Area of Application

The ISOSTOP systems are generally characterized by a slim design. This makes transport and installation in high alpine terrain much easier. They are an effective and efficient system used to protect life, infrastructure and other elements at risk. ISOSTOP 1:1 scale tested carrying both European and Swiss certifications.

Rope Guidances

The upper and lower bearing ropes are led through a rope guidance that is 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.

Middle Rope Guidances

In the event of rockfall, the innovative middle rope system simultaneously ensures low cable forces while reducing the cost of anchoring.

Integrated Ladder

Posts from this ISOSTOP system are built from RHP profiles that provide high torsional rigidity and extremely low weight. The detachable steps are installed after transport and enable the highest level of work safety.

Base Plate

The universal base plates of the ISOSTOP systems can be used for compression-tension anchoring, as well as for placement on foundations or walls. The unique mounting bolt enables free-standing installation of the posts, which saves significant time, especially when assembling a helicopter.

Lateral Anchorage

The lateral anchoring of the ISOSTOP systems is clearly structured and can be reduced to a minimum of anchors by use of efficient brake elements. This shortens the construction time and reduces construction costs.

Flex Net

The foldable FLEXNET can be pre-assembled on the posts. The net is extremely robust and elastic thanks to the structure of individual wire rope strands. After an event, the flexible wire rope ensures that it returns to its original geometry and thus significantly reduces maintenance costs.

ISODISK Brake Element

The ISODISK is a modular disc brake system that ensures linear energy absorption through deformation and the breaking of material bridges. This means that the brake is completely insensitive to environmental and climate influences in the long term. Due to its reliability, compact design and modular structure, the brake forms the core element of all ISOSTOP Ev systems up to 3000 kJ.
Classification
ModelISOSTOP 1000 Ev
StyleHinged System
Energy Class3
Maximum Energy Level Certified/Tested [kJ]1000 / 1003
(369 / 370)
Service Energy Level Certified/Tested [kJ]330
(122)
Approved Heights - ETA [m (ft)]4.0 - 5.0
(13.1 - 16.4)
Approved Heights - FOEN [m (ft)]4.0 - 6.0
(13.1 - 19.7)
VerificationFull Scale Tested
Certification - ETAETAG27 / EAD 340059-00-0106 certified
Certification - FOENFOEN certified
Test Report Summary
Test Height [m (ft)]4.0
(13.1)
Maximum Elongation [m (ft)]7.35
(24.1)
Residual Height ClassA (≥50%)
Component FailureNone
Primary Net Opening [m (ft)]None
Secondary Mesh50/50/2.5
European Technical Assessment ETA
ETA NumberETA-22/0839
Issuing BodyTSUS Building Testing and Research Institute
Date of IssueJanuary 17, 2023
Certificate of Conformity
Report Number1301-CPR-2131
Issuing BodyTSUS Building Testing and Research Institute
Date of IssueMarch 3, 2023
Primary Net
ModelFlexnet MW 250
TypeSteel Wire Cable with Clamps
Rope Diameter [mm (inch)]8.0
(0.315)
Rope Construction6 x 7 SC
Corrosion ProtectionZn or ZnAl (Class A or B)
Mesh Size [mm (inch)]250 x 250
(9.84 x 9.84)
Unit Weight [kg/m2 (lb/ft2)]3.04
(0.622)
Mesh Tensile Strength calculated [kN/m (lbf/ft)] n/a
Connection to Main RopesThreaded
Connection to Adjacent Panel3/8" Shackle
Flexnet

The foldable FLEXNET can be pre-assembled on the posts. The net is extremely robust and elastic thanks to the structure of individual wire rope strands. After an event, the flexible wire rope ensures that it returns to its original geometry and thus significantly reduces maintenance costs.

Bearing Ropes
Quantity per fence segment2
Rope Diameter [mm (inch)]18
(0.71)
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Elements per rope4
Brake Element ModelISODISK 50-1.5
Middle Ropes
Quantity per fence segment3
Rope Diameter [mm (inch)]16
(0.63)
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Elements per rope4
Brake Element ModelISODISK 25-1.5
Retaining Ropes
Quantity per fence segment2
Rope Diameter [mm (inch)]16
(0.63)
Corrosion ProtectionZn or ZnAl (Class A or B)
Brake Elements per ropen/a
Brake Element Modeln/a
Support Structure
Post TypeRHS 160/80/4
Integrated LadderDetachable
Rope GuidesIntegrated
Post Weight as tested [kg (lbs)]75
(165)
Base Plate ConnectionTongue and Pin
Base Plate Foot Print [mm (in.)]480 x 300
(19 x 12)
Base Plate Weight [kg (lbs)]19
(42)
Anchors per base plate2 / 4
Post Base Support
1.Post; 2.Rope Guide; 3.Base Plate; 4.Hinge Pin; 5.Anchor; 6.Bolt
Retaining Rope Anchorage
1.Retaining Rope; 2.Anchor Eye; 3.Anchor
Lateral Anchorage
1.Side Stabilization Rope; 2.Upper Bearing Rope; 3.Lower Bearing Rope; 4.Middle Ropes; 5.Brake Element; 6.Anchor Eye; 7.Anchor
Anchor Forces
Base Plate Tension (Loose Ground) FLGA,ten [kN (kips)] 67
(15.1)
Base Plate Compression (Loose Ground) FLGA,pres [kN (kips)] 47
(10.6)
Base Plate Shear (Rock/Foundation) FMF,shear [kN (kips)] 26
(5.8)
Lateral Anchor A Fk,lat,A [kN (kips)] 194
(43.6)
Lateral Anchor B Fk,lat,B [kN (kips)] 148
(33.3)
Retaining Rope Anchor Fk,ret [kN (kips)] 152
(34.2)
Typical Recommended Anchors Based on Steel Grade
Anchor PositionQuantity per 50 m 10 m post spacing500/550 MPa (e.g. GEWI)670/800 MPa (e.g. GEWI Plus)min 470 MPa (e.g. IBO)
Base Plate12 / 242522n/a
Lateral2 / 42522R32-280
Typical Cross Section
1.Post; 2.Vertical Rope; 3.Rope Guide; 4.Base Plate; 5.Flexnet; 6.Retaining Rope; 7.Anchor Eye; 8.Retaining Anchor; 9.Anchor
Typical Layout
1.Post; 2.Upper Bearing Rope; 3.Lower Bearing Rope; 4.Middle Ropes; 5.Retaining Rope; 6.Side Stabilization Rope; 7. Retaining Anchor; 8.Lateral Anchor