DYWIDAG Strand Anchor Systems

DYWIDAG Permanent Strand Anchors with DCP (double corrosion protection)

DYWIDAG Permanent Strand Anchors with DCP (double corrosion protection)
  1. Cover Cap (optional)
  2. Wedges
  3. Wedge Plate
  4. Bearing Plate with Trumpet
  5. Greased and Hot Melt-Plastic Extruded Strand
    (Unbonded Length)
  6. Corrugated Plastic Sheathing
  7. End Cap
  8. Post-Grout Line (optional)
  9. Bare Strand (Bond Length)
  10. Centralizer
  11. Spacer
DSI Tower Foundations schema
Tower Foundations
DSI Foundation Uplift Anchors schema
Foundation Uplift Anchors
DSI Slope Stabilization schema
Slope Stabilization

Epoxy Coated Strand Anchors for a Dam Upgrade
Epoxy Coated Strand Anchors for a Dam Upgrade

Rock Anchors

Rock anchors are post-tensioned tendons installed in drilled holes for which at least the entire bond length is located in rock. The anchor force is transmitted to the rock by bond between the grout body and the rock. Rock anchors can remain unbonded in the free stressing length allowing the anchor to be checked and re-tensioned at any time. In such cases, adequate corrosion protection for the stressing anchorage and the free stressing length must be provided.

On the other hand, the free stressing length can also be fully grouted after the anchor has been stressed, in which case future load adjustment is no longer possible.

Typical Uses for Rock Anchors

  • Resist external and uplift forces caused by wind or seismic event.
  • Tie back retaining walls.
  • Stabilize eccentrically located foundations, slopes, rock walls, and cuts.
  • Increase the stability of dams or large bridge foundations.