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High-Energy Rockfall Barriers

High-energy rockfall barriers are flexible ring-net catch systems rated above 3,000 kJ for sites where large blocks, tall fall heights, or long-runout slopes drive impact energies beyond the capacity of standard barriers. These kits use heavier posts, longer brake-element strokes, and engineered foundations to dissipate impacts up to 10,000 kJ.

3,000-10,000 kJ

High-Energy Range

Up to 25 ft

Barrier Height

EAD 340059

Class 7-8 Certified

2-3+ m

Brake-Element Stroke

Overview

Understanding High-Energy Barriers

High-energy barriers are the upper end of the flexible rockfall barrier family, rated for impact energies above the roughly 3,000 kJ ceiling of standard rockfall barriers. They share the same kit architecture, hinged steel posts, support cables, brake elements, and an interlocking ring net, but every component is sized up: heavier post sections, longer brake-element strokes that absorb more energy through controlled deformation, larger ring nets formed from thicker wire, and foundations engineered for the higher dynamic loads that come with class 7 and class 8 impacts.

The high-energy class is specified when rockfall trajectory modeling produces a design impact energy in the 4,500 to 10,000 kJ band, typically driven by large blocks, tall fall heights above 200 feet, or long-runout slopes where bounce velocities accumulate. On sites where even a Class 8 barrier is undersized for the modeled toe energy, a mid-slope attenuator can be paired with a downstream barrier to stage the energy reduction. High-energy barriers also coordinate upslope with draped mesh and at the source with rock scaling as part of an integrated mesh and barrier system.

What Is a High-Energy Rockfall Barrier?

A high-energy rockfall barrier is a flexible catch system certified to absorb impact energies above 3,000 kJ, occupying the top end of the European Assessment Document EAD 340059-00-0106 (formerly ETAG 027) energy-class framework. The framework defines nine classes from 0 to 8 based on Maximum Energy Level (MEL) at full-scale vertical-drop impact test. Class 7 systems are rated to 4,500 kJ MEL, and Class 8 systems are rated to 8,000 kJ MEL or greater, with leading manufacturers (Geobrugg, Maccaferri, Trumer) producing certified kits up to 10,000 kJ.

The kit is recognizable as the same family as a standard rockfall barrier: hinged steel posts on rock-anchored or concrete foundations, upslope and lateral support cables, brake elements that extend in tension under impact, and an interception net spanning the post array. What makes it high-energy is the scale of every component. Posts are heavier W-section or built-up sections instead of standard rolled sections. Brake-element strokes extend 2 to 3 meters or more under MEL impact, against 0.5 to 2 meters for standard barriers. Ring nets use 4 mm or thicker wire in 300 to 350 mm rings rather than the lighter ring sizes used in lower classes. Foundations are paired anchors, deeper micropiles, or larger reinforced concrete footings sized for the higher dynamic shear and pullout loads.

Key Benefits

Stops large blocks and high-velocity impacts that exceed standard barrier capacity
Brake-element design absorbs energy progressively, holding peak load below component capacity
Reusable after impact with brake replacement and damaged-panel swap
Class 7-8 certified to EAD 340059 with full-scale impact-tested performance
Foundations and posts remain in service across multiple SEL events

Used In Our Services

Drilling

Mesh & Barrier Systems

Rock Scaling

Rope Access

The Engineering

How High-Energy Barriers Absorb Class 7-8 Impacts

How the system carries load in service, and how we build it on site.

High-energy barrier design starts with the same trajectory modeling as any rockfall barrier, but the inputs that drive a high-energy specification are distinctive: design block masses in the 1 to 5+ tonne range, fall heights typically above 200 feet, and slopes long enough that bounce velocities approach terminal. The modeled MEL at the proposed catch line is matched against the EAD 340059 class table, and any modeled energy above 3,000 kJ moves the design out of the standard class range and into Class 7 (4,500 kJ) or Class 8 (8,000 to 10,000+ kJ). Selection includes a safety factor against the modeled MEL, typically requiring kit capacity 1.2 to 1.5 times the predicted impact.

On the ground, the energy path through the kit is the same as a standard barrier but the strokes and loads are larger. The block engages the ring net, the net deflects inward, and the deflection pulls tension into upslope and lateral support cables. The brake elements extend through controlled deformation across the longer 2 to 3+ meter stroke required to absorb a Class 7-8 impact, holding peak load on every component below its capacity. The residual force transfers through the cables and post bases into engineered foundations, typically rock-anchored base plates with paired grouted bar or strand anchors on competent rock, micropiles socketed into competent ground in weathered or weaker substrate, or reinforced concrete footings with deeper embedment than a standard barrier requires. The brake stroke and foundation sizing are the two design choices that most distinguish a high-energy barrier from a standard one.

Trajectory Analysis and Class Selection

Rockfall modeling sets design block size, MEL at the catch line, and the EAD 340059 energy class. Output drives kit selection, post height, and barrier alignment.

Foundation Engineering

Paired rock anchors, micropile clusters, or reinforced concrete footings sized for Class 7-8 dynamic loads, with embedment and capacity verified by site geotechnical investigation.

Post Erection

Heavy hinged steel posts (W-section or built-up) mounted on shear-pin or articulated base plates per kit specification. Post sections and base plates are sized up from standard barrier components.

Cable and Brake Element Installation

Upslope and lateral support cables tensioned to ground anchors, brake elements with 2 to 3+ meter stroke installed in line and pre-loaded per certification.

Ring Net Installation

Class 7-8 ring net (300 to 350 mm rings, 3 to 4 mm wire) mounted across the post array, panels seamed and tensioned per kit certification.

System Variants

High-Energy Barrier Configurations

Type 01

Class 7 Ring-Net Barriers (4,500 kJ)

Class 7 is the entry point to the high-energy range under EAD 340059, with full-scale impact tested MEL at 4,500 kJ and Service Energy Level (SEL) at 1,500 kJ. Typical Class 7 kits use 6 to 8 inch hinged steel posts at 30 to 40 foot spacing on rock-anchored or micropile foundations, with brake-element stroke around 2 meters and ring nets formed from 3 to 4 mm wire in 300 mm rings. Class 7 systems are specified for highway and rail corridors where modeled impact energies fall in the 3,000 to 4,500 kJ band, typically driven by 1 to 2 tonne block sizes or fall heights in the 200 to 300 foot range. The cost premium over a standard 3,000 kJ Class 6 barrier is meaningful but moderate, and the foundation requirements remain within the range of single-anchor base plates on competent rock.

Type 02

Class 8 Ring-Net Barriers (8,000 to 10,000+ kJ)

Class 8 is the highest energy class under the EAD 340059 framework, with MEL ≥ 8,000 kJ. Leading manufacturers extend Class 8 with certified kits at 10,000 kJ MEL, the practical ceiling for a single-line flexible barrier. Class 8 kits use the heaviest post sections (W-section or built-up sections), brake-element strokes that extend 2.5 to 3+ meters under full MEL impact, and ring nets with 4 mm or thicker wire in 300 to 350 mm rings. Foundations typically require paired rock anchors at each post base, micropile clusters in weaker ground, or reinforced concrete footings with substantial embedment. Class 8 is specified for slopes with 2 to 5+ tonne design block sizes, fall heights above 300 feet, or long-runout sites where the modeled toe energy exceeds 5,000 kJ. The per-foot installed cost is meaningfully above Class 7 and well above standard barriers, and design-build coordination on foundations is the dominant schedule risk.

Type 03

Staged Attenuator-and-Barrier Systems

On extreme sites where modeled toe impact energy exceeds even a Class 8 single-line barrier (above roughly 10,000 kJ), the design moves to staged interception. A mid-slope attenuator is positioned partway down the slope to intercept blocks before they reach terminal velocity, dropping the energy a downstream barrier must absorb by roughly 50 to 70 percent. A Class 6 or Class 7 barrier at the toe then handles the reduced impact within its rated capacity. Staging is also used where a single very-high-class barrier is impractical for non-energy reasons: site access constraints that prevent the heavy foundations a Class 8 kit requires, retrofit projects where existing barrier infrastructure can be supplemented rather than replaced, or budget envelopes where two lower-class kits cost less than one Class 8 kit. The trade-off is double the inspection and post-event maintenance scope.

Side By Side

High-Energy Barrier vs Other Approaches

High-Energy Barrier vs Standard Rockfall Barrier

Both share the same kit architecture: hinged posts, support cables, brake elements, and ring or cable net. The split is energy class. Standard rockfall barriers cover EAD 340059 classes 0 through 6, roughly 100 to 3,000 kJ MEL, which handles the dominant volume of US highway, rail, and mining catch-fence work. High-energy barriers cover Class 7 (4,500 kJ) and Class 8 (8,000 to 10,000+ kJ), and are specified only where rockfall modeling produces design energies above the 3,000 kJ threshold. The components scale up: post sections, brake-element strokes, ring-net wire diameter, and foundation capacity all increase to handle the larger dynamic loads. Per-foot installed cost is meaningfully higher, and foundation engineering is the dominant cost driver on Class 8 work where paired anchors or micropiles replace single-anchor base plates.

High-Energy Single Barrier vs Staged Attenuator-Plus-Barrier

The choice is energy strategy. A single Class 7 or Class 8 barrier at the toe absorbs the full impact energy at one catch line, and is the right answer when site geometry allows a single foundation line, when the toe area can accept the heavier kit and its foundation work, and when the modeled MEL stays within the 10,000 kJ ceiling of Class 8 certification. A staged attenuator upslope plus a lower-class barrier at the toe spreads energy absorption across two systems, which becomes the right answer on extreme-energy sites that exceed Class 8, on tall slopes where mid-slope anchor access is available and toe foundation work is constrained, or where a lower-class barrier replacement of an existing under-capacity kit can be supplemented by an attenuator rather than fully replaced. Staging adds a second inspection and post-event maintenance scope but unlocks protection envelopes that no single-line system can reach.

Ring-Net vs Cable-Net at High Energy

Within the flexible barrier family, the interception element matters more at high energy than at moderate energy. Ring-net systems use interlocking steel rings (typically 300 to 350 mm diameter, 3 to 4 mm wire) that deform progressively under impact, dissipating energy across many small deformation events rather than at single failure points. The progressive ring deformation is what enables the Class 7 and Class 8 ratings; ring nets are the only practical interception element at the top of the energy class table. Cable-net and wire-rope interception elements are the workhorse below 1,500 kJ but reach a practical performance ceiling around 2,000 to 3,000 kJ where the discrete connection points (ferrules, shackles, cable crossings) become the limiting failure mode under sustained impact load. For any modeled energy above 3,000 kJ, the design defaults to a ring-net configuration.

Not sure which system fits? We'll walk through the tradeoffs for your site conditions.

Talk Through Your Options

Where It Fits

Where High-Energy Barriers Are Used

High-energy barriers are specified on the subset of slopes where standard barrier capacity is exceeded. Mountain highway and interstate corridors with tall rock cuts above the travel lane are the dominant application, particularly where state DOT rockfall hazard ratings (FHWA-OR-EG-90-01 RHRS) flag the slope for catastrophic failure consequence and the modeled impact energy at the planned catch line exceeds 3,000 kJ. Freight and passenger rail corridors in canyons and steep cuts use Class 7-8 systems to protect track from large-block detachments where derailment consequence justifies the higher kit cost. Mining highwall and bench-face protection in operations with 2+ tonne block sizes uses high-energy ring-net systems to protect haul roads, processing infrastructure, and personnel routes. Hydroelectric and dam-spillway approaches, ski-resort terrain on steep mountain faces, and below-cliff infrastructure for utilities and communications also drive Class 7-8 specifications when rockfall trajectory modeling produces high design energies. Post-event emergency installs are a recurring fourth application, where a documented large-block event has revised the design block size upward and existing standard barrier capacity is inadequate for the updated hazard.

Mountain highway and interstate rock cuts with high RHRS scores

Rail corridors in canyons with large-block detachment potential

Mining highwalls and bench faces with 2+ tonne design blocks

Hydroelectric and dam-spillway approaches

Ski-resort terrain on steep mountain faces

Below-cliff utility and communications infrastructure

Post-event emergency installs after revised design block size

Benefits

Key Advantages

Class 7-8 Energy Capacity

Ring nets and brake elements absorb impact energies from 3,000 kJ through 10,000 kJ MEL, the upper end of the EAD 340059 certification framework, addressing slopes that exceed standard barrier capacity.

Full-Scale Tested Performance

EAD 340059 (formerly ETAG 027) certification verifies kit performance through full-scale vertical-drop impact testing at SEL and MEL thresholds, providing documented capacity for design engineers and owners.

Progressive Energy Dissipation

Net deformation, ring deformation, and brake-element extension absorb energy progressively across a 2 to 3+ meter stroke, preventing catastrophic failure under extreme loads.

Serviceable After Impact

Brake elements and damaged net panels can be replaced after a hit while posts and foundations remain in service. Most kits return to service within days of a single MEL impact.

Engineered Foundations

Paired anchors, micropile clusters, and reinforced concrete footings handle the dynamic loads from Class 7-8 impacts, sized to site geotechnical conditions and the kit MEL.

Engineering

Technical Considerations

Soil/Rock Conditions

Class 7-8 foundations resist substantially higher dynamic loads than standard barriers. Paired rock anchors are typical on competent rock outcrops, micropile clusters extend into competent ground in weathered substrate, and reinforced concrete footings are used where soil cover is deep. Site geotechnical investigation is required to size embedment and capacity.

Groundwater

Barriers themselves are permeable. Foundation drainage may be required for stability in wet conditions, particularly on micropile clusters in weaker ground where pore pressure can affect pullout capacity.

Load Capacity

Energy class is set by rockfall trajectory modeling that produces a design MEL at the catch line. Selection includes a safety factor (typically 1.2-1.5) against the modeled MEL, and foundation capacity is sized to the kit static and dynamic load ratings.

Spacing

Post spacing per manufacturer specifications for the certified energy class. Closer spacing increases capacity in some kit families. Spacing on Class 8 systems is typically tighter than Class 7 due to the higher per-post load share.

Installation Method

Foundations installed first with engineered embedment, posts erected and base plates torqued, brake elements installed and pre-loaded on the support cables, then ring net mounted and tensioned per certification requirements.

Equipment Used

Drill rigs for paired-anchor or micropile foundations
Concrete mixing and placement equipment
Crane for heavy post and net erection
Rope-access crews for steep terrain
Tensioning equipment for cables and net panels

Limitations

Per-foot installed cost meaningfully above standard barriers
Foundation engineering is the dominant cost and schedule driver
Requires manufacturer-trained installation per kit certification
Class 8 kits have a 10,000 kJ practical ceiling; sites above this require staged attenuator-plus-barrier
Heavier components require crane access at the post line

Technical Specifications

Energy Capacity (MEL)

3,000 kJ to 10,000+ kJ

EAD 340059 Class

Class 7-8

Barrier Height

10-25 ft

Post Spacing

30-50 ft

Brake Stroke

2 to 3+ meters under MEL

Net Type

Ring net (300-350 mm rings, 3-4 mm wire)

Codes And References

Engineering Standards and References

EOTA

EAD 340059-00-0106

Falling Rock Protection Kits

The European Assessment Document (formerly ETAG 027, 2008) governs full-scale vertical-drop impact testing and energy-class certification for flexible rockfall barriers. Class 7 is rated to 4,500 kJ MEL with 1,500 kJ SEL, and Class 8 is rated to 8,000 kJ MEL or greater. Most US state DOT specifications require EAD 340059 certification for permanent high-energy barrier installations.

FHWA

FHWA-OR-EG-90-01

Rockfall Hazard Rating System

Pierson, Davis, and Van Vickle (1990) established the 12-category scoring framework that state DOTs use to prioritize rockfall mitigation. RHRS scoring identifies the slopes where high-consequence failure justifies the cost premium of a Class 7 or Class 8 barrier, and is the upstream tool that drives where high-energy systems are designed and installed.

TRB

Rockfall: Characterization and Control

Turner & Schuster (eds.), 2012

The Transportation Research Board practitioner reference covering source-area mitigation, trajectory modeling, barrier and attenuator selection, and post-event response. The chapters on flexible barrier sizing and staged attenuator-plus-barrier systems are the comprehensive US synthesis on high-energy rockfall protection design.

Authoritative Sources

EOTA Construction Assessment FHWA Geotechnical Engineering

Combinations

Integration With Other Systems

Rockfall Barriers

High-energy barriers are the Class 7-8 extension of the standard rockfall barrier family, sharing kit architecture but sized for impact energies above 3,000 kJ.

Learn More

Mid-Slope Attenuators

Attenuators reduce rock energy before barrier impact on tall slopes, allowing a lower-class downstream barrier or extending protection beyond the Class 8 ceiling on extreme sites.

Learn More

Rock Scaling

Scaling at the source removes loose blocks before they release, reducing demand on the barrier system and lowering the design block size used in trajectory modeling.

Learn More

Draped Mesh Systems

Upper slope mesh guides smaller debris to the catchment area while the high-energy barrier handles large-block impacts at the toe.

Learn More

Gallery

Our Work in Action

Expertise

Why Choose Rock Supremacy for High-Energy Barriers

Trajectory Modeling Support

We model rockfall energy and trajectory to specify the right EAD 340059 energy class for the slope, avoiding both under-design and unnecessary over-spec on Class 7-8 work where the cost premium is meaningful.

Certified Kit Installation

Crews trained on Geobrugg, Maccaferri, and Trumer high-energy kit assemblies per manufacturer requirements, installing to the Class 7 or Class 8 energy rating on the project specification.

Integrated Anchoring and Foundations

We drill and install paired rock anchors, micropile clusters, and reinforced concrete footings with our own crews. Class 7-8 foundation work is not waiting on a subcontractor.

Difficult-Access Installation

Rope-access crews install posts, cables, and net panels on slopes and cliffs where mechanized equipment cannot reach the post line, with helicopter material support on remote sites.

Emergency Mobilization

Rapid mobilization for post-event high-energy barrier installs after large-block events that exceed existing standard barrier capacity, with temporary catch fence available before permanent kits are designed.

Case Studies

Our Work

See how we've applied this technique and others to solve real-world geotechnical challenges.

Transportation

Glenwood Canyon, CO|2023

I-70 Corridor Stabilization

Installed 50,000 sq ft of high-tensile mesh and performed extensive scaling after a major weather event.

View Case Study

Transportation

Stanley, ID|2023

Ketchum-Challis Highway Scaling

Large-scale rock scaling and mesh installation along 3 miles of Highway 75 through the Sawtooth Mountains.

View Case Study

Civil

Lava Hot Springs, ID|2024

Lava Hot Springs Slope Stabilization

Multi-phase slope stabilization project protecting the historic hot springs resort and Highway 30 from an active landslide.

View Case Study

View All Work

Questions

High-Energy Rockfall Barriers FAQ

What is a high-energy rockfall barrier?

A high-energy rockfall barrier is a flexible catch system rated above 3,000 kJ Maximum Energy Level (MEL), occupying Class 7 (4,500 kJ MEL) and Class 8 (8,000 kJ MEL or greater, with certified kits up to 10,000 kJ) of the EAD 340059-00-0106 framework. It shares the same kit architecture as a standard rockfall barrier (hinged posts, support cables, brake elements, interception net) but every component is sized up: heavier posts, longer brake-element strokes (2 to 3+ meters), thicker-wire ring nets, and engineered foundations sized for the higher dynamic loads from Class 7-8 impacts.

What is the difference between a high-energy and a standard rockfall barrier?

The split is energy class. Standard rockfall barriers cover EAD 340059 classes 0 through 6, roughly 100 to 3,000 kJ MEL, which handles the dominant volume of US highway, rail, and mining catch-fence work. High-energy barriers cover Class 7 (4,500 kJ) and Class 8 (8,000 to 10,000+ kJ), specified where rockfall modeling produces design energies above 3,000 kJ. Both share kit architecture, but high-energy kits use heavier post sections, longer brake-element strokes, thicker-wire ring nets, and paired-anchor or micropile foundations. Per-foot installed cost is meaningfully higher, with foundation engineering the dominant cost driver on Class 8 work.

When do I need a 5,000+ kJ barrier?

A Class 7-8 specification is driven by rockfall trajectory modeling. The inputs that push the modeled MEL above 3,000 kJ are large design block sizes (typically 1 to 5+ tonnes), tall fall heights (above 200 feet), and long-runout slopes where bounce velocities approach terminal. State DOT rockfall hazard ratings (FHWA-OR-EG-90-01 RHRS) identify the slopes where high-consequence failure justifies the cost premium of a Class 7 or Class 8 barrier. The barrier capacity is selected with a safety factor of 1.2 to 1.5 against the modeled MEL, so a site with a modeled 5,000 kJ MEL typically receives a Class 8 (8,000 kJ rated) kit.

What is EAD 340059 / ETAG 027?

ETAG 027 was the European Technical Approval Guideline for Falling Rock Protection Kits issued by the European Organisation for Technical Approvals in 2008. It was converted under the Construction Products Regulation to European Assessment Document EAD 340059-00-0106, which now controls certification for flexible rockfall barriers. The standard requires full-scale vertical-drop impact testing against two thresholds: the Service Energy Level (SEL, one-third of rated capacity, two consecutive hits with no functional damage) and the Maximum Energy Level (MEL, rated capacity, single impact, full retention). Most US state DOT specifications require EAD 340059 certification for permanent high-energy barrier installations.

What happens when a large rock hits a high-energy barrier?

The barrier absorbs impact energy through controlled deformation rather than rigid resistance. The block engages the ring net, the net deflects inward and pulls tension into upslope and lateral support cables, the brake elements extend through controlled deformation across a 2 to 3+ meter stroke, and the residual force transfers cleanly into the foundations. The deformation absorbs energy progressively, holding peak load on every component below its capacity. After a single MEL impact, the kit is reset by replacing deformed brake elements and any damaged net panels while the posts and foundations remain in service. Through repeated SEL hits the kit functions without component replacement.

When is a single high-energy barrier better than a staged attenuator and barrier?

A single Class 7 or Class 8 barrier at the toe is the right answer when the modeled MEL stays within the 10,000 kJ ceiling of Class 8 certification, when the toe area can accept the heavier kit and its foundation work, and when the slope geometry allows a single foundation line. A staged mid-slope attenuator plus a lower-class barrier at the toe becomes the right answer on extreme-energy sites that exceed the 10,000 kJ Class 8 ceiling, on tall slopes where mid-slope anchor access is available and toe foundation work is constrained, or where two lower-class kits cost less than one Class 8 kit. Staging adds a second inspection and post-event maintenance scope but unlocks protection envelopes no single-line system can reach.

How are high-energy barriers anchored?

Foundations are matched to site geology and the Class 7-8 dynamic loads. Paired rock-anchored base plates with grouted bar or strand anchors are typical on competent rock outcrops where the anchor pair can develop the design pullout capacity. Micropile clusters are used in weathered or weaker substrate where the foundation must extend deeper into competent ground or where soil cover is too thick for direct rock anchors. Reinforced concrete footings with substantial embedment are used where soil cover is deep enough to support a spread foundation. Upslope and lateral support cables terminate in their own ground anchors, sized to the cable design load.

Can a high-energy barrier be reused after a hit?

Yes. The kit is engineered to be reset after an impact by replacing the deformed brake elements and any damaged net panels, while the posts, support cables, and foundations remain in service. After an event, the project team excavates the retained block from the catchment, inspects the foundations and post bases for damage, replaces extended brake elements with new units of the matching certified specification, and re-tensions or replaces net panels as needed. Most barriers can be back in service within days of a single MEL impact and through repeated SEL hits without component replacement.

What standards govern high-energy barrier design?

Three references control US practice. EOTA EAD 340059-00-0106 (formerly ETAG 027) is the certification standard requiring full-scale impact testing against SEL and MEL thresholds, with Class 7 rated to 4,500 kJ MEL and Class 8 rated to 8,000 kJ MEL or greater. FHWA-OR-EG-90-01 (the Rockfall Hazard Rating System, Pierson, Davis, and Van Vickle 1990) prioritizes which slopes get high-energy barriers in the first place. Transportation Research Board, Rockfall: Characterization and Control (Turner and Schuster, eds., 2012) is the comprehensive practitioner synthesis covering trajectory modeling, flexible barrier sizing, staged attenuator-plus-barrier systems, and post-event response.

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Methods

Related Techniques

Explore other engineering methods we use to deliver comprehensive geotechnical solutions.

Draped Mesh Systems

Draped mesh is a passive rockfall control system that hangs steel mesh from a single row of crest anchors and uses gravity tension to capture detached blocks and channel them into a catchment area at the slope toe.

Learn More

Mid-Slope Attenuators

Mid-slope attenuators are hybrid rockfall protection kits installed partway down a slope. The panel decelerates a falling block through controlled brake-element activation, then either releases it into a downstream catchment or contains it in place.

Learn More

Rock Bolting

Rock bolting stabilizes fractured, jointed, or unstable rock masses by anchoring steel bars deep into competent rock. By tying loose blocks back to stable substrate, rock bolts improve the overall strength and cohesion of slopes, cuts, tunnels, and vertical faces.

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Rock Scaling

Rock scaling is the controlled removal of loose, fractured, or detached rock from cut slopes, highway and rail corridors, mine highwalls, tunnel portals, and dam abutments to eliminate rockfall hazards at the source.

Learn More

View All Techniques