BMP Slope Protection
BMP Steelgrid is a top-tier system for rockfall mitigation and slope consolidation. It combines double twist mesh with durable high tensile steel wire ropes. This makes it both strong and stiff.
Steelgrid HR Rockfall Netting features a patented high-strength steel wire mesh geocomposite. It integrates with anchor plates, specific U-bolts, and mesh connectors. This design protects roads, infrastructure, mines, and public areas from unstable rock slopes. Once installed, it effectively contains loose debris, ensuring it falls safely to the slope’s base.
WHY CHOOSE BMP STEELGRID HR?
- Versatile Use: Fits both simple drapery and pinned drapery systems including slope stabilization, rockfall protection, and surface protection.
- Strength Options: Offers a range of tensile strengths from 50kN/m to 180kN/m, allowing for cost and technical optimization.
- High Performance: Strong at low strain with high punch resistance and minimal deformation.
- Durable Coatings: Wires and ropes feature Galmac® galvanizing for basic protection and can also be coated with PVC for harsh coastal environments.
- Efficient Load Transmission: Reduces mesh stress by directing loads straight to the top anchors.
- Low Maintenance: Remains intact without unraveling even if a wire breaks.
- Adaptability: Easily conforms to existing slope and rock profiles.
- Installation Flexibility: Allows flexible anchor positioning to save time and reduce costs on-site.
- Easy Installation: BMP Steelgrid Comes in a single-layer composite that is quick and simple to install.
- Complete Kits: Provided as a “kit” with all necessary components for installation by a specialist contractor.
- Supportive Design Tools: Includes access to advanced software and ongoing training sessions or seminars for clients.
BMP Steelgrid HR offers reliable protection and easy installation, making it an ideal choice for projects that require effective rockfall and slope stabilization solutions.
Technical Informations
Table 1: Longitudinal Tensile Performance of Steelgrid HR Variants
| Steelgrid HR Variant | Nominal Longitudinal Tensile Strength (Peak value) |
|---|---|
| HR 30 | 177 kN/m |
| HR 50 | 122 kN/m |
| HR 100 | 80 kN/m |
Table 2: Punch Test Performance of Steelgrid HR Variants (According to UNI 11437)
| Steelgrid HR Variant | Punching Displacement at 50kN Punching Force | Ultimate Punching Force | Ultimate Punching Displacement |
|---|---|---|---|
| HR 30 | <330 mm | 149 kN | 420 mm |
| HR 50 | <360 mm | 125 kN | 470 mm |
| HR 100 | <420 mm | 85 kN | 455 mm |
Table 3: Standard Production Data of Steelgrid HR Variants
| Steelgrid HR Variant | Nominal Roll Width (by truck) | Nominal Roll Width (by container) | Nominal Roll Length |
|---|---|---|---|
| HR 30 | 2.85m | 3.15m | 25/40m |
| HR 50 | 25/40m | 3.25m | 2.75m |
| HR 100 | 25/40m | 3.10m | 2.85m |
Table 4: Standard Double Twist Mesh and Wire Data
| Mesh Type | D (mm) | ø Wire (mm) | Mesh Wire Diameter ø mm | Wire Diameter Tolerance (±) ø mm | GalMac® Minimum Quantity gr/m2 | Longitudinal Rope Diameter ø mm |
|---|---|---|---|---|---|---|
| 8×10 | 80 | 2.70 | 2.70 | 0.06 | 245 | 8.00 |
The BMP Steelgrid HR system installs much like conventional double twist mesh. It’s straightforward to handle and doesn’t need significant adjustments to your current installation methods. Adding steel ropes substantially improves how the system handles loads, boosting the safety, capacity, and durability of the mesh.
Steel wire for double twist hexagonal mesh includes:
- Tensile Strength: The wire used to make the mesh has a tensile strength between 380-550N/mm2, according to EN 10223-3 standards. It meets the wire tolerances of EN 10218 (Class T1).
- Elongation: The wire elongates no less than 9%, complying with EN 10223-3.
- GalMac® Coating: The wire is coated with at least the minimum amount of GalMac® required by EN 10244-2 (Class A).
- Adhesion of GalMac®: The GalMac® coating adheres to the wire, meeting the EN 10244-2 standards.
- Aging Test: The wire withstands 28 cycles of exposure to moisture and sulfur dioxide without showing signs of red rust, as per EN ISO 6988.
technical informations for steel wire ropes:
- Surface Finish: The rope wires are coated with a Zinc-Aluminium alloy (Zn-5%Al) to Class A standards, as outlined in EN 10244-2.
- Rope Diameter: The ropes are 8 mm in diameter.
- Rope Construction: The ropes are constructed as “6x7WC – WSC,” following the guidelines of EN 12385-2 2008 and EN 12385-4 2008.
- Rope Grade: The ropes have a nominal grade of 1770 N/mm2, as specified in EN 12385-4 2008.
- Breaking Load: The minimum breaking load for the ropes is 40.7 kN, defined in EN 12385-4 2008.
The BMP Steelgrid HR system and its components are designed for maximum performance and reliability, ensuring robust and long-lasting protection in various environments.
Applications:
BMP Steelgrid HR is perfect for various applications where safety and stability are critical. These include:
- Rockfall Mitigation: It protects infrastructure like roads, bridges, and homes near unstable slopes or cliffs.
- Slope Stabilization: It reinforces soil on steep slopes to prevent landslides and erosion, especially in areas prone to natural disturbances like earthquakes or heavy rainfall.
- Infrastructure Protection: It shields important public and private assets such as transportation networks, water management facilities, and power stations in hazardous rockfall zones.
- Architectural Applications: It serves as both a safety feature and an aesthetic enhancement in architectural projects, especially in scenic or natural settings where visibility and environmental integration matter.
- Environmental Conservation: It helps vegetation grow on degraded lands by stabilizing the soil and providing a foundation for plant recovery, thus boosting ecological restoration efforts.
Conclusion:
BMP Steelgrid HR stands at the forefront of innovation in rockfall mitigation and slope stabilization technologies. It features high-strength, double-twisted steel wire mesh paired with high tensile steel cables, offering an advanced solution that enhances durability, strength, and flexibility. This system fits smoothly with current installation methods, reducing the need for major changes and ensuring an easy implementation process. Thanks to its specialized coatings, BMP Steelgrid HR works well under various environmental conditions, providing a dependable and effective way to protect critical infrastructure and natural landscapes.
