POST- TENSIONED FOUNDATIONS
POST- TENSIONED CONCRETE IN BUILDING CONSTRUCTION
While the use of prestressing in superstructures is well established, foundations have only rarely been prestressed. Apart from certain technical considerations, this may be due to some conservatism inherent in foundation engineering. The purpose of this report is to contribute to an improved understanding and a more widespread application of post-tensioning in foundation engineering. It is shown that subgrade friction and similar restraining actions influence the effectiveness of the prestressing less than is frequently assumed. In fact, with proper application, the well-known advantages of prestressing can also be exploited in foundation engineering.