Sky City: China Plans to Construct World's Tallest Building in 90 Days

Sky City will soon replace the Burj Khalifa as the world's tallest building, as China plans to one-up Dubai's structure in just 90 days, Business Insider reported.

The tower will be 220 stories and 383 feet high — a mere 10 meters higher than the Burj — and boast a capacity of 70,000 to 120,000 people, according to Next Big Future.

Chinese construction company Broad Sustainable Building (BSB) will construct the residential, commercial and retail space in Changsha, the provincial capital of Hunan Province, Wired reported.

BSB has plenty of experience with speedy building projects: they have built three-story building in nine days and a 30-story hotel in just 15 days, both in Changsha, according to Business Insider.

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The building will include a hotel, school, hospital, offices, shops, and restaurants, which will be accessible via 104 elevators, Forbes reported.

BSB plans to use prefabricated materials built at its' factory over around four months, which will then be assembled in two months on site, according to Business Insider.

For some points of comparison, New York's Empire State Building took 410 days to build from start to finish, and the Burj Khalifa took six years days between construction beginning in 2004 and its opening in January 2010. Sky City is set to open in January 2013.

The structure will cost four billion Yuan, or about $628 million, according to Forbes. Dubai’s Burj Khalifa cost an estimated $1.5 billion.

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However, some are skeptical about the building's integrity.

"So far, Sky City does not look like a winner," wrote Forbes' China correspondent Gordon Chang. "Broad originally planned a 666-meter skyscraper, but the local government wanted the world’s tallest. That’s a dead giveaway politics are distorting the economics of the project."

BSB signed an agreement last week with local district authorities in Changsha, Inhabitat reported, but it is still awaiting approval from the central government.

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Sky City One in China: 104 Elevators, Living Space for 174,000

The secret to building the world’s tallest building in only 90 days, at much less cost of its nearest rival building? Prefabrication.

Broad Group, a construction company in China, has announced it will built the world’s tallest skyscraper in just 90 days. Plus, says Broad Group, its building will be much cheaper to build than the Burj Khalifa in Dubai (United Arab Emirates) which is currently the world’s tallest manmade structure at 830 meters (2,723 feet). Broad Group’s Sky City One – which will be located in the city of Changsha, Hunan in south-central China – will be 838 meters tall. In contrast to the Burj Khalifa, which cost $450 per square foot to build, Sky City One will cost $63 per square foot.

It's tall alright. Assuming approval by the Chinese government is forthcoming, Sky City One will be the tallest building in the world when it's completed. Image Credit: Broad Group

Broad Group’s secret? Prefabrication. About 95 percent of Sky City One will be put together in modular form before work commences on site.

Given government approval (which is still pending), Sky City One could be completed as early as January 2013, according to Broad Group, after 90 days of assembly. When completed, Sky City One will have living space for 174,000 people on 220 floors – 1 million square meters (11 million square feet) of floor space – with 104 elevators.

The projected cost for Sky City One is $628 million (US). That’s in contrast to the Burj Khalifa, whose total cost was about $1.5 billion (US). And all in one-twentieth of the time that the Burj Khalifa took to build, according to Broad Group.

But the Burj Khalifa in Dubai has Sky City One beat in one way. It was featured in the movie “Mission Impossible Ghost Protocol.” Remember that really tall building? Yep. That was it.

Bottom line: A Chinese construction company called Broad Group says it will built the world’s tallest skyscraper in just 90 days – for much less cost – the Burj Khalifa in Dubai, currently the world’s tallest manmade structure. The builders will accomplish this using prefabrication, building modules on the ground before assembly of the skyscraper begins.

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Cina Mampu Bangun Gedung 220 Tingkat dalam 90 Hari?

Sebuah perusahaan konstruksi Cina bersikeras mengatakan bahwa pihaknya akan dapat membangun gedung pencakar langit tertinggi di dunia hanya dalam beberapa minggu.

 

Perusahaan Broad Sustainable Building mengatakan kepada majalah Construction Week, pihaknya yakin dapat menyelesaikan Sky City, gedung yang direncanakan akan memiliki 220 tingkat tersebut, hanya dalam 90 hari.

Perusahaan itu mengatakan akan menyelesaikan bangunan setinggi 838 meter di kota Changsha dengan kecepatan menakjubkan, sebanyak lima tingkat per hari, dengan menggunakan metode khusus yang menyatukan bagian-bagian bangunan yang sudah dibuat sebelumnya.

Para pejabat mengatakan konstruksi bangunan diperkirakan akan dimulai akhir tahun ini, namun mereka masih menantikan persetujuan pemerintah Cina atas proyek tersebut. Gedung itu nantinya akan didiami lebih dari 31.000 orang, termasuk sekolah, rumah sakit, kantor-kantor dan bisnis lainnya.

Gedung tersebut dirancang oleh para insinyur yang merancang Burj Khalifa di Dubai, dengan ketinggian 828 meter, yang saat ini merupakan gedung tertinggi di dunia.

Broad Sustainable Building mulai dikenal pada akhir tahun 2011, saat perusahaan itu membangun sebuah gedung 30 tingkat hanya dalam waktu 15 hari dengan menggunakan teknologi yang sama.

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China Bangun Menara Tertinggi di Dunia Selama 90 Hari

Menara tersebut bakal berdiri di kawasan Chansha, wilayah Provinsi Hunan, China.

Sebuah perusahaan konstruksi asal negeri China, telah merilis rencananya untuk membangun sebuah menara atau bangunan tertinggi di dunia hanya dalam kurun waktu 90 hari.

Pihak Broad Construction menyatakan, bangunan tertinggi itu rencananya bakal mempunyai 220 lantai, yang nantinya akan mencakup sebuah sekolah, rumah sakit, 17 helipad dan apartemen yang dapat menampung sekitar 30.000 orang.

Bangunan menara yang dijuluki Sky City ini, akan dikembangkan di kawasan Chansha, wilayah Provinsi Hunan, China.

Pihak pengembang menara ini rencananya akan membangun lima lantai dalam satu hari, dengan menggunakan komponen bangunan yang dirakit bersamaan (prepabrikasi) seperti potongan-potongan Lego.

Sampai saat ini, pihak Broad Construction sendiri mengklaim bahwa mereka telah sukses dalam membangun sekitar 17 gedung bertingkat di sejumlah wilayah daratan China.

Hebatnya, untuk membangun sebuah hotel dengan ketinggian 15 lantai, mereka hanya memerlukan waktu dua hari saja.

Pihak perusahaan sendiri menyatakan, konsep bangunan mereka miliki cukup aman dan berbeda dari yang diperkirakan oleh banyak kalangan.

Pendiri dan chairman Broad Construction, Zhang Yue, merupakan tokoh kunci dalam merancang proses pengerjaan bangunan yang dikatakan tahan terhadap gempa.

Dalam pengerjaan konstruksi bangunan, mereka menggunakan adukan semen yang lebih ringan untuk pengerjaan lantai dan penggunaan bahan baja ringan yang berbeda dari bangunan biasa.

Zhang menyatakan, dengan mengurangi berat bahan bangunan, maka semua konstruksi bangunan yang dikembangkannya bisa menahan gempa berkekuatan 9,0 skala richter.

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