POST-TENSIONED ROCK & SOIL ANCHORS
TECHNICAL SUMMARY ANCHOR SYSTEMS
Back to Post-Tensioned Rock &
Soil Anchors Main
Page 1 of 2
Back 1   2 Next

From design through construction, Layne GeoConstruction is the total solution for anchor systems, including tie-down anchors to counteract lateral forces and overturning for dams and critical structures; and tie-backs for excavation support. Layne GeoConstruction has completed many of the largest and most challenging post-tensioned ground anchor projects throughout North America.

Anchors provide a cost effective bracing system for all soil conditions, and are particularly effective in granular soil deposits. With appropriate design and installation techniques, anchors can be equally effective in cohesive soils. Anchor systems can also be used as part of the foundation system to resist hydrostatic uplift forces and/or wind/seismic forces as tie-down anchors.

Anchors, or tiebacks, consist of post-tensioned, grouted steel bar(s) or multi-strand steel wires. As these are structural elements in tension, bars are typically manufactured from Grade 150 steel, and cable systems with Grade 270 steel. Maximum capacities for steel bar anchors are usually about 150 kips. Higher capacity earth and rock anchors are typically an assemblage of strand anchor systems.

Tiebacks, like bracing systems, can be used along with soldier piles, sheeting systems and slurry wall construction.