £3 ever spent. Similar general age
to Notre Dame again with a wooden framed roof made from huge oak
beams. To ensure they have suitable beams for renovation work, they
have unused beams ageing in the roof space ready. They've been buying
them whenever they had money and such wood was available. Of course a
fire in the roof space would destroy their own spares too.

Apparently an Oxford college was looking round for some replacement oak
beams when it discovered it owned a small woodland somewhere and there
were some 500-year-old trees that had been planted when the college was
built, for that purpose.

That's planning ahead.

At Balmoral, a few years ago, a new wood was planted and the factor (land
agent) said harvesting would happen in about 500 year's time.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

On 22/04/2019 11:15, wrote:
On Sunday, 21 April 2019 09:33:32 UTC+1, mm0fmf wrote:
I visited the roof space on Lincoln Cathedral a few years. The tour cost
£3 and was possibly the best £3 ever spent. Similar general age to Notre
Dame again with a wooden framed roof made from huge oak beams. To ensure
they have suitable beams for renovation work, they have unused beams
ageing in the roof space ready. They've been buying them whenever they
had money and such wood was available. Of course a fire in the roof
space would destroy their own spares too.

Apparently an Oxford college was looking round for some replacement oak beams when it discovered it owned a small woodland somewhere and there were some 500-year-old trees that had been planted when the college was built, for that purpose.

That's planning ahead.


I think that's actually an example of the durability of chestnut

http://quietbabylon.com/2009/on-oak-...ingency-plans/





--
Robin
reply-to address is (intended to be) valid

In article ,
Jethro_uk wrote:
On Mon, 22 Apr 2019 12:52:18 +0100, charles wrote:

In article ,
wrote:
On Sunday, 21 April 2019 09:33:32 UTC+1, mm0fmf wrote:
I visited the roof space on Lincoln Cathedral a few years. The tour
cost £3 and was possibly the best £3 ever spent. Similar general age
to Notre Dame again with a wooden framed roof made from huge oak
beams. To ensure they have suitable beams for renovation work, they
have unused beams ageing in the roof space ready. They've been buying
them whenever they had money and such wood was available. Of course a
fire in the roof space would destroy their own spares too.

Apparently an Oxford college was looking round for some replacement oak
beams when it discovered it owned a small woodland somewhere and there
were some 500-year-old trees that had been planted when the college was
built, for that purpose.

That's planning ahead.

At Balmoral, a few years ago, a new wood was planted and the factor
(land agent) said harvesting would happen in about 500 year's time.

Assuming it's been pollarded (?) and attended to correctly ???

pollarding oaks? I don't think so.

--
from KT24 in Surrey, England
"I'd rather die of exhaustion than die of boredom" Thomas Carlyle

In message , tony sayer
writes
However now that the damage has been done thin "ish" section Steel cold
dipped galvanised roof trusses and a coated ally roof materials .

Surely you mean hot dipped galvanised?

Painted to protect it from acid and sulphides in rain, that should last
for ever.
Not totally sure about coated ally, having had two Land Rovers.
--
Bill

On Monday, 22 April 2019 20:10:25 UTC+1, Bill wrote:
In message , tony sayer
writes

However now that the damage has been done thin "ish" section Steel cold
dipped galvanised roof trusses and a coated ally roof materials .

Surely you mean hot dipped galvanised?

Painted to protect it from acid and sulphides in rain, that should last
for ever.
Not totally sure about coated ally, having had two Land Rovers.

'Well we tried to cold dip it, but encountered some resistance'

Galv is good but no hope of it lasting a century, let alone several.


NT

"Jethro_uk" wrote in message
...
On Mon, 22 Apr 2019 16:31:24 +0100, charles wrote:

In article ,
Jethro_uk wrote:
On Mon, 22 Apr 2019 12:52:18 +0100, charles wrote:

In article ,
wrote:
On Sunday, 21 April 2019 09:33:32 UTC+1, mm0fmf wrote:
I visited the roof space on Lincoln Cathedral a few years. The
tour cost £3 and was possibly the best £3 ever spent. Similar
general age to Notre Dame again with a wooden framed roof made
from huge oak beams. To ensure they have suitable beams for
renovation work, they have unused beams ageing in the roof space
ready. They've been buying them whenever they had money and such
wood was available. Of course a fire in the roof space would
destroy their own spares too.

Apparently an Oxford college was looking round for some replacement
oak beams when it discovered it owned a small woodland somewhere and
there were some 500-year-old trees that had been planted when the
college was built, for that purpose.

That's planning ahead.

At Balmoral, a few years ago, a new wood was planted and the factor
(land agent) said harvesting would happen in about 500 year's time.

Assuming it's been pollarded (?) and attended to correctly ???

pollarding oaks? I don't think so.

Hence the "?". But I'm sure there's more to providing the
timber suitable for such buildings (or the old oak built
ships) than leaving a few acres untouched for centuries.

Yes, its mostly done by thinning.

So my point stands. If you lose that skill, you've lost the timber.

No skill involved with thinning and easy to document how to do that.

On 22/04/2019 21:48, wrote:
On Monday, 22 April 2019 20:10:25 UTC+1, Bill wrote:
In message , tony sayer
writes

However now that the damage has been done thin "ish" section Steel cold
dipped galvanised roof trusses and a coated ally roof materials .

Surely you mean hot dipped galvanised?

Painted to protect it from acid and sulphides in rain, that should last
for ever.
Not totally sure about coated ally, having had two Land Rovers.

'Well we tried to cold dip it, but encountered some resistance'

Galv is good but no hope of it lasting a century, let alone several.


NT


What do you think is going to happen to proper hot dip galvanised struts
inside the dry roof space?

wrote in message
...
On Monday, 22 April 2019 20:10:25 UTC+1, Bill wrote:
In message , tony sayer
writes

However now that the damage has been done thin "ish" section Steel cold
dipped galvanised roof trusses and a coated ally roof materials .

Surely you mean hot dipped galvanised?

Painted to protect it from acid and sulphides in rain, that should last
for ever.
Not totally sure about coated ally, having had two Land Rovers.

'Well we tried to cold dip it, but encountered some resistance'

Galv is good but no hope of it lasting a century, let alone several.

Thats bull****. I have galvanised beams in my flat roof. They have
been there for 45 years now with no sign of any deterioration at all.

On Monday, 22 April 2019 22:56:20 UTC+1, newshound wrote:
On 22/04/2019 21:48, tabbypurr wrote:
On Monday, 22 April 2019 20:10:25 UTC+1, Bill wrote:
In message , tony sayer
writes

However now that the damage has been done thin "ish" section Steel cold
dipped galvanised roof trusses and a coated ally roof materials .

Surely you mean hot dipped galvanised?

Painted to protect it from acid and sulphides in rain, that should last
for ever.
Not totally sure about coated ally, having had two Land Rovers.

'Well we tried to cold dip it, but encountered some resistance'

Galv is good but no hope of it lasting a century, let alone several.


NT


What do you think is going to happen to proper hot dip galvanised struts
inside the dry roof space?

condensation.


NT

On Tue, 23 Apr 2019 07:39:01 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:

FLUSH senile Ozzietard's latest troll****

Darn, even in this thread NO feedback for you, lonely senile cretin? And you
keep TRYING so hard! LMAO

--
Senile Rot about himself:
"I was involved in the design of a computer OS"
MID:

On Tue, 23 Apr 2019 08:15:17 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:



That¢s bull****. I have galvanised

Nobody gives a **** what you did or didn't, you abnormal lonely senile pest.
Get real!

--
"Anonymous" to trolling senile Rot Speed:
"You can **** off as you know less than pig **** you sad
little ignorant ****."
MID:

In message ,
writes
On Monday, 22 April 2019 22:56:20 UTC+1, newshound wrote:
On 22/04/2019 21:48, tabbypurr wrote:

What do you think is going to happen to proper hot dip galvanised struts
inside the dry roof space?

condensation.

All I know is that the fabricated steel fittings on our boat were welded
up and hot dip galvanised getting on for 35 years ago. They are mostly
painted, and show no sign of any corrosion, in spite of it being moored
or stored in the open in, often, pretty wild places.

Most of the galvanising was achieved by going to the back gate of the
galvanisers and offering cash to anyone who would sneak it in with the
next big job. For this reason, I don't know the thickness of the zinc
layer.

To be fair, the stainless fabrications have all survived as well, but
with some slight rust staining at the bolt holes.
The stainless (all 316 ish) came from scrap yards.
--
Bill

wrote in message
...
On Monday, 22 April 2019 22:56:20 UTC+1, newshound wrote:
On 22/04/2019 21:48, tabbypurr wrote:
On Monday, 22 April 2019 20:10:25 UTC+1, Bill wrote:
In message , tony sayer
writes

However now that the damage has been done thin "ish" section Steel
cold
dipped galvanised roof trusses and a coated ally roof materials .

Surely you mean hot dipped galvanised?

Painted to protect it from acid and sulphides in rain, that should
last
for ever.
Not totally sure about coated ally, having had two Land Rovers.

'Well we tried to cold dip it, but encountered some resistance'

Galv is good but no hope of it lasting a century, let alone several.


NT


What do you think is going to happen to proper hot dip galvanised struts
inside the dry roof space?

condensation.

Hasnt done any harm to mine.

On Tue, 23 Apr 2019 09:16:56 +1000, cantankerous trolling geezer Rodent
Speed, the auto-contradicting senile sociopath, blabbered, again:


condensation.

Hasn¢t done any harm to mine.

Are you talking about your senile head, you clinically insane trolling
senile asshole? BG

--
Bill Wright to Rot Speed:
"That confirms my opinion that you are a despicable little ****."
MID:

wrote:
On Monday, 22 April 2019 22:56:20 UTC+1, newshound wrote:
On 22/04/2019 21:48, tabbypurr wrote:
On Monday, 22 April 2019 20:10:25 UTC+1, Bill wrote:
In message , tony sayer
writes

However now that the damage has been done thin "ish" section Steel cold
dipped galvanised roof trusses and a coated ally roof materials .

Surely you mean hot dipped galvanised?

Painted to protect it from acid and sulphides in rain, that should last
for ever.
Not totally sure about coated ally, having had two Land Rovers.

'Well we tried to cold dip it, but encountered some resistance'

Galv is good but no hope of it lasting a century, let alone several.


NT


What do you think is going to happen to proper hot dip galvanised struts
inside the dry roof space?

condensation.


NT


A lot of people judge the effectiveness of galvanising by the state of
galvanised Iron Sheets on a barn or shed after a couple decades. What has
often happened with them was the coating was damaged upon installation by
nails banged through them or rough handling exposing the steel underneath.
Handled properly it should last a really long time but in a large building
it would be inevitable that eventually some tradesmen would drill a hole
for a cable,pipe or to fasten something.

GH