Area of Application

The TS-HM-150-ZD is a shallow landslide barrier with a hinged connection to the base plate requiring upslope retaining ropes to support the post head. It has been 1:1 scale tested with multiple impact events.

Rope Guidances

The bearing and middle ropes are led through a rope guidance integrated on each post head and base plate. 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.

Retaining Rope Anchorage

The post head is secured using retaining ropes leading to an upslope anchor 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. One anchor is shared between two posts. For the TS-HM-150-ZD, there are no brake elements on the retaining ropes.

Lateral Anchorage

The lateral anchoring is completed with thimbles and shackles on every rope for a technically correct connection and ease of maintenance. The TS-HM-150-ZD has brake elements on the bearing ropes but none on the retaining ropes from the head of the post.

GDV Brake Element

The GDV series of brake elements are steel profiles with a roller which is pulled along its length when a force is applied, causing deformation. The gauge and length of the steel strip can be altered to control the amount of energy absorbed and the total displacement. These brakes are highly efficient and require minimal off-set from the posts.

StyleHinged System
Impact Pressure
up to 275
Available Heights
[m (ft)]
3.5 - 4.0
(11.5 - 13.1)
VerificationFull Scale Tested
Test Report Summary
Test Height
[m (ft)]
Number of Impacts
Material Stream
Energy Absorption
[kJ (ft-tons)]
> 5000
(> 1843)
Residual Height ClassA (≥50%)
Component FailureNone
Primary Net OpeningNone
Secondary MeshYes
Test Report
Report Number70 12 0165
Issuing BodyTSUS Slovakia Building, Testing and Research Institute
Date of IssueAugust 18, 2012
Primary Net
ModelOmega-Net 9.0
TypeSteel Wire Cable
Rope Diameter
[mm (inch)]
Rope Construction1 x 7 Spiral
Single Wire Diameter
[mm (inch)]
Corrosion ProtectionZn or ZnAl (Class A)
Mesh Size
[mm (inch)]
185 x 185
(7.3 x 7.3)
Unit Weight
Mesh Tensile Strength
calculated [kN/m (lbf/ft)]
Connection to Main RopesThreaded
Connection to Adjacent Panel7/16" Shackle

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
per fence segment
Rope Diameter
[mm (inch)]
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Element
per rope
Brake Element ModelGDVI 45-12-130, 120x8-1500
Middle Ropes
per fence segment
Rope Diameter
[mm (inch)]
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Element
per rope
Brake Element ModelGDVI 45-12-130, 120x8-3000
Retaining Ropes
per fence segment
Rope Diameter
[mm (inch)]
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Element
per rope
Brake Element Modeln/a
Post Base Support
Retaining Rope Anchorage
Lateral Anchorage
Anchor Forces
Base Plate
Fk,par [kN (kips)]
Lateral Anchor
Fk,lat [kN (kips)]
Retaining Rope Anchor
Fk,ret [kN (kips)]
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 Plate122522site dependent
Typical Cross Section
Typical Layout
Pre-test Photo, Front
Post-test Photo, Front