Building uses post-tensioned system as quake-resistance technique

02/16/2012 | Engineering News-Record · Engineering News-Record

The $145.5 million, 164-foot-tall San Francisco Public Utilities Commission Headquarters in California was designed as a lateral-load-resisting structure to reduce potential damage in an earthquake. "The concrete shear-wall core system relies on unbonded vertical post-tensioning (PT) in core walls" to combat lateral loads and help the building replumb itself. However, the viability of using post-tensioned systems to minimize earthquake damage remains to be seen as it hasn't been put to the test by a strong earthquake in the U.S.

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