A Japanese company is planning to build the world's tallest wooden skyscraper, to mark its 350th anniversary in 2041.
Sumitomo Forestry said 10% of the 70‑storey tower would be steel, combined with about 180,000 cubic metres of indigenous wood, enough to build about 8,000 homes.
It said a "braced tube structure", diagonal steel vibration‑control braces at the centre of a 350m (1,150ft) wood and steel column, would protect against Tokyo's regular earthquakes.
The projected cost of the building is about 4.02 billion pounds about twice the cost of a conventional skyscraper of the same size.
But Sumitomo said it expected costs to fall before completion due to technological breakthroughs.
The W350 tower would be used for offices, shops, hotels and homes.
Source: www.bbc.com
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