In defense engineering, barrier dimensions directly determine protective efficacy—from flood interception to blast resistance. As HESCO’s strategic manufacturer, JOESCO delivers QS Series standardized barriers (12 base sizes + full customization), balancing rapid deployment and structural integrity through geometric optimization. This guide decodes QS Series dimension selection logic for military, flood control, and critical infrastructure scenarios.
QS Series Standard Dimensions & Performance Thresholds
| Model | Height | Width | Length | Core Applications | Protection Capability |
|---|---|---|---|---|---|
| QS-2 | 0.61m | 0.61m | 1.22m | Traffic control, crowd management | Halts 2.5-ton vehicles (30km/h impact) |
| QS-3 | 1.00m | 1.00m | 10.00m | Urban flood walls, checkpoints | Resists 1m flood surges; stops 7.62mm rounds |
| QS-7 | 2.21m | 2.13m | 27.74m | Military bases, VBIED protection | Blocks 7.5-ton trucks (50km/h); deflects RPG fragments |
| QS-10 | 2.21m | 1.52m | 30.50m | Border fortifications, high levees | Withstands 100kg TNT blast (5m distance) |
| QS-12 | 2.13m | 1.06m | 33.00m | Coastal barriers, runway safety | Resists 3.5m/s wave action |
Note: All models support vertical stacking (e.g., dual QS-3 = 2.74m wall) and horizontal interlocking via ASTM F2656-rated pins.
Three Principles of Dimension Engineering
- Height Dictates Protection Tier
- •≤1m: Flood/erosion control (flow velocity <2m/s)
- •1.37–1.68m: Minimum for small-arms ballistics (STANAG 4569 Level 1)
- •≥2.21m: Base height for blast walls (1.5m thickness stops RPG penetration)
- Width-to-Height Ratio Ensures StabilityBase ratio strictly ≤1:2.5 (e.g., QS-7 requires ≥0.88m base). Anchor kits mandatory for slopes >25°.
- Length Optimizes Deployment Efficiency10m-long units (QS-3/QS-7) reduce joint points by 30%, enabling mechanized filling at 80 tons/hour.
Custom Dimension Solutions for Critical Scenarios
- Flood Control (Iowa Protocol):Terraced QS-3 units in “V” formations handle 3m/s currents; stacked QS-10 reaches 4m levee height.
- Urban Security (London Case):QS-2 (0.61m×0.61m) filled with stone blends with architecture while stopping 2.5-ton vehicle rams.
- Mountain Outposts:Curved QS-7 units (≥5m radius) adapt to rugged terrain, cutting foundation work by 50%.
Height-Specific Fill Material Optimization
| Height | Recommended Fill | Compaction Density | Functional Goal |
|---|---|---|---|
| 0.61m | Crushed gravel (10–40mm) | 85% Proctor | Rapid deployment + erosion control |
| 1.37m | Sand-rubber composite (70:30) | 90% Proctor | Shock absorption; fragment containment |
| 2.21m | Aggregate + soil cement | 95% Proctor | Blast wave deflection; anti-ramming |
JOESCO QS Series Innovations
- QS-2E Economy: 40% smaller folded volume; fits 300 linear meters per container.
- QS-7S Smart: Embeds strain sensors to alert on >5cm deformation in real-time.
Four-Step Dimension Selection Protocol
- Threat Quantification: Flood depth? Vehicle mass? Explosive yield?
- Terrain Assessment: Slope >25°? Anchor space?
- Deployment Timeline: Require <4-hour installation for 100m barrier?
- Lifecycle Needs: Need 10-year reuse?
