Area of Application

The TS-100-oA is a low energy rockfall catchment fence that utilizes a fixed-post and thus requires no upslope retaining ropes. It has been 1:1 scale tested according to the Austrian WLV guidelines. It fully meets the requirements for Consequence Class 3 of Appendix E of the ONR 24810 “Technical protection against rockfall – Terms and definitions, actions, design and construction, and monitoring and maintenance” and carries the highest performance rating available according to the Austrian Department of Avalanche and Torrent Control’s rockfall catchment fence type list. As such, it may be used on projects with all levels of risk.

Rope Guidances

The upper and lower bearing ropes are led through a shackle attached to the post head and base plate. This allows for simple maintenance and installation.

Integrated Ladder

Each post has an integrated ladder composed of rungs spaced at 50 cm intervals in the webbing of the I-beam. The ladder assists in the installation of the fence as well as routine inspection and maintenance.

Base Plate

As with all fixed-rotation systems, the base plate is integrated into the post. The lower bearing rope is guided through a shackle attached to the post beam via a tab. The base of the post is secured to the foundation/subsurface through three bolts or rock anchors.

Lateral Anchorage

Lateral anchoring or internal anchoring of long sections of fences are achieved normally with one anchor having the main bearing ropes attached with thimbles and shackles. The system has no brake elements.
StyleFixed Rotation
Energy Class0
Maximum Energy Level
Certified/Tested [kJ (ft?tons)]
100 / 123
(37 / 45)
Service Energy Level
Certified/Tested [kJ (ft?tons)]
Approved Heights
[m (ft)]
2.0 - 3.0
(6.6 - 9.8)
VerificationFull Scale Tested
CertificationAccording to WLV Guideline
Test Report Summary
Test Height
[m (ft)]
Maximum Elongation
[m (ft)]
Residual Height ClassA (≥50%)
Component FailureNone
Primary Net OpeningNone
Secondary MeshNone
Test Report
Report Number0103
Issuing BodyMontanuniversität Leoben
Date of IssueJuly 23, 2003
Primary Net
ModelHPN 50 x 50
TypeRectangular Netting
Wire Diameter
[mm (inch)]
ConstructionSingle Twist
Corrosion ProtectionZnAl (Class A)
Mesh Size
[mm (inch)]
50 x 50
(1.97 x 1.97)
Unit Weight
Mesh Tensile Strength
calculated [kN/m (lbf/ft)]
Connection to Main RopesSewing Rope
Connection to Adjacent PanelOriginal Wire
High Performance Netting

The primary net material used in this system is called the High Performance Netting. It is a high tensile strength mesh suitable for low energy dynamic impacts which helps limit the elongation of the system. The small mesh opening is also ideal for sites with high frequency events of small debris. It is the same mesh used for slope retention systems.

Bearing Ropes
per fence segment
Rope Diameter
[mm (inch)]
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Element
per rope
Brake Element Modeln/a
Middle Ropes
per fence segment
Rope Diameter
[mm (inch)]
Corrosion Protectionn/a
Brake Element
per rope
Brake Element Modeln/a
Retaining Ropes
per post
Rope Diameter
[mm (inch)]
Corrosion Protectionn/a
Brake Element
per rope
Brake Element Modeln/a
Support Structure
Post TypeHEA 140
Integrated LadderRungs every 0.5 m (19")
Rope Guides5/8" Shackle
Post Weight
as tested ([kg (lbs)]
Base Plate ConnectionFixed
Base Plate Foot Print
([mm (in.)]
644 x 300
(25.4 x 11.8)
Base Plate Weight
[kg (lbs)]
per base plate
Post Base Support
1.Post; 2.Rope Guide; 3.Base Plate; 4.Anchor Nut; 5.Washer; 6.Anchor; 7.Foundation
Base Plate Anchor Layout
Lateral Anchorage
1.Side Stabilization Rope; 2.Upper Bearing Rope; 3.Lower Bearing Rope; 4.Anchor Eye; 5.Anchor
Anchor Forces
Lateral Anchor
Fk,lat [kN (kips)]
Slope Parallel Force
H at base plate [kN (kips)]
Tension Force
per tension anchor at base plate, Fk,ten [kN (kips)]
Bending Moment
at foot of post as tested, MFOK [kNm (ton?ft)]
Typical Recommended Anchors Based on Steel Grade
Anchor PositionQuantity
per 50 m
10 m post spacing
500/550 MPa
(e.g. GEWI)
670/800 MPa
(e.g. GEWI Plus)
min 470 MPa
(e.g. IBO)
Base Plate183225n/a
Typical Cross Section
1.Side Stabilization Rope; 2.Upper Bearing Rope; 3.Lower Bearing Rope; 4.Anchor Eye; 5.Anchor
Typical Layout
1.Post; 2.Upper Bearing Rope; 3.Lower Bearing Rope; 4.Side Stabilization Rope; 5.Lateral Anchor