Subsidence of the track surface is the main reason for the improvement works taking place at China’s grand prix venue in Shanghai, it has emerged.<\/p>\n
The April event has only a provisional date on the 2011 calendar, with re-approval of the 7-year-old circuit to only be possible after an FIA inspection in March.<\/p>\n
It was previously believed that the necessary improvements at the $240 million facility were in the area of the track surface and rain drainage.<\/p>\n
The local race organisers have now confirmed that the main problem is subsidence – damage to the track surface due to downwards movement of the ground – at three corners.<\/p>\n
“There should be no problem,” Yang Yibin, manager of race promoter Juss Event, is quoted by the Shanghai Daily.<\/p>\n
“We’ve communicated well with the FIA, our plan has been approved and the grand prix will be on time.”<\/p>\n
The report said the serious subsidence is present at turns 1, 8 and 14.<\/p>\n
The Shanghai International Circuit was built in 2003 on former swampland.<\/p>\n
“Subsidence is normal because of the soft soil in Shanghai, which the circuit was built above,” Yang said.<\/p>\n
And circuit engineering manager Sun Liang told the Oriental Morning Post that artificial elevation changes were built into the layout by using “complex materials”.<\/p>\n
“Because some parts of the circuit are on the ground while some parts are not, as time goes by it’s normal for some subsidence,” he said.<\/p>\n
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