Area of Application

The TS-2000-oA is a medium 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 rope guidance that is integrated on each post head and foot. Middle ropes are led through a large diameter half-ring welded to the beam. The guidance is designed to be robust and with no movable parts in order to ensure longevity and zero maintenance.

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 led through a guidance attached to the base plate having a curved surface, both horizontally and vertically, to assist deflection of the rope. 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 (as shown here) are achieved normally with two anchors having a main bearing rope and one middle rope attached with brakes, thimbles and shackles. Small extension ropes are used to separate brake elements in order to ensure proper functionality.

AVT-phx Brake Element

The AVT-phx series of brake elements are steel coils that unravel when a force is applied. The gauge, width and number of coils can be specified in order to control the amount of energy absorbed and the total displacement. With no moving parts, these are some of the safest and most reliable brakes in the industry.

Classification
ModelTS-2000-oA
StyleFixed Rotation
Energy Class5
Maximum Energy Level
Certified/Tested [kJ (ft∙tons)]
2000 / 2290
(737 / 844)
Service Energy Level
Certified/Tested [kJ (ft∙tons)]
n/a
Approved Heights
[m (ft)]
4.0 - 6.0
(13.1 - 19.7)
VerificationFull Scale Tested
CertificationAccording to WLV Guideline
Test Report Summary
Test Height
[m (ft)]
4.0
(13.1)
Maximum Elongation
[m (ft)]
7.10
(23.3)
Residual Height ClassA (≥50%)
Component FailureNone
Primary Net OpeningNone
Secondary MeshNone
Test Report
Report Number0208
Issuing BodyMontanuniversität Leoben
Date of IssueJuly 17, 2008
Primary Net
ModelOmega-Net 9.0/185
TypeSteel Wire Cable
Rope Diameter
[mm (inch)]
9.0
(0.354)
Rope Construction1 x 7 Spiral
Single Wire Diameter
[mm (inch)]
3.0
(0.118)
Corrosion ProtectionZn or ZnAl (Class A)
Mesh Size
[mm (inch)]
185 x 185
(7.3 x 7.3)
Unit Weight
[kg/m2(lb/ft2)]
8.6
(1.39)
Mesh Tensile Strength
calculated [kN/m (lbf/ft)]
465
(31,862)
Connection to Main RopesThreaded
Connection to Adjacent Panel7/16" Shackle
Omega-Net

The primary net material used in Trumer systems is called the Omega-Net. It is a steel cable net made from spiral rope that has thick individual wires to resist abrasion. The strands of rope are pre-bent into arcs resembling an omega shape and then woven together to make the net. This process yields an extremely strong net with high flexibility and energy absorption characteristics.

Bearing Ropes
Quantity
per fence segment
2
Rope Diameter
[mm (inch)]
24
(0.945)
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Element
per rope
2
Brake Element ModelAVT phx 80/30-3.5
Middle Ropes
Quantity
per fence segment
2
Rope Diameter
[mm (inch)]
24
(0.945)
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Element
per rope
2
Brake Element ModelAVT phx 60/30-4.5
Retaining Ropes
Quantity
per fence segment
n/a
Rope Diameter
[mm (inch)]
n/a
Corrosion Protectionn/a
Brake Element
per rope
n/a
Brake Element Modeln/a
Support Structure
Post TypeHEB 280
Integrated LadderRungs every 0.5 m (19")
Rope GuidesIntegrated
Post Weight
as tested ([kg (lbs)]
761
(1677)
Base Plate ConnectionFixed
Base Plate Foot Print
([mm (in.)]
1155 x 345
(46 x 14)
Base Plate Weight
[kg (lbs)]
n/a
Anchors
per base plate
3
Post Base Support
Base Plate Anchor Layout
Lateral Anchorage
Anchor Forces
Lateral Anchor
Fk,lat [kN (kips)]
324
(73)
Slope Parallel Force
H at base plate [kN (kips)]
505
(114)
Tension Force
per tension anchor at base plate, Fk,ten [kN (kips)]
n/a
Bending Moment
at foot of post as tested, MFOK [kNm (ton∙ft)]
773
(285)
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 Plate185043n/a
Lateral44035R51-660
Typical Cross Section
Typical Layout