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Double-Twist Gabion Box - Retaining Wall Construction

Gabion Basket

Q: Q1: What's the corrosion resistance of your Gabion Basket in seawater?

A: Our hot-dip galvanized baskets (Zn≥220g/m²) pass ISO 9227 salt spray testing for 2,000+ hours – ensuring 40+ years service life in coastal zones. Galfan® (Zn-5%Al) option available for harsh pH environments.

Q: Q2: How do you prevent longitudinal seam failure?

A: Through staggered joint installation per ASTM D6637: Vertical offset ≥300mm between units Double-helix binding at ≤500mm pitch ≤3% deformation under 50kN/m² load

Q: Q3: What stone specifications meet engineering standards?

A: We require: ✓ Gradation: 80-200mm diameter (15%

Q: Q4: Can Gabion Basket withstand seismic activity?

A: Yes! Our flexible hexagonal mesh absorbs up to 15cm ground displacement (Richter 7.0) – 300% better than rigid concrete walls.

Wire Mesh Fencing

Engineered with hot-dip galvanized steel wire (Zn≥220g/m²) in ASTM A975 compliance, our gabion baskets feature dual-twist hexagonal weaving for maximum tensile strength (350-500N/mm²). Pre-assembled modules enable rapid on-site deployment with:
✓ Zero longitudinal seams (staggered joint design)
✓ ≤3% deformation under 50kN/m² loads
✓ 40-year service life in coastal environments
Ideal for slope stabilization, river revetments, and retaining walls.

Understanding the Gabion Basket

Technical Product Description

Gabion Basket System
*EN 10223-3 & ASTM A975 Certified Erosion Control Solution*

Core Construction
▸ Fabricated with ISO 9444-compliant low-carbon steel wire
▸ Double-twist hexagonal mesh woven by CNC machinery (diameter tolerance: ±0.1mm)
▸ Anti-corrosion protection:

Primary: Hot-dip galvanizing (Zn coating ≥220g/m²)
Optional: Galfan alloy coating (5% Al-Zn) for pH 3-11 resistance

Engineering Advantages

Performance Metric	Test Result	Standard
Tensile Strength	350-500 N/mm²	EN 10218-1
Deformation Resistance	≤3% under 50kN/m² load	ASTM D6637
Service Life	40+ years coastal zones	ISO 9227

Operational Benefits

Channel StabilizationReduces flow velocity by 60% (vs concrete channels)
Slope Consolidation98% sediment retention in 25° inclines
Infrastructure ProtectionPrevents 80% roadbed collapses in flood zones

Main construction requirements

Ⅰ. Pre-Installation Preparation

Slope Profiling
- Trim substrate to remove protrusions >50mm
- Maintain natural contours (max. 15mm elevation variance per 3m)

Ⅱ. Assembly Sequence

Step	Critical Operation	Tolerance
1	Staggered Placement – Offset joints vertically ≥300mm	±25mm
2	Panel Erection – Secure adjacent sides with 2.2mm binding wire	Spiral pitch ≤500mm
3	Tiered Connection – Lash lower border to underlying unit at 150mm intervals	Zinc coating damage <3%

Ⅲ. Stone Filling Specifications

Material Requirements:markdown• Origin: Alluvial river stone (ASTM D75) • Compressive Strength: ≥25 MPa (EN 1926) • Gradation: 80-200mm diameter (15% <80mm allowed)
Placement Protocol:
- Fill simultaneously across entire tier
- Max. elevation differential: 350mm between adjacent units
- Achieve 95% compaction density

Ⅳ. Capping & Ecological Integration

Cover Installation:
- Secure lid with double-helix binding pattern (pitch ≤50mm)
Vegetative Layer:
- Apply 100-150mm humus topsoil (pH 6.0-7.5)
- Seed with Festuca arundinacea (erosion control grass)

FAQ

Q1: What's the corrosion resistance of your Gabion Basket in seawater?

A: Our hot-dip galvanized baskets (Zn≥220g/m²) pass ISO 9227 salt spray testing for 2,000+ hours – ensuring 40+ years service life in coastal zones. Galfan® (Zn-5%Al) option available for harsh pH environments.

Q2: How do you prevent longitudinal seam failure?

A: Through staggered joint installation per ASTM D6637:

Vertical offset ≥300mm between units

Double-helix binding at ≤500mm pitch

≤3% deformation under 50kN/m² load

Q3: What stone specifications meet engineering standards?

A: We require:
✓ Gradation: 80-200mm diameter (15% <80mm allowed) ✓ Compressive strength: ≥25 MPa (EN 1926) ✓ Placement control: Max. 350mm fill height differential

Q4: Can Gabion Basket withstand seismic activity?

A: Yes! Our flexible hexagonal mesh absorbs up to 15cm ground displacement (Richter 7.0) – 300% better than rigid concrete walls.

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