Strand anchors

Strand anchors consist of three main components: the anchor head, a steel tendon - divided into the bond section and free length - and the grout body.

The steel tendon is constructed from a number of 7-wire prestressing strands.

 

Features:

    • Nationally approved system with internal and external quality control
    • Can be closely matched to the required loads by selecting the number of strands, strand cross-section and steel grade
    • Longer anchor lengths can be produced without joints
    • Relatively low dead weight and small diameter
    • Ease of installation thanks to high anchor flexibility
    • Efficient to transport due to low space requirement for transport and storage (anchors are supplied coiled up)

Types available:

Temporary anchors

  • Temporary anchors (service life up to 2 years)
  • Temporary anchors for extended short-term use (service life 2-7 years)
  • Temporary anchors with removable free length

Permanent anchors (service life up to 100 years)

in the steel grades (see tables for loads)

  • ST 1570/1770 0.60" (140 mm²)
  • ST 1570/1770 0.62" (150 mm²)
  • ST 1670/1860 0.60" (140 mm²)
  • ST 1670/1860 0.62" (150 mm²)

Y1770 S7 - 15,3 mm

Fpk=248 kN,  Fp0.1k=218 kN,  S0=140 mm²

number of strands

ultimate strength

yield strength 0.1%

design resistence

Fpk

Fp0.1k

R = Fp0.1k / 1.15*

[kN]

[kN]

[kN]

2

496

436

379

3

744

654

569

4

992

872

758

5

1240

1090

948

6

1488

1308

1137

7

1736

1526

1327

8

1984

1744

1517

9

2232

1962

1706

10

2480

2180

1896

11

2728

2398

2085

12

2976

2616

2275

13

3224

2834

2464

14

3472

3052

2654

15

3720

3270

2843

16

3968

3488

3033

17

4216

3706

3223

18

4464

3924

3412

19

4712

4142

3602

Y1770 S7 - 15,7 mm

Fpk=266 kN,  Fp0.1k=234 kN,  S0=150 mm²

number of strands

ultimate strength

yield strength 0.1%

design resistence

Fpk

Fp0.1k

R = Fp0.1k / 1.15*

[kN]

[kN]

[kN]

2

532

468

407

3

798

702

610

4

1064

936

814

5

1330

1170

1017

6

1596

1404

1221

7

1862

1638

1424

8

2128

1872

1628

9

2394

2106

1831

10

2660

2340

2035

11

2926

2574

2238

12

3192

2808

2442

13

3458

3042

2645

14

3724

3276

2849

15

3990

3510

3052

16

4256

3744

3256

17

4522

3978

3459

18

4788

4212

3663

19

5054

4446

3866

Y1860 S7 - 15,3mm

Fpk=260kN,  Fp0.1k=229kN,  S0=140mm²

number of strands

ultimate strength

yield strength 0.1%

design resistence

Fpk

Fp0.1k

R = Fp0.1k / 1.15*

[kN]

[kN]

[kN]

2

520

458

398

3

780

687

597

4

1040

916

797

5

1300

1145

996

6

1560

1374

1195

7

1820

1603

1394

8

2080

1832

1593

9

2340

2061

1792

10

2600

2290

1991

11

2860

2519

2190

12

3120

2748

2390

13

3380

2977

2589

14

3640

3206

2788

15

3900

3435

2987

16

4160

3664

3186

17

4420

3893

3385

18

4680

4122

3584

19

4940

4351

3783

Y1860 S7 - 15,7mm

Fpk=279kN,  Fp0.1k=246kN,  S0=150mm²

number of strands

ultimate strength

yield strength 0.1%

design resistence

Fpk

Fp0.1k

R = Fp0.1k / 1.15*

[kN]

[kN]

[kN]

2

558

492

428

3

837

738

642

4

1116

984

856

5

1395

1230

1070

6

1674

1476

1283

7

1953

1722

1497

8

2232

1968

1711

9

2511

2214

1925

10

2790

2460

2139

11

3069

2706

2353

12

3348

2952

2567

13

3627

3198

2781

14

3906

3444

2995

15

4185

3690

3209

16

4464

3936

3423

17

4743

4182

3637

18

5022

4428

3850

19

5301

4674

4064