GTI engineers a broad array of high quality unbonded post-tensioning slab-on-ground products for the safe and reliable construction of ground-supported structural foundations. From fixed-end and stressing-end anchorages, wedges and pocket formers to slab-on-ground intersectional chairs, we offer our products in a variety of sizes and heights to best meet the needs of building foundations on the expansive soils found in the majority of the U.S.