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News: SHOCK TREATMENT

UK contractor Amec is strengthening the foundations of the 7km long Richmond-San Rafael Bridge across San Francisco Bay, California, to increase its resistance to seismic forces. The crossing is located between the notorious San Andreas and Hayward faults, but has never yet suffered earthquake damage despite its slender proportions. Under a £40M contract Amec's US foundations unit will install some 500, 300mm diameter micropiles up to 70m long in 31 piers to supplement existing ...

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