News London Tower Block Fire: Latest News Updates

[Nidum]

http://www.bbc.co.uk/news/uk-england-london-40272168

 

[jedishrfu]

It always seems we are ill prepared for high rise fires.

The fire truck ladders can only reach so high and the internal sprinklers can only reach certain areas.

Much of our standards depend on people saving themselves through evacuation:

http://www.nfpa.org/public-education/by-topic/property-type-and-vehicles/high-rise-buildings

 

[Borek]

Geoff Wilkinson, a fire and building inspector, told the BBC that the Grenfell Tower block "didn't perform in the way you'd expect a building to perform" once it caught fire as "you'd expect it to be contained to an individual apartment".

"Something has gone dramatically wrong here," he said.

Exactly my thoughts.

 

[russ_watters]

I don't get it. From what I have heard, there were no active sprinklers or alarms, though I'm not sure if that means they didn't exist or weren't working. I'm not sure the age of the building, but anything less than 20 years old should be sprinklered.

This shouldn't happen in a developed country.

 

[Bandersnatch]

I don't get it. From what I have heard, there were no active sprinklers or alarms, though I'm not sure if that means they didn't exist or weren't working. I'm not sure the age of the building, but anything less than 20 years old should be sprinklered.

This shouldn't happen in a developed country.

Early edits on Wikipedia can sometimes be unreliable, but there's a lot of talk there about long-standing issues with fire safety violations by the building administration.

 

[russ_watters]

It always seems we are ill prepared for high rise fires.

The fire truck ladders can only reach so high and the internal sprinklers can only reach certain areas.

Much of our standards depend on people saving themselves through evacuation:

http://www.nfpa.org/public-education/by-topic/property-type-and-vehicles/high-rise-buildings

My understanding of the code is that all high-rise buildings in the USA are required to have sprinklers, by retrofit if necessary if they are older than about 30 years due to some high profile fatal fires in the 1980s.
http://www.floridafiresprinkler.com/files/4714/7122/2210/Hi_Rise_Retrofit_-_FAQ_Final.pdf

The One Meridian fire in Philly in 1991 showed the spectacular ability of a small number of heads to stop a fire:
https://en.wikipedia.org/wiki/One_Meridian_Plaza

The building had been built in 1972 and was partially retrofitted by the time of the fire.

 

[Vanadium 50]

There is speculation that the building's cladding ignited and contributed to the fire's spread.

 

[berkeman]

There is speculation that the building's cladding ignited and contributed to the fire's spread.

Yeah, I haven't found any mention of sprinklers yet (strangely), but there is this about the cladding from CNN:

http://www.cnn.com/2017/06/13/europe/west-london-fire/index.html

But this fire seemed to tear up the building from the outside, gutting the outer apartments and blackening most of the facade.

 

[Astronuc]

The Atlantic magazine did a story on the Grenfell Tower and conditions that contributed to the fire.

The Grenfell Tower Fire and London's Public-Housing Crisis, Toby Melville / Reuters
https://www.theatlantic.com/interna...6/london-fire-grenfell-public-housing/530298/

The landlord is the Kensington and Chelsea Tenants Management Organisation (KCTMO), a for-profit company in charge of refurbishment and maintenance of the building. The building is owned by the local borough of Kensington and Chelsea—London’s wealthiest borough. In a trend now typical across London, the borough contracted KCTMO to refurbish the tower, in part to increase the number of apartments available for private rent or sale. That work left the tower with just one staircase and exit—an exit that the management company has failed to keep clear. Protests about the safety of the people living in the tower fell on deaf ears.

One resident has apparently claimed his refrigerator exploded leading to the fire.
https://www.yahoo.com/news/devastat...s-fire-caused-fridge-exploding-145403064.html

Grenfell Tower was built in 1974 and contains 120 flats thought to be home to between 400 and 600 people.

The building was refurbished recently at a cost of £8.6 million, with work completed in May last year.

Rydon, the firm that carried it out, said its work “met all required building control, fire regulation, and health and safety standards”.

Well clearly, the required building control, fire regulation, and health and safety standards are inadequate, or the work was somehow deficient.

 

[Evo]

I don't get it. From what I have heard, there were no active sprinklers or alarms, though I'm not sure if that means they didn't exist or weren't working. I'm not sure the age of the building, but anything less than 20 years old should be sprinklered.

This shouldn't happen in a developed country.

From the reports I read they weren't installed because of cost! Those people need to be tried for manslaughter!

Speaking to LBC Radio, UK opposition leader Jeremy Corbyn has said "searching questions" need to be asked about the fire at Grenfell Tower and suggested that recent spending cuts might have contributed to the severity of the incident, according to Press Association.

"If you deny local authorities the funding they need, then there is a price that's paid," he said.

He also told the radio station that calls for sprinklers to be installed in high-rise buildings after a fatal fire at a tower block in south London in 2009 had not been heeded.

Corbyn added: "At this stage, let's save life, let's bring safety to people at Grenfell Tower.

"I think tomorrow is a day for searching questions," he said. And these questions "may well be difficult" for the Government.

http://www.stuff.co.nz/world/93685630/live-london-highrise-grenfall-tower-on-fire

 

[mheslep]

My understanding of the code is that all high-rise buildings in the USA are required to have sprinklers, ...

Its not so much height as fire area sq ft now. Most any commercial building over 1000 sq ft, especially retail businesses, have a sprinkler http://legacycodes.iccsafe.org/app/book/content/VA/2012_VA_Fire_HTML/Chapter%209.htmlin my area, regardless of height. Any building over 5K sq ft regardless of use with an occupant load over 100 requires sprinklers.

 

[f95toli]

From the reports I read they weren't installed because of cost! Those people need to be tried for manslaughter!

There are no regulations in the UK that say that you need to have a sprinkler system installed so I don't see how there could be a legal case; the regulations that require a sprinkler system in tall building were only introduced in 2007 and were not retroactive, meaning many (I suspect most) tall buildings older than that won't have a sprinkler system installed.
There are LOTS of old buildings in the UK and retrofitting sprinkler systems is often extremely difficult our even impossible (as opposed to just costly) so it is not surprising that the law was not retroactive.

There is an ongoing criminal investigation but so far no one has -as far as I am aware- been able to pinpoint an actual violation of building regulations.

 

[Evo]

There are no regulations in the UK that say that you need to have a sprinkler system installed so I don't see how there could be a legal case; the regulations that require a sprinkler system in tall building were only introduced in 2007 and were not retroactive, meaning many (I suspect most) tall buildings older than that won't have a sprinkler system installed.
There are LOTS of old buildings in the UK and retrofitting sprinkler systems is often extremely difficult our even impossible (as opposed to just costly) so it is not surprising that the law was not retroactive.

There is an ongoing criminal investigation but so far no one has -as far as I am aware- been able to pinpoint an actual violation of building regulations.

That's terrible. Thank you for the information. People shouldn't be allowed to live in those death traps, IMO.

 

[russ_watters]

One resident has apparently claimed his refrigerator exploded leading to the fire.
https://www.yahoo.com/news/devastat...s-fire-caused-fridge-exploding-145403064.html

It has been confirmed:
http://money.cnn.com/2017/06/23/news/whirlpool-london-fire-grenfell-tower/index.html

A potential contributing factor here is that due to anti-global warming and ozone depletion regulations, refrigerants are being/have been switched from compounds that aren't flammable to compounds that are highly flammable (such as propane).
http://www.ukfiretraining.com/news/fridge-freezer-fires.html

 

[Astronuc]

Those people need to be tried for manslaughter!

Apparently, the police are consider manslaughter charges in the Grenfell Tower fire.

https://www.theguardian.com/uk-news...-fire-police-considering-manslaughter-charges

https://www.ft.com/content/d2a6ae8c-5805-11e7-9fed-c19e2700005f

 

[DrGreg]

"Cladding on 34 tower blocks in 17 council areas in England has failed fire safety tests, the government says."

http://www.bbc.co.uk/news/uk-40391395

 

[phinds]

"Cladding on 34 tower blocks in 17 council areas in England has failed fire safety tests, the government says."

That is VERY misleadingly stated. Suppose it was 34 failed out of 7,000 tested? You see how your statement doesn't do justice to the facts? In actuality it was 34 failed out of 34 tested.

 

[jim hardy]

everybody has jumped on the paneling

seems to me we should question the foam behind it

from the NYT article(crude annotations mine)
https://www.nytimes.com/2017/06/24/world/europe/grenfell-tower-london-fire.html

If you build a chamber with one side heatproof, ie ceramic like a concrete wall
and the other side a heat reflector like the aluminum panel
then stuff it with fuel like that insulating foam against the concrete wall
and provide for forced draft of air, in this case convection over a lot of vertical height

you have built yourself a blast furnace or maybe a gigantic blowtorch.

If that foam adjacent the concrete wall is flammable,
i suspect those panels would have melted even if they were solid steel.
That they fell, probably aflame from their polyurethane sandwich, does not surprise me. Probably their support brackets failed from the heat.
But i bet it was spectacular . Are there reports of a tornado like roar?If anybody hears what was that foam , post a link to it?
Here's one to the panels. They meet ASTM E84.

https://www.arconic.com/aap/north_america/catalog/pdf/brochures/Reynobond_Brochure.pdf

How about the foam behind them ? Looks to me like that was the culprit.

It's a personal theory , just putting it out for consideration. We must await details.
If mentors want to delete as 'personal theory against guidelines' there's no hard feelings.

old jim

 

[Nidum]

@jim hardy : Celotex RS5000

 

[jim hardy]

@jim hardy : Celotex RS5000

https://www.celotex.co.uk/products/rs5000

Suitable for use in warm steel frame constructions for ventilated facade applications, Celotex RS5000 can be used in buildings above 18 metres in height – a first for PIR insulation.

With low emissivity textured aluminium foil facings, Celotex RS5000 comprises rigid polyisocyanurate foam core (PIR) using a blowing agent that has low global warming potential (GWP) and zero ozone depletion potential (ODP).

What's Polyisocyuranate?
http://www.polyiso.org/?page=FirePerformance

Looks like both components, insulation and panels, meet the ASTM E84 standard tests. Polysilo says it's 'resistant' up to 390F.

This is how codes and standards evolve as industry learns from its mistakes.
This one will teach standards organizations to test for "Chimney Effect" .

Thanks Nidum !

old jim

 

[OmCheeto]

...
How about the foam behind them ? Looks to me like that was the culprit.

It's a personal theory , just putting it out for consideration. We must await details.
If mentors want to delete as 'personal theory against guidelines' there's no hard feelings.

old jim

Whoever wrote the wiki entry on "fire risks" of "polyisocyanurate." seems to concur with your personal theory.

https://en.wikipedia.org/wiki/Polyisocyanurate#Fire_risk

On 14 June 2017 the block of flats, within 15 minutes, was enveloped in flames from the fourth floor to the top 24th floor. The causes of the rapid spread of fire up the outside of the building have yet to be established. It should be noted that flames can occupy the cavity between the insulation material and the cladding, and be drawn upwards by convection, elongating to create secondary fires, and do so "regardless of the materials used to line the cavities".​

As do I.

The wiki article references the following as a source for the bolded section:

Probyn Miers (January 2016). "Fire Risks From External Cladding Panels – A Perspective From The UK". section 3.3.2.​

Probyn Miers seems to be a legitimate firm.

 

[jim hardy]

this is only a newspaper account

http://www.telegraph.co.uk/news/201...ting-tower-blocks-deadly-insulation-grenfell/

The Metropolitan Police has confirmed that while both the cladding and the insulation on Grenfell failed safety tests, it was "the insulation that burnt so quickly". This is not being tested by the Government.

Matthew Needham-Laing, an architect who is head of construction at Katten Law UK, said: "I think that they have got to look at the whole construction of the cladding zone.

"If the insulation catches light the rain screen could be completely incombustible but you still would have the same problem with the fire catching the outside of the building."

He said that "almost 100 per cent" of the 600 tower blocks with cladding panels will have been fitted with some form of insulation.

There are two types of insulation, the most common is PIR blocks which are fire resistant but still combustible, like the Celotex blocks used on Grenfell Tower.

The second type of insulation is a mineral wool, which is non-combustible but less common in the industry as it is difficult to install, experts say. Camden, Hounslow and a number of other blocks found to have cladding issues confirmed they had mineral wool insulation.

Why did they add insulation to the outside of the buildings? Some building efficiency mandate?

 

[Borek]

Why did they add insulation to the outside of the buildings? Some building efficiency mandate?

That would be my guess, standards are getting more demanding and the only way for the old buildings to meet them is to add additional layer of insulation.

 

[f95toli]

this is only a newspaper account

http://www.telegraph.co.uk/news/201...ting-tower-blocks-deadly-insulation-grenfell/
Why did they add insulation to the outside of the buildings? Some building efficiency mandate?

Many of these old buildings (note -however- that they are not ACTUALLY old, at least not compared to the Georgian and Victorian houses around them) have little or no insulation. This was not so much of an issue when they were built since energy prices (north sea gas and oil) were lower, CO2 emissions were not an issue and people just accepted that houses were cold, damp and draughty (houses in England -irrespective of age- are generally badly built in terms of the inside environment compared to the rest of Europe).
Due to the way the houses are built insulating on the outside can be a good option; it is not necessarily cheaper but it does not use up space inside the flats (which are already quite small).

(I used to live in a council owned flat not far from where the fire was, in a house of a similar age)

 

[256bits]

it is not necessarily cheaper but it does not use up space inside the flats (which are already quite small).

Apparently there are more expensive units across the way.
Would there be any information available as to the age of these units ( buildings ), how they are insulated, if extra cladding was added on after the building was put up, and if so, what type.
Not necessarily as a comparison between rich/poor, but even at other areas of comparable financial strength, perhaps looking at the range of value the different landlords/agency placed upon their holdings, and what could be achievable based on cost of upgrades, and return on expenditure.
It just seems odd that the whole building, and I would imagine several others were, was clad from bottom to top with the product in question, even though the manufacturer/supplier recommends only as far up as a fireman's ladder would reach.
Probably the information would not be easily accessible - there may be no comprehensive data at all yet.

 

[Mikezilla]

I think Jim makes a good point.

Insulation is key to energy efficiency. My (residential and small commercial) experience in USA has been that if you're missing insulation between wood or metal studs, you've got to fill it. infrared cameras determine where it's missing. You make a hole(s) in exterior-facing walls, and blow insulation into plug the gap. Of course that requires some patching for ascetics, unless you don't mind a 3-inch piece of foam attached to the outside of your building.

For older blocks like Grenfell, there probably was missing insulation in wall cavities up and down that building. May not be the builder's fault. Given bad management (KCTMO), the more repairs and refurbs done, the less insulation remaining due to poor work.

My point is that the authorities probably bypassed the IR cams and filling, and opted for the exterior insulation plus cladding instead. It makes the building look nicer, avoids costly patching of holes, and the work doesn't intrude on residents. This is likely why many blocks have this stuff affixed throughout UK, and why it's hyped up. I doubt if the Celotex and cladding achieved the comparable R-value of just filling in the gaps (I think they call it U-value in UK), but I suppose it could if the Celotex was thick enough and covered those pesky corners where insulation is frequently missing.

It sure as hell wasn't worth the combustibility, though. You want this sort of stuff contained in walls where holes, voids and any other access to oxygen get blocked off by fire caulking. When insulation catches fire, it's extreme heat and toxic fumes. A fireman's nightmare, and they always talked about this when they came in for inspection on jobs I worked.

The only reason we're paying attention to this now is because many lives were lost at Grenfell. There's been several high-rise fires with a similar set-up around the world, but nobody died because these were newer buildings with other redundant fire safety measures in place, like sprinklers for example.

My 2 cents for now, worth price paid

 

[Mikezilla]

http://www.heraldscotland.com/opini...s_are_emerging_about_Grenfell_Tower_cladding/

The BRE certification is used as the justification for using this material in facades greater than 18m in height. Reference is made to the BR135 performance specification.

However, this applies solely to a unique construction based on two 12.5mm skins of plasterboard on a lightweight steel frame, with another 12.5mm of incombustible board, then the Celotex RS5000, and finally a further 12.5mm fibre cement facade panel.

In other word, the insulation has to be totally encapsulated in fireproof material.

Only if that construction is followed is the certification valid.

The manufacturer even warns architects about this by stating that “The fire performance and classification report issued only relates to the components detailed and constructed in Fig 4.

“Any changes to the components listed and construction method set out in figure 4 will need to be considered by the building designer”. That is another way of saying that if you depart from this specification – as the Grenfell Tower facade designer did – then the fire performance is invalid above 18m.

That leaves only the CE certificate. Celotex state that “CE marking confirms that our products fully comply with BS EN 13165 and that key performance characteristics have been verified through independent type testing”.

One would therefore assume that, since this is a product advertised for use in a fire-rated construction, the fire aspects will have been tested.

However, when you drill down into the certificate only the thermal performance and compressive strength have been verified.

The remaining 10 categories simply state “No Performance Determined”. This includes:

*Reaction to fire

*Release of Dangerous Substances

*Durability of reaction to fire against heat

* Durability of thermal resistance against heat.

Nowhere does it tell you that polyisocyanurate releases a lethal gas in a severe fire condition. Put simply, this certificate leaves so much risk with the designer that I would have no choice but to refuse to use the product.​

 

[jim hardy]

There's some detective work, mikezilla ..

Torts are going to fly.

 

[Mikezilla]

Well you called it right, Jim, so you deserve most credit...

Architect spec'd insulation, probably to meet some UK environmental agengy edict.

Not sure there's much money to be had with a design firm, but if there was an actual manslaughter charge brought, it would probably fall on them. Can't see that happening given government had a role to play in this tragedy as well, but I'm not a lawyer.

I'm sure we'll be hearing about this firm soon, though.

 

[256bits]

Didn't anybody there remember the movie Towering Inferno?

 

[Mikezilla]

Just a bit more news. The architect is Studio E, and hasn't commented yet.

http://www.architecturalrecord.com/articles/12837-grenfell-tower-fire-tragedy-sparks-safety-row

The Grenfell inferno has increased doubts about U.K. building regulations on ACM cladding. Around 600 U.K. high-rises are estimated to have been retrofitted with ACM to improve their appearance and energy efficiency. Cladding samples are being rushed for combustibility tests, conducted by the building research organization BRE Group, Watford.

At press time, all 95 samples from 32 regions failed BRE’s tests, according to the Dept. for Communities and Local Government. A spokesman says that high failure rate is because the riskiest buildings were tested first.

For conventional designs, U.K. building regulations set out minimum performance requirements. Details of how to comply are published in the so-called Approved Documents, which reference British standards and other technical guidance. In England, “any insulation product” on buildings taller than 18 m must be of “limited combustibility,” a term the documents define. But the wording is ambiguous, according to Metcalf. Official guidance “doesn’t explicitly say that the cladding should be of limited combustibility,” explains Metcalf. “Most people have interpreted it to mean it doesn’t need to be.”

 

[Borg]

Didn't anybody there remember the movie Towering Inferno?

The building in that movie didn't burn as fast as this one.

 

[DrGreg]

The following article gives some insight: Why do England's high-rises keep failing fire tests?

"The short answer is: the organisations responsible for maintaining standards in the building industry have been advising contractors not to take the regulations too literally."​

The article expands this short answer in some detail.

 

[Mikezilla]

From the above BBC article:

Newsnight reported, however, on a troubling fourth route. The National House Building Council (NHBC) is a big player in building inspection. Last year, they issued guidance which states that you can use a variety of sub-A2 insulation boards with B-grade external cladding - and you can do all of that without even a desktop study.

That effectively means that a sector body involved in signing off buildings unilaterally decided that largely using B-grade material is now sufficient, not A2. NHBC themselves state that "this is on the basis of NHBC having reviewed a significant quantity of data from a range of tests and desktop assessments."​

I doubt they reviewed or assessed much of anything given recent high-rise fires throughout the world with similar cladding. If you're in the industry you should be looking at this sort of stuff, not to mention asking why others in EU, US and elsewhere have stricter standards on these materials.

Gross negligence at best.

 

[Nidum]

http://www.dailymail.co.uk/news/article-4653390/Grenfell-Tower-cladding-downgraded-save-300-000.html

 

[BL4CKB0X97]

I don't get it. From what I have heard, there were no active sprinklers or alarms, though I'm not sure if that means they didn't exist or weren't working. I'm not sure the age of the building, but anything less than 20 years old should be sprinklered.

This shouldn't happen in a developed country.

The curse of politicians greed and their inability to see to the obvious.

Money.Money.Money.

 

[BL4CKB0X97]

The material used is banned in the uk. I think its 60 high rise flats that are unsafe. One got evacuated in the middle of the night.

 

[thomas9059]

How terrible! Hope everyone is safe :(

 

[f95toli]

The curse of politicians greed and their inability to see to the obvious.

Money.Money.Money.

It is more complicated than that. This tower -like most towers of this type- was built in the last 60s/early 70s . The idea was to build good, affordable housing for "ordinary people" but a lot of corners were cut (I've lived on an counsel estate not far from Grenfell tower which was built around the same time) .

Part of the problem that many of these towers are today located in VERY expensive areas (back in the 70s most of the people living around there were immigrants from the west Indies; i.e. it was a poor area) ; the Grenfell tower is in the borough of Kensington and Chelsea where some of the most expensive houses/flats in the WORLD are located and no "normal" person can afford to buy or rent an house of flat there (a "cheap" house in the area will cost >£700K and if you are renting you are looking at maybe £2000 a month for a two bedroom flat).

Now, the counsel still owns many (but not all) of the flats in these towers and the rent is controlled (very cheap by London standards), meaning it is usually the only place where these people can afford to live. This means that if/when these towers are demolished there is simply nowhere for the people to go, towers got a bad reputation in the UK so counsels haven't built many new ones in the past 30 years or so and you would need a large amount of space if you were to two or three story houses with 120 flats. That amount of space would cost an enormous amount of money to buy(not that it is available)

All of this means that whereas many of these towers should probably be demolished we will be stuck with them for a long time; which is why they are being renovated.

 

[jim hardy]

http://www.dailymail.co.uk/news/article-4653390/Grenfell-Tower-cladding-downgraded-save-300-000.html

They're still focused on the cladding not the foam fuel behind it.

 

[BL4CKB0X97]

It is more complicated than that. This tower -like most towers of this type- was built in the last 60s/early 70s . The idea was to build good, affordable housing for "ordinary people" but a lot of corners were cut (I've lived on an counsel estate not far from Grenfell tower which was built around the same time) .

Part of the problem that many of these towers are today located in VERY expensive areas (back in the 70s most of the people living around there were immigrants from the west Indies; i.e. it was a poor area) ; the Grenfell tower is in the borough of Kensington and Chelsea where some of the most expensive houses/flats in the WORLD are located and no "normal" person can afford to buy or rent an house of flat there (a "cheap" house in the area will cost >£700K and if you are renting you are looking at maybe £2000 a month for a two bedroom flat).

Now, the counsel still owns many (but not all) of the flats in these towers and the rent is controlled (very cheap by London standards), meaning it is usually the only place where these people can afford to live. This means that if/when these towers are demolished there is simply nowhere for the people to go, towers got a bad reputation in the UK so counsels haven't built many new ones in the past 30 years or so and you would need a large amount of space if you were to two or three story houses with 120 flats. That amount of space would cost an enormous amount of money to buy(not that it is available)

All of this means that whereas many of these towers should probably be demolished we will be stuck with them for a long time; which is why they are being renovated.

The news said that the cladding was put in place during a recent refurbishment. I was under the impression that it was the cladding (and gas lines i hear occasionally) that were the problem.

 

[f95toli]

The news said that the cladding was put in place during a recent refurbishment. I was under the impression that it was the cladding (and gas lines i hear occasionally) that were the problem.

Indeed, the refurbishment wasn't even finished yet which is -presumably- why not all the new gas lines had been boxed in (they had finished work in about 1/3 of the flats).

 

[Mikezilla]

http://www.independent.co.uk/news/u...tests-fail-local-authorities-uk-a7816311.html

Lord Porter, chairman of the Local Government Association, attacked the Government for testing only the core of the panels on high-rise blocks and not the insulation behind them, which may not be fire-resistant.

“The Government has not done the retest properly,” the Tory peer said.

“They are not testing the whole system. We should be testing the insulation. There is more than a good chance that the insulation is probably the main problem.”​

 

[jim hardy]

I agree.

 

[Mikezilla]

Another thing Jim is the window replacements in the refurb. If they were brought forward from the original concrete frames (they were at least planned for from architect drawings), you have gaps to be filled with insulation and caulk. If those materials aren't fire-resistant, then fire could easily travel from inside to out and vice versa long before the glass breaks from the heat. Judging from video and seeing nearly every flat engulfed in flames, I'd say this is the case, and no, those weren't fire-stopping materials they used.

Windows are huge in the energy efficiency game. It really looks to me like the authorities tried to slap on as much insulation and glass on this building as they possibly could in the cheapest way possible to cut future costs, and simply ignored the fire risks. After all, it's public housing and residents (mostly immigrants) can only afford to live there because they're on the public dole to begin with. It's a mess in UK, but no excuse for ppl dying like that.

 

[jim hardy]

Disasters are always a string of dominoes set up ready to topple.
Biggest single mistake i see was that two inch air space between the fire 'resistant but not fireproof' foam and the reflective aluminum rain shield .
from post #18

Anybody who's ever burned a trash pile knows about the chimney effect and how it'll make stuff that's not supposed to burn, burn.

Most people think these are for mechanical bracing behind their drywall. But they're firestops , to block the chimney effect.

http://www.askthebuilder.com/fire-stop-construction/

Somebody violated common sense .

old jim

 

[Mikezilla]

No conflict of interest here, sigh...

Mark Allen is a technical director for the UK arm of Saint-Gobain, an owner of Celotex, which produced the insulation used in the tower.

He is also a member of the Building Regulations Advisory Committee, which makes recommendations about industry regulations to Communities Secretary Sajid Javid.

http://www.dailymail.co.uk/news/art...tower-insulation-boss-government-adviser.html​

 

[jim hardy]

From that Daily Mail piece:

However, its 'health and safety datasheet' notes: 'The products will burn if exposed to a fire of sufficient heat and intensity.'

Allen's LinkedIn profile shows degrees in architecture and business management .

 

[Mikezilla]

It's interesting Jim that Studio E spec'd out at least two different cladding materials in 2014. One was the ACM, but they chose a glass fibre reinforced concrete cladding for the triangular pillars.

GRC is a new thing that can be shaped in all sorts of intricate ways. This stuff doesn't sound flammable at all, although it contains a small percentage of recycled materials.

I doubt this was the material approved by authorities, probably due to cost-cutting. If so, what was used, and how was it installed?

 

[Mikezilla]

Just to add, the "chimney effect" was most pronounced at those triangular pillars. Flames spread up far faster than sideways. Looks to me like the architect knew the pillars presented a challenge that called for different material, but that was changed.

Just me speculating from what's been disclosed so far.