JOESCO HESCO Barrier QS7 – Heavy-Duty 5-Cell Blast & Flood Protection System

2025-10-14

Product Overview

The JOESCO QS7 HESCO barrier is engineered for high-threat scenarios requiring superior blast resistance and large-scale flood mitigation. With dimensions of 2.21 meters in height, 2.13 meters in width, and 10.65 meters in length, this 5-cell unit offers unmatched stability and fill capacity. Constructed from Galfan-coated steel mesh and a heavy-duty geotextile liner, the QS7 can be rapidly filled with on-site materials like sand, gravel, or crushed rock. Its robust design ensures rapid deployment for critical infrastructure protection, military base fortification, and coastal defense applications.

Key Features & Advantages

Exceptional Stability:

The 2.13m width provides a broad base, reducing tipping risks on soft or saturated soils. This design is critical for flood zones and blast-prone areas where structural integrity is paramount.
High-Speed Deployment:

A 3-person crew with an excavator can install 100 linear meters in under 4 hours. Pre-assembled spiral connectors and reinforced seams accelerate alignment and interlocking.
Multi-Threat Resilience:
- Blast Resistance: Withstands overpressure up to 15 PSI (equivalent to a 100kg TNT detonation at 10m distance) when filled with compacted sand-gravel mix.
- Flood Control: Holds against water currents exceeding 3.5m/s, validated in riverbank and coastal applications.
- Vehicular Impact: Stops 7.5-ton vehicles traveling at 50km/h, ideal for checkpoint security or construction zone protection.

Primary Applications

Military Base Fortification:

Used to create perimeter walls that protect against blasts, fragments, and vehicle incursions. The height and width make it effective for shielding critical infrastructure within forward operating bases.
Flood and Erosion Control:

Deployed along riverbanks or coastal areas to stabilize slopes and divert water. The additional mass helps resist undermining during prolonged water exposure.
Industrial Security:

Safeguards oil refineries, chemical plants, and power stations by containing explosions or redirecting debris.

Technical Specifications

Parameter	Details
Dimensions (HxWxL)	2.21m x 2.13m x 10.65m
Cell Configuration	5 cells/set
Fill Volume	50.2 m³ per unit
Material	Galfan-coated steel (4–5mm wire) + polypropylene geotextile
Stacking Capacity	Up to 2 layers (4.42m total height)

Why Choose the QS7?

The QS7’s 2.21-meter height and 2.13-meter width translate into tangible operational advantages:

Superior Stability: The wider base increases resistance to sliding and overturning, especially in saturated or uneven terrain.
Cost Efficiency: Reusable design allows barriers to be relocated across multiple projects, reducing long-term costs by 50% versus concrete alternatives.
Adaptability: Can be stacked or arranged in curves to fit complex terrain requirements.

Comparison with Other Models

Metric	QS7 (2.13m W)	Standard 1m-Wide Barrier
Base Stability	2.5x higher	Baseline
Flood Resistance	3.5m/s	2.0m/s
Blast Rating	15 PSI	10 PSI

How to Deploy the QS7

Site Preparation: Clear debris and level the ground. On slopes greater than 15°, anchor the first unit to bedrock.
Unfold and Connect: Expand the barriers and link them using spiral connectors. Ensure gaps are less than 5mm.
Filling: Use local fill material—sand for ballistic protection, gravel for drainage, or a mix for blast absorption. Compact in 30cm layers to achieve 95% Proctor density.

Pro Tip: For blast protection, use a mix of sand and rubber crumb (70:30 ratio) to improve fragmentation absorption.

Case Study: Protecting a Coastal Power Plant

Challenge: A power plant needed to protect its infrastructure from storm surges and potential security threats.

Solution:

Deployed QS7 barriers in a terraced formation along the coastline.
Filled with a mix of local sand and crushed limestone.

Result: The barriers withstood a 2.5-meter storm surge and showed no signs of structural damage. The project was completed in 48 hours.

hesco barriers