Yet Another Cycling Forum

Off Topic => The Pub => Topic started by: Jaded on 15 April, 2019, 06:20:50 pm

Title: Notre-Dame on fire, apparently...
Post by: Jaded on 15 April, 2019, 06:20:50 pm
Nothing more than that info so far.
Title: Re: Norte Dame on fire, apparently...
Post by: Jaded on 15 April, 2019, 06:22:22 pm
Update

Some grim Twitter footage here
https://mobile.twitter.com/Solwii/status/1117838050342645760?ref_src=twsrc%5Egoogle%7Ctwcamp%5Eserp%7Ctwgr%5Etweet
Title: Re: Norte Dame on fire, apparently...
Post by: Jurek on 15 April, 2019, 06:30:36 pm
That's pretty grim.
I would imagine similar if the Houses of Parliament were to go up.
1870 fire surpression systems weren't what they are today.
Title: Re: Norte Dame on fire, apparently...
Post by: andrewc on 15 April, 2019, 07:04:47 pm
Horrific.  The spire has collapsed.  https://twitter.com/patrickgaley/status/1117848909877895171
Title: Re: Norte Dame on fire, apparently...
Post by: Cudzoziemiec on 15 April, 2019, 07:19:27 pm
"What does that mean for world history?" asks CudzoJnr. Well, it means Notre Dame is "history" though I'm sure they'll rebuild it.
Title: Re: Norte Dame on fire, apparently...
Post by: Jaded on 15 April, 2019, 07:27:04 pm
It was crumbling badly and undergoing renovation.
Title: Re: Norte Dame on fire, apparently...
Post by: mattc on 15 April, 2019, 08:03:17 pm
Horrific.  The spire has collapsed.  https://twitter.com/patrickgaley/status/1117848909877895171
:(

@jaded have you noticed the typo in your title? Not looking for pedant points, just FYI. thought you'd want to know ...
Title: Re: Notre Dame on fire, apparently...
Post by: Torslanda on 15 April, 2019, 08:37:37 pm
It's on fire all right!

I've just heard on the Beeb news channel that the building is/was timber framed. Les Pompiers are on an absolute hiding to nothing. There isn't an amount of water they could hit that fire with and put it out. I'm willing to bet that tomorrow morning there won't be much left...
Title: Re: Norte Dame on fire, apparently...
Post by: andrewc on 15 April, 2019, 08:42:34 pm
I'm just looking at my pictures of the interior from last year.  Everything will be gone  :'(


Edit: "A glimmer of good news: all the artworks in #NotreDame have been saved, according to the ND priest. The treasure of the cathedral is intact, including the crown of thorns and the holy sacraments. Here’s hoping that the exterior structure will remain standing"


https://twitter.com/DrDenaGrayson/status/1117873021673283584


Title: Re: Norte Dame on fire, apparently...
Post by: Aunt Maud on 15 April, 2019, 08:44:26 pm
It'll have been a timber roof structure and masonry walls.

Title: Re: Norte Dame on fire, apparently...
Post by: rogerzilla on 15 April, 2019, 08:51:13 pm
I hope my favourite gargoyle survives.

They rebuilt York Minster and (also burnt just as renovations were finishing) Uppark.
Title: Re: Norte Dame on fire, apparently...
Post by: Jurek on 15 April, 2019, 08:51:58 pm
So sad.
My (ex)wife and I (Don't ask) were on the roof in the course of our honeymoon.
Title: Re: Norte Dame on fire, apparently...
Post by: Exit Stage Left on 15 April, 2019, 08:55:23 pm
It'll have been a timber roof structure and masonry walls.

The vaulted ceilings are stone. The roof structure sits on top of the masonry like a hat. I had a tour of Reims Cathedral in 1999. That had burned down in WW1, and the roof timbers were replicated in reinforced concrete to make it more fireproof. It was quite something to see pegged mortice and tenon joints in concrete.

Quote
One of the interesting features of the tour is the chance to go under the roof framework and walk the length of the building. This magnificent structure, originally done in wood, was destroyed by fire in World War I. The lead in the roof also melted and dripped out through the gargoyles. The structure was rebuilt with support from the French government and John D. Rockefeller Jr. The current roof structure is made of reinforced concrete. The entire building suffered significant damage during the war, and for a time the plan was to convert it to a memorial. Fortunately, the cathedral was restored and it re-opened in 1938.

(https://francetravelplanner.com/assets/champagne/reims_cathedral_roof4042.jpg)

https://francetravelplanner.com/go/champagne/reims/see/towers.html
Title: Re: Norte Dame on fire, apparently...
Post by: Mrs Pingu on 15 April, 2019, 09:17:02 pm
Gargoyles spewing molten lead. Now that would be quite a sight.
Title: Re: Norte Dame on fire, apparently...
Post by: Phil W on 15 April, 2019, 09:27:09 pm
https://mobile.twitter.com/SeriousCharly/status/1117846839850618880
Title: Re: Norte Dame on fire, apparently...
Post by: andyoxon on 15 April, 2019, 09:32:15 pm
Going to be disastrous by the looks of it.  Renovations seem to be high risk; remembering Cutty Sark (on a smaller scale)...
Title: Re: Notre-Dame on fire, apparently...
Post by: spesh on 15 April, 2019, 09:41:40 pm
I'm just looking at my pictures of the interior from last year.  Everything will be gone  :'(


Edit: "A glimmer of good news: all the artworks in #NotreDame have been saved, according to the ND priest. The treasure of the cathedral is intact, including the crown of thorns and the holy sacraments. Here’s hoping that the exterior structure will remain standing"


https://twitter.com/DrDenaGrayson/status/1117873021673283584

Also as luck would have it, the 18th-century copper statues around the spire had been removed a few days ago:

https://twitter.com/Paris_by_Elodie/status/1117847835058139141
Title: Re: Norte Dame on fire, apparently...
Post by: Aunt Maud on 15 April, 2019, 09:45:47 pm
It'll have been a timber roof structure and masonry walls.

The roof structure sits on top of the masonry like a hat.

'Tis in the nature of roofs.
Title: Re: Notre-Dame on fire, apparently...
Post by: Basil on 15 April, 2019, 10:48:20 pm
I'm so very very upset by this.  For three years I lived in a little apartment on L'île St Louis, just a couple of hundred metres from Notre dame.  I walked past it every day.  I sat in it on the occasional afternoon for organ practice and (non religious) contemplation.
I'm so worried about the rose window.  Reports I've seen suggest its not survived.. uncorroborated so far.
I'm fucking devastated.  :'(
Title: Re: Notre-Dame on fire, apparently...
Post by: Sergeant Pluck on 15 April, 2019, 10:52:04 pm
Going to be disastrous by the looks of it.  Renovations seem to be high risk; remembering Cutty Sark (on a smaller scale)...

Or the Primark fire:
https://www.theguardian.com/uk-news/video/2018/aug/28/fire-engulfs-roof-of-primark-outlet-in-central-belfast-video

Royal Marsden:
https://www.theguardian.com/uk/gallery/2008/jan/02/health

On a smaller scale, there are good reasons why there are insurance policies to cover having your house renovated.

I'm so very very upset by this.  For three years I lived in a little apartment on L'île St Louis, just a couple of hundred metres from Notre dame.  I walked past it every day.  I sat in it on the occasional afternoon for organ practice and (non religious) contemplation.
I'm so worried about the rose window.  Reports I've seen suggest its not survived.. uncorroborated so far.
I'm fucking devastated.  :'(

 :(

It’s terribly sad.




Title: Re: Notre-Dame on fire, apparently...
Post by: Basil on 15 April, 2019, 10:55:09 pm
Its that bloody Quasimodo smoking in bed, innit?
Title: Re: Notre-Dame on fire, apparently...
Post by: chrisbainbridge on 15 April, 2019, 11:18:39 pm
Also the art school in Glasgow (x2)
Major museum in Brazil as well and Windsor Castle.
Title: Re: Notre-Dame on fire, apparently...
Post by: Beardy on 15 April, 2019, 11:36:32 pm
The forthcoming rebuild of Notre Dame won’t be the first, but that doesn’t reduce the feeling of lose when seeing the pictures.
Hopefully the firefighters will be careful of their own safety though, because no matter how old or revered a building it is, it is only a building which can replaced. A firefighters life less so.
Title: Re: Notre-Dame on fire, apparently...
Post by: Diver300 on 16 April, 2019, 12:03:52 am
It seems that the vaulted stone ceiling is mainly still intact. The wooden roof above it is gone, but amazingly the falling bits of roof didn't take much of the stone ceiling down.

https://twitter.com/hashtag/NotreDame?src=tren&data_id=tweet%3A1117840323697414145&lang=en-gb (https://twitter.com/hashtag/NotreDame?src=tren&data_id=tweet%3A1117840323697414145&lang=en-gb)
Title: Re: Notre-Dame on fire, apparently...
Post by: Torslanda on 16 April, 2019, 07:43:23 am
Incredible WTF! moment last night as Sky newsreader said that Notre Dame had survived 'the Blitz'. Kids...
Title: Re: Notre-Dame on fire
Post by: T42 on 16 April, 2019, 08:18:05 am
Horrible to watch last night, especially when the spire fell. Felt like crying. Much has been saved, though.

Nice quotation: one of the church officials was allowed in this morning with the pompiers, and mentioned that the glided cross and a statue of the Virgin were still standing. Interviewer: "C'est un miracle?" Official: "Le miracle, c'est les pompiers."

Read last night that the builders of Notre Dame used timbers from an earlier church that was already several hundred years old, and some of its timbers had most likely been felled in the 7th and 8th centuries.

Two Parisian companies, Pinault and Arnault, have promised 300 million euros between them.

Title: Re: Notre-Dame on fire, apparently...
Post by: Ben T on 16 April, 2019, 08:58:50 am
Hope the hunchback survived.
Title: Re: Notre-Dame on fire, apparently...
Post by: Jaded on 16 April, 2019, 10:14:47 am
It seems that the vaulted stone ceiling is mainly still intact. The wooden roof above it is gone, but amazingly the falling bits of roof didn't take much of the stone ceiling down.

https://twitter.com/hashtag/NotreDame?src=tren&data_id=tweet%3A1117840323697414145&lang=en-gb (https://twitter.com/hashtag/NotreDame?src=tren&data_id=tweet%3A1117840323697414145&lang=en-gb)

Image 5 in this page shows a section of the vaulted ceiling.

https://www.bbc.co.uk/news/world-europe-47945465
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 16 April, 2019, 10:42:43 am
It seems that the vaulted stone ceiling is mainly still intact. The wooden roof above it is gone, but amazingly the falling bits of roof didn't take much of the stone ceiling down.

https://twitter.com/hashtag/NotreDame?src=tren&data_id=tweet%3A1117840323697414145&lang=en-gb (https://twitter.com/hashtag/NotreDame?src=tren&data_id=tweet%3A1117840323697414145&lang=en-gb)

Image 5 in this page shows a section of the vaulted ceiling.

https://www.bbc.co.uk/news/world-europe-47945465

That image makes me think that there might have been some cast-iron used in the 1840s/50s restoration of the roof.

The Houses of Parliament were constructed around then, and the roof is completely cast-iron. https://restorationandrenewal.parliament.uk/?page_id=311
Title: Re: Notre-Dame on fire, apparently...
Post by: Cudzoziemiec on 16 April, 2019, 10:50:48 am
This one seems all too appropriate for Easter:
(https://ichef.bbci.co.uk/news/976/cpsprodpb/10604/production/_106467076_053453979-1.jpg)
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 16 April, 2019, 10:57:44 am
Cast Iron was used after a fire at Chartres in the 1830s.

Quote
On June 4, 1836, following the carelessness of plumbers who were making repairs, a fire broke out in the roofing timbers of Chartres cathedral. The fire spread quickly, destroying the wood frame, the forest, and the cathedral's lead roof. Fortunately, the fire did not advance into the bell tower. There, the great bell was not harmed, sounding for half an hour. Many lower bells were lost, to be replaced in 1840 and 1845 by those still rung today.

The roof was replaced by a beautiful iron frame and a copper roof, built in metal for future safety and for economy, like the partial roof at Southwark Cathedral, London built during the restoration of 1822-25, and the cupola at Mayence [Mainz in Germany], built in 1827 (?). When built, the span over the cathedral's crossing (where the nave crosses the transept) was the largest of any iron-framed construction in Europe. The iron frame looks like a huge boat overturned. The framing has joists of wrought and cast iron, connected by rafters that ensure the rigidity of the structure.

https://www.abelard.org/france/using-metal-in-cathedral-construction.php

The fabric of churches built before 1905 is owned by the state in France, and they've been pretty unsentimental about originality in reconstruction in the past. The reference to 'plumbers' refers to working with lead, the roof cladding.
Title: Re: Notre-Dame on fire, apparently...
Post by: hellymedic on 16 April, 2019, 11:34:15 am
Just seen a LONG thread on Twitter about trees in Versailles, planted after the French Revolution to rebuild Notre Dame if needed. They are mature now. Seems moot if they are planes or oak...
Title: Re: Notre-Dame on fire, apparently...
Post by: Legs on 16 April, 2019, 11:44:36 am
Chap on the radio this morning was saying that the timber roof structure equated to 1400no oak trees!
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 16 April, 2019, 11:46:17 am
Bound to be oak forests. Europe has a vast quantity of high grade standing oak which would be suitable.

They would have to do some large scale structural repairs if they were going to use oak, as it would be extremely heavy in its green state.
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 16 April, 2019, 12:01:13 pm
On reflection, the visible metal is probably the scaffolding. The beams to repair the roof will be sourced widely. One of the Woodland Trust woods that Heather looks after provided some for the York Minster restoration, that was before WT owned it.

Quote
Although large parts of Miltonrigg Woods and the adjoining Folly Wood are ancient in origin, many of the trees seen today have been planted. Both woods are dominated by oak and beech, with pockets of birch, ash and sycamore which were planted around 1890. Subsequently areas have been intermittently felled and planted with conifers such as European large, Scots pine and Norway spruce between 1945 – 1984.

The woodland also contains some magnificent older trees of such quality that some were used in the rebuilding of part of the roof of York Minster in 1984 following a catastrophic fire.

https://www.woodlandtrust.org.uk/visiting-woods/wood-information/miltonrigg-woods/history-at-miltonrigg-woods/
Title: Re: Notre-Dame on fire, apparently...
Post by: spesh on 16 April, 2019, 12:21:40 pm
Seems the picture today is not quite as bad as was feared last night.

https://twitter.com/incunabula/status/1118068719593381888
https://twitter.com/incunabula/status/1118090043917328384

Just seen a LONG thread on Twitter about trees in Versailles, planted after the French Revolution to rebuild Notre Dame if needed. They are mature now. Seems moot if they are planes or oak...

This thread? https://twitter.com/_theek_/status/1117895531563372544
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 16 April, 2019, 12:43:04 pm
If it's a wet spring and summer, the rain will continue the damage. It's not as if you can just string a tarp over it.
Title: Re: Notre-Dame on fire, apparently...
Post by: Jaded on 16 April, 2019, 01:05:15 pm
Indeed, and there is the small matter of the seriously damaged scaffolding that will need to be dealt with.
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 16 April, 2019, 01:09:49 pm
And the limestone vaulting which had the fire sitting on it could have been turned into quicklime from the heat.

The building fabric is far from saved.
Title: Re: Notre-Dame on fire, apparently...
Post by: Legs on 16 April, 2019, 01:15:52 pm
Stick a handful of cranked UB914x305x289 over the top with z-purlins and composite cladding and job's a good'un  ;)
Title: Re: Notre-Dame on fire, apparently...
Post by: rafletcher on 16 April, 2019, 01:52:27 pm
Indeed, and there is the small matter of the seriously damaged scaffolding that will need to be dealt with.

Indeed, taking that down's going to be like a giant game of Jenga.
Title: Re: Notre-Dame on fire, apparently...
Post by: mattc on 16 April, 2019, 04:22:46 pm
Indeed, and there is the small matter of the seriously damaged scaffolding that will need to be dealt with.

Indeed, taking that down's going to be like a giant game of Jenga.
Not unlike the fatal incident at Didcot 2 years ago:
https://images.app.goo.gl/UvoEW7ct7hHBrDdq7
Title: Re: Notre-Dame on fire, apparently...
Post by: Cudzoziemiec on 16 April, 2019, 04:34:23 pm
The Al-Aksa mosque in Jerusalem was also on fire last night. The Prayer Room of the Marwani Guards and Solomon's Stables have been destroyed.
Title: Re: Notre-Dame on fire, apparently...
Post by: T42 on 16 April, 2019, 05:08:11 pm
Bound to be oak forests. Europe has a vast quantity of high grade standing oak which would be suitable.

They would have to do some large scale structural repairs if they were going to use oak, as it would be extremely heavy in its green state.

Two hurricanes came through France in 1999 and a lot of timber either fell or had to be felled afterwards. The timber yards are still full of seasoned wood. At least one  timber merchant has said he'll donate as much wood as they want.
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 17 April, 2019, 07:27:26 am
That's good, because Macron wants it all fixed and finished in 5 years.

https://www.theguardian.com/world/2019/apr/17/notre-dame-fire-macron-promises-to-make-cathedral-more-beautiful-than-before

He obviously hasn't met any building conservators, there will be a 5 year argument about the best way to do it and what type of wood to use.
Title: Re: Notre-Dame on fire, apparently...
Post by: Regulator on 17 April, 2019, 02:40:21 pm
My nephew  and his colleagues at Salisbury Cathedral may be some of the experts seconded for the rebuilding.  There's an international shortage of qualified and experienced cathedral stonemasons.
Title: Re: Notre-Dame on fire, apparently...
Post by: Regulator on 17 April, 2019, 02:51:45 pm
Cast Iron was used after a fire at Chartres in the 1830s.

Quote
On June 4, 1836, following the carelessness of plumbers who were making repairs, a fire broke out in the roofing timbers of Chartres cathedral. The fire spread quickly, destroying the wood frame, the forest, and the cathedral's lead roof. Fortunately, the fire did not advance into the bell tower. There, the great bell was not harmed, sounding for half an hour. Many lower bells were lost, to be replaced in 1840 and 1845 by those still rung today.

The roof was replaced by a beautiful iron frame and a copper roof, built in metal for future safety and for economy, like the partial roof at Southwark Cathedral, London built during the restoration of 1822-25, and the cupola at Mayence [Mainz in Germany], built in 1827 (?). When built, the span over the cathedral's crossing (where the nave crosses the transept) was the largest of any iron-framed construction in Europe. The iron frame looks like a huge boat overturned. The framing has joists of wrought and cast iron, connected by rafters that ensure the rigidity of the structure.

https://www.abelard.org/france/using-metal-in-cathedral-construction.php

The fabric of churches built before 1905 is owned by the state in France, and they've been pretty unsentimental about originality in reconstruction in the past. The reference to 'plumbers' refers to working with lead, the roof cladding.

Given that Notre Dame is such a tourist magnet and earner for Paris and France (it gets more than twice as many visitors than the Tower of London, St Paul's and Westminster Abbey combined) and the building is actually owned by the state it's a bit of a cheek that, other than a minimal amount from the Culture Department, the Archdiocese of Paris is expected pay for its upkeep.
Title: Re: Notre-Dame on fire, apparently...
Post by: andrewc on 17 April, 2019, 04:22:26 pm
My nephew  and his colleagues at Salisbury Cathedral may be some of the experts seconded for the rebuilding.  There's an international shortage of qualified and experienced cathedral stonemasons.

I recall you saying that your nephew was training for that job some years ago.  I thought of him when I read this https://www.bbc.co.uk/news/uk-scotland-edinburgh-east-fife-47673596

I hope you've told him to always take precautions ...
Title: Re: Notre-Dame on fire, apparently...
Post by: Regulator on 17 April, 2019, 05:37:35 pm
My nephew  and his colleagues at Salisbury Cathedral may be some of the experts seconded for the rebuilding.  There's an international shortage of qualified and experienced cathedral stonemasons.

I recall you saying that your nephew was training for that job some years ago.  I thought of him when I read this https://www.bbc.co.uk/news/uk-scotland-edinburgh-east-fife-47673596

I hope you've told him to always take precautions ...

They have quite a bit of protective gear these days.  That said, he's still managed to hurt himself...
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 17 April, 2019, 07:47:06 pm

Given that Notre Dame is such a tourist magnet and earner for Paris and France (it gets more than twice as many visitors than the Tower of London, St Paul's and Westminster Abbey combined) and the building is actually owned by the state it's a bit of a cheek that, other than a minimal amount from the Culture Department, the Archdiocese of Paris is expected pay for its upkeep.

The whole 'separation' of church and state thing is a bit of a grey area in France.

Quote
It’s not actually owned by the Archdiocese of Paris

Due to France’s laws regarding secularization, the French government owns all churches built before 1905, including Notre-Dame. The government lets the Archdiocese of Paris use the building for free, and will continue to do so in perpetuity. The Archdiocese of Paris is responsible for the upkeep of the church, as well as for paying employees.

https://catholicherald.co.uk/news/2019/04/16/5-things-to-know-about-the-cathedral-of-notre-dame-in-paris/

Church and State aren't separated in part of France.

Quote
The Concordat in Alsace-Moselle is the part of the Local law in Alsace-Moselle relating to the official status accorded to certain religions in these territories.

This Concordat is a remnant of the Napoleonic Concordat of 1801. The 1801 Concordat was abrogated in the rest of France by the law of 1905 on the separation of church and state. However, at the time, Alsace-Moselle had been annexed by Germany, so the Concordat remained in force in these areas. The Concordat recognises four religious traditions in Alsace-Moselle: three branches of Christianity (Catholic, Lutheran and Reformed) plus the Jewish religion. Therefore, the French concept of laïcité, a rigid separation of church and state, does not apply in this region.

https://en.wikipedia.org/wiki/Concordat_in_Alsace-Moselle

I treasure these little oddities. The image of a monolithic France is contradicted by the realities on the ground.

Edit, a search puts the government contribution to maintenance at €2.3 million per annum.

Quote
Though the French government currently spends two million euros ($2.3 million) a year for maintenance work, the conservation to-do list had grown long.

https://www.thelocal.fr/20190416/notre-dame-the-beloved-heart-of-paris-that-had-been-neglected-too-long
Title: Re: Notre-Dame on fire, apparently...
Post by: pcolbeck on 17 April, 2019, 08:32:29 pm
My nephew  and his colleagues at Salisbury Cathedral may be some of the experts seconded for the rebuilding.  There's an international shortage of qualified and experienced cathedral stonemasons.

My father inlaw is a cathedral stonemason. York Minster, St Georges Chapel Windsor and several others. Ended up in charge of maintenance for Ancient Monuments for the North of England. Maybe they will offer him pots of cash to come out of retirement.
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 17 April, 2019, 08:54:03 pm
I had a look at the section on the roof on Notre Dame website    http://www.notredamedeparis.fr/en/la-cathedrale/architecture/la-charpente/

Then I thought about what I had read about there not being enough oak around to rebuild the roof frame. I think this is just the opinion of a few "experts" on medieval architecture having a mild panic attack.

The pictures below show the quality of oak available at the moment in a single woodland near where I live. The stems are up to 11m long and 400mm - 600mm in diameter at their mid point.

These stems, although impressive, are not the largest in this woodland by a long chalk, there are 36 trees with a diameter of 1m in there. Neither is this woodland unusual for this part of Europe and I can name at least 4 woodlands within 50km of here which have similar standing oak trees.

The ones with a V on don't exist any more, as I have chopped them all up for joinery in my house.  :thumbsup:



(https://i.imgur.com/8BYLPHD.jpg)

(https://i.imgur.com/AW5JkDy.jpg)

(https://i.imgur.com/b28xr5G.jpg)

(https://i.imgur.com/H6W8t1p.jpg)
Title: Re: Notre-Dame on fire, apparently...
Post by: spesh on 17 April, 2019, 09:17:48 pm
There might be enough timber that's the right size, but a key question is how well-seasoned would it need to be before it can be used for rebuilding Notre-Dame - you mentioned weight up-thread, but I'd have thought that shrinkage/warping might also be an issue.
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 17 April, 2019, 09:18:18 pm
Quite a lot of 'shake' in those trees.

Quote
Work on shake by the Forestry Commission has stressed that to avoid it oak should not be grown on dry, stony and gravelly soils, and damage to trees should be avoided in harvesting. These can act as 'triggers' for shake.

http://www.futuretrees.org/our-work/oak/shake-in-oak/
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 17 April, 2019, 09:23:45 pm
The splits just from the ends being in the wind, if you go down to any wood yard you'll see that.

As for building with, this stuff is traditionally built with whilst it's green as seasoning it would take an age and make it difficult to work.
Title: Re: Notre-Dame on fire, apparently...
Post by: spesh on 17 April, 2019, 09:28:18 pm
The splits just from the ends being in the wind, if you go down to any wood yard you'll see that.

As for building with, this stuff is traditionally built with whilst it's green as seasoning it would take an age and make it difficult to work.

OK, fair enough.
Title: Re: Notre-Dame on fire, apparently...
Post by: Regulator on 17 April, 2019, 09:35:59 pm
My nephew  and his colleagues at Salisbury Cathedral may be some of the experts seconded for the rebuilding.  There's an international shortage of qualified and experienced cathedral stonemasons.

My father inlaw is a cathedral stonemason. York Minster, St Georges Chapel Windsor and several others. Ended up in charge of maintenance for Ancient Monuments for the North of England. Maybe they will offer him pots of cash to come out of retirement.

I wouldn’t be surprised...  my nephew has only been qualified for a couple of years and has already had offers from other cathedrals- both in the U.K. and overseas.
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 17 April, 2019, 09:37:32 pm
The splits just from the ends being in the wind, if you go down to any wood yard you'll see that.

As for building with, this stuff is traditionally built with whilst it's green as seasoning it would take an age and make it difficult to work.

OK, fair enough.

Which is why I mentioned the weight, as a new one would be at least twice as heavy as the one which was there on Saturday.
Title: Re: Notre-Dame on fire, apparently...
Post by: Jaded on 17 April, 2019, 10:33:35 pm
My stonemason served 10 years on a cathedral. Wonderful craftsman. Not sure he’ll want to go to France though.
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 17 April, 2019, 11:42:06 pm
The splits just from the ends being in the wind, if you go down to any wood yard you'll see that.



Maybe, maybe not.

Quote
The term 'shake' describes the longitudinal separations in the wood of standing oak (and sweet chestnut) trees that can severely reduce the conversion potential of stems. They occur either radially (star shake), or around the circumference of an annual ring (ring shake). The separations, if not already large, tend to extend during timber processing. Shake has been recognized as a serious problem to users of oak since at least the time of John Evelyn in 1664. It occurs in nearly all British and Irish oak plantations and quite often affects more than 50% of the trees in a stand. The roadside value of shaken timber may be as little as 20% of that of sound timber. It has been estimated that an average of a little over 20% of all oaks in Great Britain may be shaken though there are regional variations. A consequence of this is that the Timber Trade has low expectations of oak, which are reflected in low prices.

It's why merchants are reluctant to buy standing Oak and Sweet Chestnut.
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 18 April, 2019, 06:43:54 am



Maybe, maybe not.

Quote
The term 'shake' describes the longitudinal separations in the wood of standing oak (and sweet chestnut) trees that can severely reduce the conversion potential of stems. They occur either radially (star shake), or around the circumference of an annual ring (ring shake). The separations, if not already large, tend to extend during timber processing. Shake has been recognized as a serious problem to users of oak since at least the time of John Evelyn in 1664. It occurs in nearly all British and Irish oak plantations and quite often affects more than 50% of the trees in a stand. The roadside value of shaken timber may be as little as 20% of that of sound timber. It has been estimated that an average of a little over 20% of all oaks in Great Britain may be shaken though there are regional variations. A consequence of this is that the Timber Trade has low expectations of oak, which are reflected in low prices.

It's why merchants are reluctant to buy standing Oak and Sweet Chestnut.

This is prime wainscot oak from the Baltic and has been prized by joiners for its figure and straight grain throughout history. Which is why this kind of oak oak goes for £190+vat per cubic foot at the merchants and has always been used for the best joinery.

It's not the kind of timber you would stick up in a roof because its clear and the quality is too high. I posted pictures of it to show the size of trees available at the moment and just because you don't like the look of it, doesn't mean its shit.

You cut the oak for the purpose which it is suitable, any fool knows that.

What do you know anyway about using this kind of timber anyway, you only cut hedges.

And by the way, they aren't standing trees because they're laying on the fucking ground. Arse!
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 18 April, 2019, 08:19:57 am
That looks like the sort of acidic heathland soil that can give rise to shake in Oak. If you are looking for beam-quality timber you'll tend to be looking at brown-earth sites where the incidence is lower. You can then buy standing timber with more confidence.

Timber is sold standing by preference.
Quote
We normally recommend standing sale by competitive tender as being the best method of selling timber. This aims to maximise income and minimise risk for the owner. Alternatively timber can be sold by negotiation, private treaty or auction.
http://www.hwforestry.co.uk/timber-sales

Even second quality graded beams specify no shake, for obvious reasons.
Quote
QP1 Grading (Second highest quality)

Sawn timber with practically sharp arrises, permitting wane less than 10% of the face width across no more than 30% of the length.
This width tolerance is increased to 15% for sections above 250 x 250mm.
Sound sapwood permitted on two arrises if the total width is less than 15% of the face width.
Fully or partly intergrown sound knots are permitted if the diameter is less than half the face width.
Boxed heart permitted, as well as traces of heartwood on both faces. Slope of the grain less than 12%, not exceeding 20% locally.
Permitted on a limited number of pieces: brown streak, black holes, brown pith. Excluded: unsound knots, frost crack, ring shake, star shake, curly grain, bark pocket, unsound sapwood, rot, white holes.
https://www.iwood.co.uk/timber-knowledge-library/timber-construction/beam-grading-rules---qpa-and-qp1/

I'm no joiner, although both my father and grandfather were time-served. I'm more interested in forestry. As I mentioned upthread, my partner manages one of the woods which provided oak for the York Minster restoration, so this sort of thing gets discussed at home.

Heather had a visit to Fontainbleau a while ago, where there's a big National Forest, and that's where the timber is likely to come from, and the state will be bearing the risks of sub-grade stems. As mentioned upthread there's still a lot of timber around from 1999.
https://en.wikipedia.org/wiki/Forest_of_Fontainebleau
Title: Re: Notre-Dame on fire, apparently...
Post by: pcolbeck on 18 April, 2019, 08:52:54 am
One of the other French cathedrals rebuilt their roof after a fire using reinforced concrete beams moulded to look exactly like wooden ones down to moulding the wood joints. This was specifically to reduce the fire risk. I wonder if they will do the same thing with Notre-Dame? The Sagrada Família in Barcelona uses moulded concrete for its mad vaulted roof as well.
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 18 April, 2019, 09:06:02 am
One of the other French cathedrals rebuilt their roof after a fire using reinforced concrete beams moulded to look exactly like wooden ones down to moulding the wood joints. This was specifically to reduce the fire risk. I wonder if they will do the same thing with Notre-Dame? The Sagrada Família in Barcelona uses moulded concrete for its mad vaulted roof as well.

Reims, I mentioned that on page 1, when Notre Dame was still on fire.

(https://francetravelplanner.com/assets/champagne/reims_cathedral_roof4042.jpg)
Title: Re: Notre-Dame on fire, apparently...
Post by: pcolbeck on 18 April, 2019, 09:09:56 am
Yes thats the one I was thinking about. I visited it last year.
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 18 April, 2019, 10:00:02 am
Notre Dame de Reims is arguably more important to France than the one in Paris, as it's where French Kings were crowned.
Quote
On December 16, 1431, Henry VI of England was crowned as "King of France" in the Notre Dame de Paris, according to a ritual similar to that established by his great-grandfather Charles V of France. This was an attempt to counter the coronation of Henry's uncle and rival, Charles VII of France, who had been crowned at Reims in 1429.

https://en.wikipedia.org/wiki/Reims_Cathedral

I'll be interested to follow the debates on 'authenticity' in the restoration. Modern fashion dictates a more traditional approach.
Title: Re: Notre-Dame on fire, apparently...
Post by: T42 on 18 April, 2019, 10:17:29 am
France Info were just talking to an architect who would like to see titanium used for the spire framing, and maybe for the cover as well. Some other fellow was all for glass: tits on a bull IMO.
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 18 April, 2019, 10:46:54 am
A lot of the features of Notre Dame were re-imagined in the mid 19th Century.

Quote
In 1844 King Louis Philippe ordered that the church be restored. The commission for the restoration was won by two architects, Jean-Baptiste-Antoine Lassus and Eugène Viollet-le-Duc, who was then just 31 years old. They supervised a large team of sculptors, glass makers and other craftsmen who remade, working from drawings or engravings, the original decoration, or, if they did not have a model, adding new elements they felt were in the spirit of the original style. They made a taller and more ornate reconstruction of the original spire (including a statue of Saint Thomas that resembles Viollet-le-Duc), as well as adding the sculpture of mythical creatures on the Galerie des Chimères. The restoration took twenty five years.[24]
https://en.wikipedia.org/wiki/Notre-Dame_de_Paris

Title: Re: Notre-Dame on fire, apparently...
Post by: T42 on 18 April, 2019, 11:22:41 am
I never much liked the spire anyway, but in restoring it they shouldn't break with the current style. Years ago the 13th-century Linlithgow church was vandalized in that manner:

(https://upload.wikimedia.org/wikipedia/commons/6/64/Am_linlithgow_palace_church_and_town.JPG)

That metal doo-dah was originally bright gold.
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 19 April, 2019, 06:42:41 pm
@ESL

FYI, the splits go 8" in from the butt end. This is not a defect, as any sawmill will saw the flared butt section off anyway.

One of your supposed defective stems, which according to your link are worth less than the cost of firewood.

(https://i.imgur.com/caWUTrZ.jpg)

8 months of sitting in the sun later and nothing. If it was a problem the splits would have propagated along the stem by now and split this 2' section in half.

(https://i.imgur.com/8JpueOj.jpg)

As for buying timber.

The people who buy standing timber are coppice workers, who buy a set area of woodland timber for making coppice products.

Structural and joinery grade timber is sold forwarded out of the woodland and laying on the ground at the road. It is normally purchased by an agent and sold straight away to a mill as ordered or via auction. A timber merchant buys milled and dried timber through an agent at a wharf or travelling on a boat.

Carpenters send a cutting list to a mill and get what they are given according to the visual strength grade given after it is milled or if you have access to a qualified person, graded at the road head, but this is rarer than a rare thing as you need to allow for defects, sloping grain and knot type, position and the knot area ratio contained in the finished structural section and you can't do that unless you have X-ray eyes. So it's a guess as good as a guess could be.

Very rarely will a carpenter choose standing timber or buy stems at the road head and only if they are after a very specific type, size or shape or mill their own timber, which is what I have been doing for 15 years.

Such is the nature of the timber industry, which I have been involved in for over 35 years.

I guess we could all just google stuff to make ourselves look clever, instead of relying on first hand knowledge or proper qualifications. I'll let you have the last word on this..

Edit

Oh, I'll add. The soil those stems are laying on is the bank of the fjord, which is peat. They weren't grown there, but were grown at a much higher elevation within the woodland. They were put there by a 6 wheel drive forwarder after being harvested. It's the only spot where there is enough room to lay them out and has road access for the timber truck to crane them on and take them away.

(click to show/hide)
Title: Re: Notre-Dame on fire, apparently...
Post by: Man in a tree on 19 April, 2019, 08:51:22 pm
Re the earlier mention of "shaken" timber, I hadn't come across this before. Is it the origin of the expression used to describe being taken aback* by an experience, as in "I was shaken to discover ...".

*As in sailing ship being stopped in its tracks. I say, isn't language marvellous?
Title: Re: Notre-Dame on fire, apparently...
Post by: Basil on 20 April, 2019, 01:40:13 am
The bees survived!

Title: Re: Notre-Dame on fire, apparently...
Post by: mark on 20 April, 2019, 02:49:58 am
There seems to have been a fair bit of human error and fallibility (to put it mildly) in the fire safety plans for the cathedral.

https://www.nytimes.com/2019/04/19/world/europe/notre-dame-fire-safety.html?emc=edit_ne_20190419&nl=evening-briefing&nlid=1555877320190419&te=1
Title: Re: Notre-Dame on fire, apparently...
Post by: Aunt Maud on 20 April, 2019, 07:11:08 am
The Norwegians developed a sprinkler system for their stave churches which makes fine rain and covers the entire structure. They have also installed permanent fire hoses on site for anyone to begin fighting a fire at any time.

(https://i.imgur.com/WPQWAzF.png)


Relying solely on the char factor probably wasn't such a good idea in the end, but it has been standard practice to do so in historic timber building conservation for a long time.
Title: Re: Notre-Dame on fire, apparently...
Post by: T42 on 20 April, 2019, 07:38:19 am
There seems to have been a fair bit of human error and fallibility (to put it mildly) in the fire safety plans for the cathedral.

https://www.nytimes.com/2019/04/19/world/europe/notre-dame-fire-safety.html?emc=edit_ne_20190419&nl=evening-briefing&nlid=1555877320190419&te=1

Seems to be a common failing. Applies to quite a few ancient buildings and some not so ancient. It's like everything else: doing nothing saves money, until it doesn't.
Title: Re: Notre-Dame on fire, apparently...
Post by: andrewc on 20 April, 2019, 01:02:21 pm
https://www.theguardian.com/world/2019/apr/20/notre-dame-1bn-fund-pits-paris-against-provinces-gilets-jaunes-macron


I've read that the huge donations made by a few billionaires are eligible for 60% tax relief. 


(https://pbs.twimg.com/media/D4YVUr4WkAA6qYJ.jpg)


Rebuilding Notre Dame or looking after the poor.  France is rich enough to do both, but that doesn't seem to be the plan.
Title: Re: Notre-Dame on fire, apparently...
Post by: T42 on 20 April, 2019, 01:44:34 pm
I've read that the huge donations made by a few billionaires are eligible for 60% tax relief. 

All donations are eligible for 60% tax relief.  What you maybe haven't read is that several of them aren't going to claim it.  Our donation wasn't that large but neither am I.

Re the dogs in the manger complaining about how people would fork out for this but not for the poor, they possibly don't appreciate how Notre Dame affected people.   Unfortunately, the poor form an abstract mass, and N.D. is a concrete part of the psyche of everyone French, religious or not. My daughter remarked that she was almost in tears watching it, as were we. For us it was almost as stunning as watching 9/11.
Title: Re: Notre-Dame on fire, apparently...
Post by: andrewc on 20 April, 2019, 01:57:21 pm
I'd seen that one plutocrat wasn't going to claim it. Didn't know about others.   Some payments I make can have the tax recovered by the receiving organisation (Gift Aid) but only at my standard tax rate.


I was fairly saddened myself as I've visited the place whenever I'm in Paris. 
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 22 April, 2019, 09:11:41 pm
@ Aunt Maud. I thought we were talking about oak beams for the roof restoration of Notre Dame, not cleaving oak into short lengths for joinery. I'd be suspicious of the stem on the left, less so about the 'V' marked one you bought, and happiest about the one on the right. That's for beams of course.

(https://i.imgur.com/AW5JkDy.jpg)
Title: Re: Notre-Dame on fire, apparently...
Post by: The French Tandem on 23 April, 2019, 09:13:36 pm
@ESL: In the long run, the three stems are probably of equivalent structural value. The one on the left simply had the opportunity to dry  a little bit more than the two others. The problem is that wood has orthotropic properties, which means in this case, that whenever shrinkage is, say, 1% in a radial direction, it will be 2% in a circumferential direction. The difference in shrinkage rates is such that a complete stem will always crack while drying, no matter what you do with it. The only way to prevent cracking is to saw a beam from a green log large enough so that the center point of the growth rings is out of your beam. Admittedly, this is not always possible if you need a very large beam

I hope I was clear enough but I'm not sure!

A
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 23 April, 2019, 10:35:59 pm
The beams of Notre Dame cathedral would have had a lot of 'redundancy', so ultimately defects in the timber aren't that important. There's been a lot of work done on the reasons behind 'shakes', as Oak and Chestnut have the potential to replace high quality tropical hardwoods if the quality can be improved. Domestic timber is often used in situations where stress grading isn't important.

Defects are more of a problem when producing boards. I once had to price up building a 650 metre boardwalk across a wetland nature reserve. We couldn't use chemically-preserved timber, so the choice was between Larch and Oak, which are both durable without treatment. The Oak was twice the price, and would have needed drilling and screwing to avoid splitting. That's assuming the boards were sound in the first instance. The quote worked out at £40,000 for Larch and £75,000 for Oak. The customer went for Larch.

I went direct to the sawmill for that amount of timber, and it was interesting to discuss the difference between softwood and hardwood milling. I made a short film at the time of the mill, it's since been upgraded. Buying direct meant I could up the board length and thickness. https://www.youtube.com/watch?v=il_0hkPHTtc

The site for the boardwalk was interesting, a typical lowland peat moss that had succeeded to woodland, mainly Birch, with a secondary succession of Oak. Cheshire Wildlife Trust have since cleared the trees. The construction was a bit of challenge due to poor access.
 https://www.youtube.com/watch?v=lXgT7I2pv_4
Title: Re: Notre-Dame on fire, apparently...
Post by: Exit Stage Left on 24 April, 2019, 02:42:26 pm
I was curious to know what's become of the boardwalk we built in 2008, and how much of the woodland it ran through has been cleared. I'm used to checking up on woods I've planted on Google maps, and it's gratifying to be able to see an example of our carpentry on there. It looks like the higher parts of the site have been left wooded.
https://www.google.co.uk/maps/place/Danes+Moss/@53.2302044,-2.1427295,359m/data=!3m1!1e3!4m5!3m4!1s0x487a4f2ace0bbd6b:0x185077883d8600f1!8m2!3d53.2392214!4d-2.1439765?hl=en&authuser=0

We deliberately exceeded the specification, as the sawmill wanted to produce material to a bigger dimension. It would have cost more to have it sawn smaller.

The interesting part of the Notre Dame restoration will be in specifying the replacement roof beams. The whole structure would be stronger and lighter if it was engineered to modern standards. But there will be a strong pressure to reproduce the original structure.
Title: Re: Notre-Dame on fire, apparently...
Post by: andrewc on 15 April, 2020, 04:48:35 pm
https://twitter.com/AgnesCPoirier/status/1250341320305995777?s=20


Hey! #NotreDame’s 356 year old bourdon Emmanuel will toll tonight at 8pm for the first time in a year to join France celebrating doctors and nurses fighting coronavirus !


The Dastardly FORRINS can even fix their bells faster than we can.    :D   BigBenNotBonging.
Title: Re: Notre-Dame on fire, apparently...
Post by: andrewc on 11 July, 2023, 10:01:32 pm
https://twitter.com/AgnesCPoirier/status/1678795808425013248   New roof trusses being delivered by barge. 


(https://pbs.twimg.com/media/F0xHfueWwAMDTex?format=jpg&name=small)


(https://pbs.twimg.com/media/F0xHfupXgAAZ3xe?format=jpg&name=small)
Title: Re: Notre-Dame on fire, apparently...
Post by: Jaded on 11 July, 2023, 10:17:42 pm
 :thumbsup:

I hope they have planted another oak forest….
Title: Re: Notre-Dame on fire, apparently...
Post by: Asterix, the former Gaul. on 12 July, 2023, 10:43:31 am
:thumbsup:

I hope they have planted another oak forest….

In my garden in the Limousin the oaks grew like weeds. It was astonishing how fast they could put down a deep root making them hard to pull up and very drought resistant; the rate of growth above ground surprised me too.  In 2005 I left an oak to grow which was so slender I could easily use one hand to shake from the topmost branches the June bugs that ate its leaves.  By 2019 when I left, it was a real tree giving a large spread of shade beneath its branches.  I couldn't encircle the trunk using both hands, never mind shake it. 

Oaks are propagated by Jays (https://www.theguardian.com/environment/2021/jun/16/half-the-trees-in-two-new-english-woodlands-planted-by-jays-study-finds) and there were plenty of them around to do the job.  If I had left my garden alone, in 20 years there would have been a forest of oaks.
Title: Re: Notre-Dame on fire, apparently...
Post by: davelodwig on 17 July, 2023, 11:33:03 am
https://twitter.com/AgnesCPoirier/status/1678795808425013248   New roof trusses being delivered by barge. 


(https://pbs.twimg.com/media/F0xHfueWwAMDTex?format=jpg&name=small)


(https://pbs.twimg.com/media/F0xHfupXgAAZ3xe?format=jpg&name=small)

We were there in June and my boy who has a thing for cranes was in his element.  If we'd been there when they lifted the roof sections in he'd have probably burst with excitement.