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12M Octagonal Polygonal Street Light Pole BS EN 40 Standard
| Diameters | Top: Ø90mm / Bottom: Ø220mm |
| Wall Thickness | 4.0mm (5.0mm Optional) |
| Flange Plate | 400 x 400 x 20mm |
Talk to Our Engineer Now 1. Octagonal Geometry for Vortex Shedding Mitigation
At 12 meters (40ft), cylindrical poles are highly susceptible to Kármán vortex shedding, which induces destructive harmonic oscillation. This column utilizes a specific 8-sided octagonal cross-section. This faceted profile disrupts aerodynamic airflow, significantly dampening wind-induced vibrations and preventing metal fatigue in the Q235B structural shaft and the attached LED luminaires.
2. 20mm Base Flange for Extended Outreach Arms
Highway applications frequently mandate 1.5m to 3.0m outreach brackets to position the luminaire directly over the carriageway. To safely transfer the resulting asymmetrical bending moments, the foundation connection employs an oversized 400x400mm flange plate with a robust 20mm thickness. This absolute rigidity prevents base plate cupping and secures the 4.0mm vertical wall against lateral wind gusts.
3. BS EN 40 & BS 5135 Structural Compliance
Manufactured for international civil engineering projects, the column’s structural design is strictly compliant with British Standard BS EN 40. The raw steel meets BS EN 10025 S275 / JIS G3101 SS400 specifications. Furthermore, the longitudinal seam is automatically continuously welded using the Metal Inert Gas (MIG) process conforming to BS 5135, guaranteeing homogeneous tensile strength along the entire 12M shaft.
4. BS EN ISO 1461 Galvanizing Standard
To ensure zero maintenance interventions over a 25-year lifecycle, the structure is Hot Dipped Galvanized in accordance with BS EN ISO 1461, yielding a dense zinc barrier of ≥85μm. A secondary heat-cured powder coating (≥60μm) is applied, providing superior resilience against highway salt spray, exhaust emissions, and UV radiation.
| Model Reference | DL01-A01A03-040 |
| Pole Height | 12M (Approx. 39.37FT) |
| Manufacturing Standard | BS EN 40 Compliant |
| Raw Material Spec | BS EN 10025 S275 / JIS G3101 SS400 |
| Cross-Section Geometry | Octagonal (8-Sided Polygonal) |
| Top Shaft Diameter | Ø90mm |
| Bottom Shaft Diameter | Ø220mm |
| Structural Wall Thickness | 4.0mm (5.0mm Option Available) |
| Base Flange Dimensions | 400 * 400 * 20mm |
| Seam Welding Process | MIG Continuous Welding (BS 5135) |
| Electrical Maintenance | Flush Service Door with Internal Earth/Grounding Lug |
| Galvanizing Standard | BS EN ISO 1461, Zinc Coating ≥ 85μm |
| Powder Coating | ≥ 60μm Thickness (Custom RAL Colors Available) |
Civil Engineering Applications for 12M Octagonal Columns
The 12-meter (40ft) column is the global standard for heavy highway and arterial infrastructure. Its octagonal cross-section and 20mm thick flange provide the payload capacity required for high-speed, multi-lane illumination.
Primary Highway Networks & Expressways
Illumination Strategy: Illuminating 4-to-6 lane highways requires the light source to be elevated to 12 meters to achieve wide horizontal lux distribution across the entire right-of-way (ROW) without causing blinding forward glare to high-speed drivers.
Structural Benefit: Highway setbacks dictate poles must be placed further from the carriageway edge. The robust Q235B octagonal steel structure safely supports long 2-meter to 3-meter double-outreach arms, accurately positioning heavy luminaire heads directly over the active traffic lanes without yielding to wind shear.
Major Urban Intersections & Roundabouts
Illumination Strategy: Complex traffic junctions demand high vertical illuminance and overlapping beam patterns to ensure drivers can rapidly identify merging lanes, pedestrians, and traffic signals.
Structural Benefit: The widened Ø220mm base diameter provides the supreme torsional rigidity needed when mounting multiple directional floodlights on a single post. The integrated service door allows rapid ground-level maintenance of electrical breakers without disrupting traffic flow with heavy bucket trucks.
Heavy Logistics & Inland Freight Ports
Illumination Strategy: Inland freight terminals require lighting structures that clear the operational height of 18-wheeler articulated trucks, preventing accidental impact damage.
Structural Benefit: Elevating the fixture to 12 meters removes it from the operational hazard zone. More importantly, the continuous harmonic vibrations caused by thousands of tons of passing freight are safely dissipated through the 20mm heavy-duty flange plate into the concrete footing, preventing structural fatigue over decades of use.
