Bar Anchors - Technical Data
| Prestressing Steel | | Bar Diameter | Steel Grade | Ultimate Strength | Yield Strength | | mm | N/mm2 | kN (fpu) | kN (Ty) | | 15 | 900/1100 | 195 | 159 | | 20 | 900/1100 | 345 | 283 | | 26.5 | 950/1050 | 579 | 523 | | 32 | 950/1050 | 844 | 764 | | 36 | 950/1050 | 1069 | 967 | | 40 | 950/1050 | 1320 | 1194 | | 47 | 950/1050 | 1822 | 1648 |
| | GEWI ®-Steel | | Bar Diameter | Steel Grade | Ultimate Strength | Yield Strength | | mm | N/mm2 | kN (fpu) | kN (Ty) | | 16 | 500/600 | 121 | 100 | | 20 | 500/600 | 188 | 157 | | 25 | 500/600 | 295 | 245 | | 28 | 500/600 | 370 | 308 | | 32 | 500/600 | 482 | 402 | | 40 | 500/600 | 756 | 630 | | 50 | 500/600 | 1176 | 980 | | 63.5 | 555/700 | 2217 | 1758 |
| | GEWI ® Plus -Steel | | Bar Diameter | Steel Grade | Ultimate Strength | Yield Strength | | mm | N/mm2 | kN (fpu) | kN (Ty) | | 18 | 670/800 | 204 | 170 | | 22 | 670/800 | 304 | 255 | | 25 | 670/800 | 393 | 329 | | 28 | 670/800 | 493 | 413 | | 30 | 670/800 | 565 | 474 | | 35 | 670/800 | 770 | 645 | | 43 | 670/800 | 1162 | 973 | | 57.5 | 670/800 | 2077 | 1740 | | 63.5 | 670/800 | 2534 | 2122 |
|
Temporary Bar Anchor
(Lifespan: up to 2 years) | | Permanent Bar Anchor
with Double Corrosion Protection
(Lifespan: up to 120 years) |
 | | 1 | - | Anchor Nut | | 2 | - | Bearing Plate | | 3 | - | Sleeved Duct
(through concrete slab) | | 4 | - | Debond Sleeve
(smooth sheathing) | | 5 | - | Heatshrink Seal | | 6 | - | Threadbar | | A | - | Free Length | | B | - | Bond Length |
|  | | 1 | - | Anchor Nut | | 2 | - | Steel Cap | | 3 | - | Bearing Plate | | 4 | - | Anti-Corrosion Compound | | 5 | - | Steel Stub Tube | | 6 | - | Threadbar | | 7 | - | Debond Sleeve
(over corrugated sheathing) | | 8 | - | Heatshrink Seal | | 9 | - | Borehole grout | | 10 | - | Factory Grout | | 11 | - | Corrugated Plastic Sheathing | | 12 | - | Grout Cap | | A | - | Free Length | | B | - | Bond Length |
|
- Lantern Spacer - plain bar (soil or rock)
- Lantern Spacer (cased boreholes, soil)
- Wrap around spacer (stable boreholes, rock)
Corrosion Protection for Permanent Bar Anchors
Permanent Anchors (lifespans in excess of 2 years) require sufficient corrosion protection to ensure durability throughout the working life of each anchor. Double Corrosion Protection, featuring factory pregrouted encapsulation of the bar within a corrugated plastic sheath, ensures comprehensive protection to all parts of the anchor. 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) . |  | Bond Length - Threadbar
- Encapsulated Grout (factory applied)
- Corrugated Sheathing
Free Length - Encapsulated Grout (factory applied)
- Corrugated Sheathing
- Debond Sleeve
|  | Coupler - Heatshrink seal (top and bottom)
- Coupler
- Collar (top and bottom)
|
