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Sunday20 August 2017

Don’t condemn all high rises, says C20 Society director

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‘Focus must fall on maintenance and management of tower blocks’

The director of the Twentieth Century Society has urged people not to condemn all tower blocks after the Grenfell Tower tragedy.

It is so often poor maintenance and management that causes problems, not the fundamental design of tall buildings, said Catherine Croft.

But she called for more research and close scrutiny of fire protection measures to reassure residents of other blocks of flats.

In a statement she said: “C20 Society is shocked by the appalling loss of life and destruction of people’s homes.

“This was not an architecturally distinguished tower block, but a typical example of a system built block, which nevertheless provided decent sized flats.

Catherine Croft

Catherine Croft

“C20 regularly sees blocks of this period blighted by poor maintenance and inadequately resourced management. 

“It seems likely that such factors, as well as possible design or construction inadequacies with the recent refurbishment may have had tragic consequences.

“More research and tight regulation of fire protection measures is clearly necessary as soon as possible, to reassure everyone living in similar blocks, but the correct response is not to condemn all high rise living.”

Meanwhile RIBA president Jane Duncan called for a swift public inquiry into the fire in the west London block which killed at least 17 people and injured many more.

She tweeted: “Fire & people safety is absolute top priority. There must be a prompt public enquiry to clarify how Grenfell Tower tragedy ocurred @RIBA”

Her call was backed by architect Walter Menteth who tweeted: “Many people are living today in recently refurbed high rise. Gov must set up inquiry immediately + also evaluate need 4 emergency measures.”

Newly elected Labour MP for the area Emma Dent Coad was at the scene yesterday. She tweeted a link to a crowdfunding site set up by a teacher at a local school: https://www.justgiving.com/crowdfunding/familiesofgrenfelltower.

Update

The London Fire Brigade has said its Urban Search and Rescue teams are to start work with local authority contractors to secure Grenfell Tower, as they attempt to make the structure safe following yesterday’s devastating fire.

The number of deaths from the fire at 24-storey Grenfell Tower has risen to 17, the Metropolitan Police has confirmed, but expects the toll to rise.

The Met also confirmed that 37 people are still in hospital with 17 people are still in a critical condition. Around 60 firefighters and eight fire engines remain at Grenfell Tower this morning.

The cause of the fire is still not known and will be the subject of an thorough investigation, the fire brigade added.

The prime minister Theresa May visited the site this morning. The Queen has also paid tribute to the bravery of the emergency services and said her thoughts are with those affected by the tragedy.

Grenfell Tower had recently had refurbishment works, completed last year, which included new windows and cladding, a new efficient communal heating system and bespoke smoke extractor and ventilation system.

The works, carried out by contractor Rydon and overseen by architecture practice Studio E, also included extensive remodelling of the bottom four floors, which created nine additional new homes and improved spaces for two local businesses. Harley Facades completed the installation of the new cladding in September 2016 according to a post on the firm’s Facebook page.

Rydon issued the following statement yesterday.

“We are shocked to hear of the devastating fire at Grenfell Tower and our immediate thoughts are with those that have been affected by the incident, their families, relatives and friends.

“Rydon completed a refurbishment of the building in the summer of 2016 for KCTMO (Kensington and Chelsea Tenant Management Organisation) on behalf of the Council, which met all required building control, fire regulation and health & safety standards. We will cooperate with the relevant authorities and emergency services and fully support their enquiries into the causes of this fire at the appropriate time.

“Given the ongoing nature of the incident and the tragic events overnight, it would be inappropriate for us to speculate or comment further at this stage.”

The building is managed by Kensington and Chelsea Tenant Management Organisation (KCTMO) on behalf of the council.

KCTMO have said: “The events of last night and early this morning are a tragedy. KCTMO, in conjunction with RBKC and others, is doing everything it can to assist the residents of Grenfell Tower and those affected by the tragedy. This will remain our immediate concern and focus.

“It is too early to speculate what caused the fire and contributed to its spread. We will co-operate fully with all the relevant authorities in order to ascertain the cause of this tragedy.

“We are aware that concerns have been raised historically by residents. We always take all concerns seriously and these will form part of our forthcoming investigations. While these investigations continue with our co-operation, our core priority at the moment is our residents.”

 

Grenfell Tower: What we know

Grenfell tower was constructed in the 1970s. It features four storeys of community and office use at the base of the building with 20 storeys of flats above.

The building features an in-situ concrete core and concrete escape stair and lifts in the centre. The floors are in-situ concrete with the flats arranged around the core. This is a straightforward and standard form of construction that is widely used today.

The building has been upgraded with a new heating and cladding system. The cladding features spandrel panels at cill height with alternating windows and panels above. The windows are a polyester-powder coated aluminium tilt/turn design. The spandrel panels are a rainscreen cassette system fixed to the building. Drawings suggest the cassettes feature a timber coloured backing board with insulation - possibly a foam type material - fixed to this panel. There is a ventilated cavity in front of the insulation which the drawings suggest is approximately 50mm deep.

This cavity features horizontal cavity barriers to prevent the spread of fire. The building is faced with aluminum rainscreen panels. A Reynobond aluminium composite panel was specified. Reynobond aluminum composite panels feature two aluminum sheets sandwiching a core material which gives the panel its rigidity.

According to Reynobond’s website the panels are available in two variants, one with a polyethylene core, which is a type of plastic and a version with a fire retardant mineral core said to provide higher resistance to fire.

Thomas Lane, Building Design editor

 

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Readers' comments (11)

  • Horrible what happened.

    Camden Council recently tried to install similar cladding on the block where I live against the wishes of ALL the residents.

    The council completely ignored all the objections and planned to charge leaseholders around £8,000 per flat! The council only
    backed down when the residents commissioned their own study rubbishing the council's claims about the so-called benefits and when we threatened legal action.

    Many people who commission these council-led refurbishment works are completely incompetent, with tragic results.

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  • Apart from the obvious rapid spread of fire via the cladding. Means of escape a major issue. One escape route, the stair, obviously totally inadequate. There should be an agreed evacuation strategy as part of any fire risk assessment. Waiting for 'rescue' by the fire brigade is always the last resort.

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  • Obviously this particular type of cladding should not be used ever again. The system allowed for the fire to jump to adjacent panels all with inflammable cores, so spread very very rapidly.

    But people are saying that a sprinkler system would have saved lives had it been installed. I am not sure how, given that the people were stuck inside a metal box which was on fire?

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  • I am Alex

    Not sure where the 'timber effect' part of the cladding comes from BD, All photos of the block show an anthracite and white/silver colour scheme or Reynobond type cladding with PIR/PUR foam foil faced insulation behind with mineral wool/intumescent fire breaks.

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  • I am Alex

    Having looked at another construction photo it looks like the spandrel has a timber carrier panel behind, I take it back!

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  • Really C20 society? A lot of these could have been saved if they were able to jump from the building unscathed, which you can't do in a high-rise.
    LIVES BEFORE SKYLINE

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  • Seymour Alexander

    A series of fire-protected chutes outside the building could have saved lives. Works on airliners.

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  • In principle the long term plan should be to replace all council owned residential towers with new low-rise development. Only where a clear case can be made for the merits on an individual high-rise building should retention and refurbishment be the preferred option.

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  • SomeoneStoleMyNick

    Trust the C20 society to chip in with inappropriate remarks.

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  • So C20 Society deems what the correct response should be!? Better to say nothing at all...

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