Olympic cauldron built in 'Bond-style gadget
workshop' says architect as organisers vow to make giant flame carbon neutral
- Thomas Heatherwick surprised unique design given go-ahead by 2012
chiefs
- Fuelled by natural gas which is pumped through each of its 204
petals stems
- Petals made from steel using acid treatment that gives it 'bad
black' colour
- Organisers working with EDF energy to ensure all emissions will be
offset
- Rehearsals carried out at night to keep details a closely guarded
secret
- Entire structure weighs just 16 tonnes. Cauldron in Beijing was 300
tonnes
By Daily Mail Reporter
The lighting of the Olympic cauldron at last night's opening
ceremony was, if nothing else, wonderfully unique.
The giant flame's design was so sophisticated the studio where
it was crafted looked more like James Bond's gadget workshop, its architect
revealed today.
Thomas Heatherwick said he was pleasantly surprised when the
idea to have 204 separate petals come together to form one giant flame got the
go-ahead from a range of officials including Prime minister David Cameron and
London 2012 chairman Lord Coe.
Going green: Each of the 204 petals is fuelled by natural
gas, which means energy consumption can be reduced significantly and the flame
will still burn brightly
Measuring just 8.5 metres high and weighing 16 tonnes, it is
far smaller and lighter than ones from previous events. The one lit in Beijing
four years ago weighed a staggering 300 tonnes.
Mr Heatherwick, who developed it at his Heatherwick Studio
in Kings Cross, London, said: 'We were aware cauldrons had been getting bigger,
higher, fatter as each Olympics happened and we felt we shouldn't try to be
even bigger than the last ones.
'This incredible event has 204 nations coming together, so
we had a child from each country bringing these copper polished objects in.
'At the end of the Games, this cauldron will dismantle
itself and radiate back down to the ground and each of those copper pieces take
away by each nation and put in a national Olympic cabinet somewhere.'
Blooming marvellous: This series of photographs shows each
of the 204 copper and steel petals of the Olympic cauldron being lit before
being lifted up to form one giant flame
The London Organising Committee of the Olympic Games (Locog)
requested the flame be powered by natural gas, which is pumped individually
through the stems of each petal.
A spokeswoman told MailOnline: 'The multiple burners means
that the burn-rate is flexible.
'The gas flow can be reduced very significantly - this means
we can reduce our gas consumption from 100 per cent down to 15 per cent.
'We are constantly monitoring the flow rate to ensure the
minimum quantity of gas is burned.'
Locog is also working with energy company EDF to see that
all of the carbon emissions will be offset.
Intricate engineering has gone into the design to ensure the
flame does not go out, in any 'unforeseen circumstances' it will relit by the
'mother flame' kindled in Olympia, Greece.
The copper petals, created to be 'very small and
humble objects', were made using traditionally skilled craftsmen of the sort
who used to roll sheet metal to make body parts for car makers such as Bentley,
according to Mr Heatherwick.
He said: 'It is like the biggest gadget that anyone can make
in a shed but this shed is the most sophisticate shed in Harrogate.
'It was like the Bond gadget workshop.'
More than a billion people who watched globally along with
the 70,000-plus crowd inside the stadium saw the unique petals being carried by
each of the children as they accompanied each Olympic team into the stadium for
the athletes' parade.
The rods which make up the stem of the cauldron are made of
stainless steel with a heat and acid treatment that makes it a colour called
bad black, which is actually slightly blue.
The petals are copper and the entire structure is about 8.5
metres tall and will be moved from the centre of the stadium overnight
tomorrow.
It will move to the end of the stadium where the huge bell
was struck to signal the start of the opening ceremony.
Like the cauldron the London 1948 organisers used when the
Olympics were last staged in the capital, the cauldron will stay alight inside
the stadium rather than being pitched above it.
The cauldron design team used the fact that the athletes'
parade is a long event, lasting at least 90 minutes, to retrieve the elements
from the centre of the parade and discreetly fix them to specific spots on the
cauldron.
Practice had to be done at night as the lighting of the
cauldron had to be kept secret.
Rehearsals were held in the north of England, but were switched to the stadium
nearer to the grand event.
Mr Heatherwick said: 'It had to stay a secret. We had to
wait until the dancers had gone home so it was about 3am - that was the time
that it (the stadium) was available for use to use.'
The seven teenage up-and-coming athletes who made up the
final torchbearers had 45 seconds to light the cauldron. There was then a
45-second wait before it all lifted into place.
By the time the first ring was in place the last one was
lifting and coming together. 'So it was like a dandelion seed being blown - but
it seemed to work, which was a huge relief,' Mr Heatherwick said.
Mr Heatherwick said he and artistic director Danny Boyle,
the mastermind behind the opening ceremony, wanted something that was not about
being bigger than the last Olympic cauldron, in Beijing, but was about the
people involved in bringing it together.
This is one of the reasons why is was set in the centre of
the stadium with the parading athletes surrounding it.
He said: 'We were thinking about this incredible object with
204 nations coming together. It was a challenge but it did not feel enough to
design a different shaped bowl.'
The cauldron will be split up
at the end of the Games and each piece will be returned to a competing national
Olympic committee (NOC).
Mr Heatherwick said: 'The
cauldron will dismantle itself and come back to the ground. These pieces will
be taken away by the NOC.
'They will be these heated
elements, maybe they will get buffed, but everyone will have a piece.'
Heatherwick Studio was established
in 1994 by Mr Heatherwick, an Honorary Fellow of the RIBA and a Senior Fellow
at the Royal College of Art.
He is the recipient of
honorary doctorates from four British universities – Sheffield Hallam,
Brighton, Dundee and Manchester Metropolitan.
He has won the Prince Philip
Designers Prize and, in 2006, was the youngest practitioner to be appointed a
Royal Designer for Industry.
He has served on numerous
judging and advisory panels and has given lectures, tutorials and talks at the
Bartlett School of Architecture, London’s Victoria and Albert
Museum and Yale University.
The opening ceremony, put
together by Oscar-winning director Danny Boyle, had been cut to three hours to
ensure athletes did not get stranded and left unable to get home.
It was only when organisers
put the final rehearsals together that they realised it would run too late for
public transport.
But some viewers were miffed
that it still didn't finish until gone 12.30am.
Ben Wilson tweeted: 'A great
opening ceremony for @Olympics last night. But I am very tired this morning as
it was a late finish.'
Darren Huckerby added: 'Not
a bad opening Ceremony, late finish though!'
Olympics Minister Hugh
Robertson previously denied the cut had been forced because of problems with
the G4S security firm who failed to employ enough guards for the Games.