Ground Anchors
Strand Anchors
Technical Data
Strand Anchors are constructed from compacted strand, grade 1550/1820 N/mm2
| Number of Strands | Ultimate Strength | 0.1% Proof (Yield Strength) |
| kN (fpu) | kN (Ty) | |
| 1 | 300 | 255 |
| 2 | 600 | 510 |
| 3 | 900 | 765 |
| 4 | 1200 | 1020 |
| 5 | 1500 | 1275 |
| 6 | 1800 | 1530 |
| 7 | 2100 | 1785 |
| 8 | 2400 | 2040 |
| 9 | 2700 | 2295 |
| 10 | 3000 | 2550 |
| 11 | 3300 | 2805 |
| 12 | 3600 | 3060 |
| Higher capacity anchors are available through the addition of further strands. | ||
Temporary Bar Anchor
(Lifespan: up to 2 years)
Permanent Bar Anchor with Double Corrosion Protection
(Lifespan: up to 120 years)
Permanent Strand Anchors: Head Assemblies
| Standard (not restressable) | Threaded Headblock (restressable) | Long End Cap (restressable) |
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Corrosion Protection for Permanent Strand Anchors
The same principles of corrosion protection for Permanent Bar Anchors apply for Permanent Strand Anchors, to ensure durability throughout the lifespan. For Permanent Strand Anchors, Double Corrosion Protection is achieved by two independent layers of plastic sheathing as follows:
Bond Length
Two concentric corrugated plastic sheaths (typically factory pregrouted).
Free Length
Individual plastic sheaths (smooth) for each strand, all enclosed within a common external corrugated plastic sheath. Protection at the anchor head is provided by a fully enclosed assembly. Borehole grout is not recognised as a corrosion protection barrier by current anchor standards (BS8081 or EN1537) . Anchors are factory assembled and coiled (except for pregrouted bond length) prior to delivery.
