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SW-Smart Anchor

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Removable,
tension and load
Distributive type Anchor
(SW-SMART Anchor) The SW-SMART anchor is a load distributive tension type removable anchor designed to uniformly transfer skin friction to the grout body and soil throughout the entire bond length rather than applying a concentrated force at the distal end of the anchor body. This anchor has been developed for the purpose of securing anchorage force in relatively weak soils of approx. N 10. Removal of the SW-SMART anchor is performed similar to that of the SW-RCD anchor.
SW-SMART Anchor Features
1 The load distributive design allows the anchoring force to be secured in soils with low confining pressure (approx. N 10).
2 Minimize working space required for removal of steel strand. • Strand is easily removed which minimizes removal cost.
3 Materials for bond and free length can be freely selected. (Ex.: Free length - steel strand, Bond length - steel bar)
4 Anchoring force can be secured even when compressive strength of grout body is lower than that of compression type anchor.
5 The target anchoring force can be easily secured in soils with low confining pressure due to the lower eccentric design.
6 When applied to weak ground, workability, convenience and economic efficiency are outstanding compare to those of other techniques.
Design/Specifications Table 1. SW-SMART Anchor Specification (12.7mm) (KS D 7002)

[KS D 7002]

No. of Steel strand (φ = 12.70mm) Ultimate Strength
(kN)		 Yield Strength
(kN)		 Allowable Design
Load (Ta) (kN)		 Remarks
3 549 468 275 * Ultimate Strength (Breaking Load) (Tu)
= 183.0KN (1 strand)
* Yieid Strength (Load at 1% Elongation) (Ty)
= 156.0kN (1 strand)

* Allowable Design Load (Ta) = 0.5 Tu
* Allowable Lock-off Load = 1.1 Ta
* Stressing Load = 0.8 Tu

Reference BS-8081:2015
4 732 624 366
5 915 780 458
6 1,098 936 549
7 1,281 1,092 641
Table 2. SW-SMART Anchor Specification (15.24mm) (ASTM A416 270 Grade, Low Relaxation)

[ASTM A416]

No. of Steel strand (φ = 15.24mm) Ultimate Strength
(kN)		 Yield Strenght
(kN)		 Allowable Design
Load (Ta) (kN)		 Remarks
3 782 704 391 * Ultimate Strength (Breaking Load) (Tu)
= 260.7KN (1 strand)
* Yieid Strength (Load at 1% Elongation) (Ty)
= 234.6kN (1 strand)

* Allowable Design Load (Ta) = 0.5 Tu
* Allowable Lock-off Load = 1.1 Ta
* Stressing Load = 0.8 Tu

Reference BS-8081:2015
4 1,043 938 521
5 1,304 1,173 652
6 1,564 1,408 782
7 1,825 1,642 912

Available strand standard
-15.2mm (AS/NZ 4672) / 15.2mm (KS D 7002) / 12.7mm (KS D 7002)