Post-Tensioned Foundations as Economical Alternative

by Henry J. Cronin, Jr., Eastern Div. Sales Mgr.; VSL Corp., Springfield, Va.,


Serial Information: Civil Engineering—ASCE, 1980, Vol. 50, Issue 3, Pg. 62-65


Document Type: Feature article

Abstract: Although post-tensioned (p-t) foundations have been utilized in the U.S. since the early 1960s, the last five years have witnessed a substantial increase in their implementation. Used principally as a substitute for deep foundations in poor soils with little or no point bearing, the p-t foundation mat will typically eliminate all pile caps, grade beams, and slab-on-grade, and will minimize excavation and backfilling. The final product is water- and crack-resistant, controls deflections and provides uniform settlement. This report describes the different p-t foundation types, advantages and limitations of their use, and case histories of projects constructed in the Washington D.C. area and elsewhere in the U.S. Because the p-t foundation allows a reduction of costly building materials and more rapid construction, the outlook for a continued increase in this approach to foundation design is favorable.

Subject Headings: Concrete | Design | Foundations | Mat foundations | Post tensioning

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