Area of Application

The TSC-3000-ZD is a high energy rockfall catchment fence that has a hinged connection to the base plate and so requires upslope retaining ropes to support the post head. It has been tested according to the ETAG 27 guidelines and carries a CE marking. 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 base plate. A similar guidance is used for the middle ropes. Each guidance provides large curved surfaces to help protect the ropes and allow unobstructed movement. 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

Hinged systems have independent base plates that are connected to the post using a pin. The lower bearing rope is led through a guidance attached to the base plate similar to that of the head of the post. The base of the post is secured to the foundation/subsurface through two rock or soil anchors, the front compression anchor oriented perpendicular to slope while the rear tension anchor is at 45 degrees to the base plate.

Lateral Anchorage

The lateral anchoring is completed with thimbles and shackles on every rope for a technically correct connection and ease of maintenance. The TSC-3000-ZD has brake elements on the main bearing ropes as well as the middle ropes. Brake elements on the middle ropes allow for more elongation than the upper and lower brakes to maximize energy absorption while maintaining a large residual height.

Retaining Rope Anchorage

The post head is secured using retaining ropes that lead to independent upslope anchors in the middle of the field on either side of the post. This gives side-to-side stability of the post as well as the ability to lead forces into the ground. For the TSC-3000-ZD, each rope is fitted with a brake element to help absorb energy and reduce the forces on the anchors.

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
ModelTSC-3000-ZD
StyleHinged System
Energy Class6
Maximum Energy Level
Certified/Tested [kJ (ft?tons)]
3000 / 3326
(1106 / 1226)
Service Energy Level
Certified/Tested [kJ (ft?tons)]
1000
(369)
Approved Heights
[m (ft)]
5.0 - 6.0
(16.4 - 19.7)
VerificationFull Scale Tested
CertificationETAG 27 Certified
Test Report Summary
Test Height
[m (ft)]
5.0
(16.4)
Maximum Elongation
[m (ft)]
7.22
(23.69)
Residual Height ClassA (≥50%)
Component FailureNone
Primary Net OpeningNone
Secondary MeshNone
European Technical Assessment
ETA
ETA-NumberETA-11/0227
Issuing BodyOIB Austrian Institute of Construction Engineering
Date of IssueOctober 24, 2011
Certificate of Conformity
Certificate Number1159-CPD-0311/12
Issuing BodyBauCert Steiermark
Date of IssueMarch 6, 2012
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)]
6.8
(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 60/30-3.5
Middle Ropes
Quantity
per fence segment
4
Rope Diameter
[mm (inch)]
24
(0.945)
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Element
per rope
4
Brake Element ModelAVT phx 60/30-4.5
Retaining 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
1
Brake Element ModelAVT phx 60/30-2.5

Support Structure
Post TypeHEA 300
Integrated LadderRungs every 0.5 m (19")
Rope GuidesIntegrated
Post Weight
as tested ([kg (lbs)]
580
(1278)
Base Plate ConnectionTongue and Pin
Base Plate Foot Print
([mm (in.)]
790 x 350
(31 x 14)
Base Plate Weight
[kg (lbs)]
75
(165)
Anchors
per base plate
2
Post Base Support
Retaining Rope Anchorage
Lateral Anchorage
Anchor Forces
Base Plate
Fk,par [kN (kips)]
302
(68)
Lateral Anchor
Fk,lat [kN (kips)]
229
(52)
Retaining Rope Anchor
Fk,ret [kN (kips)]
296
(67)
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 Plate124035site dependent
Lateral62825R32-400
Upslope124035R51-660
Typical Cross Section
Typical Layout
MEL Pre-test Photo, Side
MEL Post-test Photo, Side
MEL Pre-test Photo, Front
MEL Post-test Photo, Front
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