World's 'tallest tower' to be built in 9 months, drawing doubts and safety

[Manindra]

A Changsha developer dazzled the world when it built a 30-storey hotel within 15 days. Now as it aims to construct the world's tallest building in a mere nine months, experts are raising questions about safety and wondering whether the project is part of a technological revolution or a public relations campaign.

On Saturday, a ground-breaking ceremony marked the start of construction of an 838-metre, 208-storey skyscraper on the outskirts of Hunan’s capital city, which its developer Broad Group estimated would be completed by April next year. If all goes to plan, the building will be crowned the world’s tallest building and be 10 metres taller than the Burj Khalifa in Dubai, which currently holds the title.

Some construction experts, however, have expressed doubts over the developer’s projections, questioning whether the astoundingly short construction period would be possible and whether the timeframe would compromise safety.

“The techniques Broad Group are using are unprecedented in the world,” said Yin Zhi, director of Tsinghua University’s School of Urban Planning and Design.

“It either has achieved a stunning breakthrough in architectural technologies, or it is a fraud,” Yin told cnr.cn, the website of state-run CCTV.

Even if the project does signal a major breakthrough, Yin added, the technology could be put to better use in more economic and pragmatic areas, not to compete for the tallest-building title.

Using a novel modular construction method, Broad Group pre-manufactures most parts of the building in factories, and then assembles them once construction starts – like building with giant Lego pieces. In 2011, a time-lapse video shocked the world, showing Broad Group building a Changsha building at a rate of two days per floor.

Senior architect Lu Yin also found the Broad's projected construction period beyond belief, the CCTV website reported. He noted that what worked in the past for low-level buildings might not work on skyscrapers that are well over 100 floors.

Super high-rise buildings usually take about five to 10 years to construct when using conventional techniques. Burj Khalifa in Dubai, for example, took Arabs 47 months to build.

Zhang Yue, founder and chairman of the Broad Group, said the concerns were unnecessary. “The overall structure is extremely steady. It adopts that of a the pyramid shape and does not differ much from that of the Great Wall,” he told China News agency.

With an all-steel frame and fire-proof boards, the building will survive earthquakes up to magnitude 9 and potential fires, Zhang added.

Experts also raised doubts about potential safety hazards in the building last year when the building was still undergoing an assessment process.

The director of Hunan University’s School of Architecture, Wei Chunyu, who was a member of the assessment panel, was concerned the building could have safety hazards. He was especially worried that if a fire erupted on higher levels, it would be hard to contain and lead to disasters.

Accoding to the developer, the skycraper will have 1.05 million square metres floor space and cost a whopping 9 billion yuan (HK$11.3 billion) to build. Named “Sky City”, the mega building is designed to house various public facilities so the “building can serve as a city”, the developer boasted. It would house schools, an elderly care centre, hospital, offices in lower levels.

More Info

 

[Soryu]

How they can build it so fast !???

 

[ephone]

CCP need do something to curb those stupid city leaders for such stunts. We need healthy growth.

 

[StarCraft_ZT]

How they can build it so fast !???

They just assembled all different kinds of components that were already built in factories, I guess. Assembly is much cost effective.

 

[visom]

They just assembled all different kinds of components that were already built in factories, I guess. Assembly is much cost effective.

I think another reason might be constructing just the building itself. Speed built buildings usually aren't 100% complete with water or heating/cool systems, it only has the building itself.

 

[StarCraft_ZT]

I think another reason might be constructing just the building itself. Speed built buildings usually aren't 100% complete with water or heating/cool systems, it only has the building itself.

Yes, as they said, "like building with giant Lego pieces"

The building's fully operation still needs electricity and water system, security system, and decoration.

 

[Nan Yang]

I think another reason might be constructing just the building itself. Speed built buildings usually aren't 100% complete with water or heating/cool systems, it only has the building itself.

The builder, Board Group is originally an Air-con manufacturer. They developed a very efficient A/C for large buildings. Their earlier building that were build using the same techniques had A/C build-in which has capability to filtered out fine particle. 20X cleaner then outside air.

If you look at this video, it shows A/C ducts, water pipe and electrical cables being installed in the factory before shipping to the building site.

https://www.youtube.com/watch?v=Hdpf-MQM9vY

 

[StarCraft_ZT]

The builder, Board Group is originally an Air-con manufacturer. They developed a very efficient A/C for large buildings. Their earlier building that were build using the same techniques had A/C build-in which has capability to filtered out fine particle. 20X cleaner then outside air.

If you look at this video, it shows A/C ducts, water pipe and electrical cables being installed in the factory before shipping to the building site.

https://www.youtube.com/watch?v=Hdpf-MQM9vY

Yes, that is the video I am looking for.

Broad Group is planning another 838m building in Changsha, highest in the world. They predict that it will be completely built in 4 months.

 

[Truth Finder]

10-storey building built in 48 hours in Mohali(India)

Mohali: It was a promise delivered floor by floor. In just 48 hours, an entrepreneur has constructed a 10-floor building in Mohali, a suburban town in Punjab.

The red and grey facade building, Instacon, stood tall on an industrial plot in Mohali, 10 kilometres from Chandigarh today, two days after Punjab Deputy Chief Minister Sukhbir Singh Badal had laid its foundation stone.

Work on the building's construction started around 4:30 pm on Thursday. By Friday evening, the building saw seven floors in place.

As the deadline of 48 hours approached, all the 10 floors of the building were in place even though the glass-panes on the windows and other fittings inside were still being put by the workers and engineers.

The building used pre-fabricated material, including 200 tonnes of steel.

"Our effort was to put the 10-storeyed structure in place within 48 hours. We wanted to prove that this could be done. That feat was achieved well within 48 hours. Just some finishing touches remain. This is only a sample structure," an official of Synergy Thrislington infrastructure company told IANS at the site.

Entrepreneur Harpal Singh, who heads the Rs1,000-crore infrastructure company, had promised that the 10-storey building would be completed within 48 hours.

"This will be the first building of its kind in the country to be built in just 48 hours. The model has been cleared for Zone-V seismic area, the highest risk area (for earthquakes)," Harpal Singh, who owns the JW Marriot Hotel in Chandigarh, had said earlier.

Three floors of the building were constructed in just six hours on Thursday.

Over 200 skilled workers, technicians, engineers and equipment were engaged in the building construction.

The material being used was manufactured in the past two months in a nearby factory.

"No bricks and sand has been used. The outer wall is a double-skinned PUF panel. The cost is almost the same as of conventional construction material. It saves a lot of time that goes into construction otherwise," said officials at the site.

Harpal Singh said that the idea to construct such a building came to him when he was constructing his own house, which took two years to complete - thanks to truant workers.

Mr Singh's company, Synergy, took over Britain-based Thrislington Products, a re-locatable steel partition manufacturer, to set up the new infrastructure company in Mohali.
NDTV.

 

[Nan Yang]

10-storey building built in 48 hours in Mohali(India)

Mohali: It was a promise delivered floor by floor. In just 48 hours, an entrepreneur has constructed a 10-floor building in Mohali, a suburban town in Punjab.

The red and grey facade building, Instacon, stood tall on an industrial plot in Mohali, 10 kilometres from Chandigarh today, two days after Punjab Deputy Chief Minister Sukhbir Singh Badal had laid its foundation stone.

Work on the building's construction started around 4:30 pm on Thursday. By Friday evening, the building saw seven floors in place.

As the deadline of 48 hours approached, all the 10 floors of the building were in place even though the glass-panes on the windows and other fittings inside were still being put by the workers and engineers.

The building used pre-fabricated material, including 200 tonnes of steel.

"Our effort was to put the 10-storeyed structure in place within 48 hours. We wanted to prove that this could be done. That feat was achieved well within 48 hours. Just some finishing touches remain. This is only a sample structure," an official of Synergy Thrislington infrastructure company told IANS at the site.

Entrepreneur Harpal Singh, who heads the Rs1,000-crore infrastructure company, had promised that the 10-storey building would be completed within 48 hours.

"This will be the first building of its kind in the country to be built in just 48 hours. The model has been cleared for Zone-V seismic area, the highest risk area (for earthquakes)," Harpal Singh, who owns the JW Marriot Hotel in Chandigarh, had said earlier.

Three floors of the building were constructed in just six hours on Thursday.

Over 200 skilled workers, technicians, engineers and equipment were engaged in the building construction.

The material being used was manufactured in the past two months in a nearby factory.

"No bricks and sand has been used. The outer wall is a double-skinned PUF panel. The cost is almost the same as of conventional construction material. It saves a lot of time that goes into construction otherwise," said officials at the site.

Harpal Singh said that the idea to construct such a building came to him when he was constructing his own house, which took two years to complete - thanks to truant workers.

Mr Singh's company, Synergy, took over Britain-based Thrislington Products, a re-locatable steel partition manufacturer, to set up the new infrastructure company in Mohali.
NDTV.

China already done that except that they built a 15 story building and way back in 2010.

https://www.youtube.com/watch?v=Ps0DSihggio

 

[AUz]

This is stupid.

Since when Chinese started doing gimmicks?

 

[Nan Yang]

This is stupid.

Since when Chinese started doing gimmicks?

No Gimmick. Its all just Engineering...to a new level.

Here is another. 6 Story in 1 day !
http://www.youtube.com/watch?v=txhSY41G9Gw

 

[sms]

It's called large panel system building and in existance since 1930s.

More info on attached page ..
Plattenbau - Wikipedia, the free encyclopedia

 

[Reashot Xigwin]

10-storey building built in 48 hours in Mohali(India)

Mohali: It was a promise delivered floor by floor. In just 48 hours, an entrepreneur has constructed a 10-floor building in Mohali, a suburban town in Punjab.

The red and grey facade building, Instacon, stood tall on an industrial plot in Mohali, 10 kilometres from Chandigarh today, two days after Punjab Deputy Chief Minister Sukhbir Singh Badal had laid its foundation stone.

Work on the building's construction started around 4:30 pm on Thursday. By Friday evening, the building saw seven floors in place.

As the deadline of 48 hours approached, all the 10 floors of the building were in place even though the glass-panes on the windows and other fittings inside were still being put by the workers and engineers.

The building used pre-fabricated material, including 200 tonnes of steel.

"Our effort was to put the 10-storeyed structure in place within 48 hours. We wanted to prove that this could be done. That feat was achieved well within 48 hours. Just some finishing touches remain. This is only a sample structure," an official of Synergy Thrislington infrastructure company told IANS at the site.

Entrepreneur Harpal Singh, who heads the Rs1,000-crore infrastructure company, had promised that the 10-storey building would be completed within 48 hours.

"This will be the first building of its kind in the country to be built in just 48 hours. The model has been cleared for Zone-V seismic area, the highest risk area (for earthquakes)," Harpal Singh, who owns the JW Marriot Hotel in Chandigarh, had said earlier.

Three floors of the building were constructed in just six hours on Thursday.

Over 200 skilled workers, technicians, engineers and equipment were engaged in the building construction.

The material being used was manufactured in the past two months in a nearby factory.

"No bricks and sand has been used. The outer wall is a double-skinned PUF panel. The cost is almost the same as of conventional construction material. It saves a lot of time that goes into construction otherwise," said officials at the site.

Harpal Singh said that the idea to construct such a building came to him when he was constructing his own house, which took two years to complete - thanks to truant workers.

Mr Singh's company, Synergy, took over Britain-based Thrislington Products, a re-locatable steel partition manufacturer, to set up the new infrastructure company in Mohali.
NDTV.

& why are you even putting this up? This is a news about the Chinese proposed building not an Indian one.

 

[+4vsgorillas-Apebane]

prefab construction is the future and is particularly ideal for developing countries. Almost the entirety of the building is manufactured in modular panels in assembly lines thus increasing material and time efficiency. Provided that its done right, it is no less safe that conventional buildings.