How Are Street Lamp Poles Classified According To Wind Resistance?

Street lamp poles, as outdoor municipal facilities exposed for extended periods, are constantly subjected to strong winds, gusts, and severe convective weather. Wind resistance is a core indicator of the safety and quality of street lamp poles, directly affecting road safety and the lifespan of the facility. Below, street lamp pole manufacturer Phoebus introduces the classification standards, influencing factors, and selection points for street lamp pole wind resistance levels.

I. Classification Basis and Core Standards

The classification of street lighting poles for wind resistance level is mainly based on the local basic wind pressure, wind speed, pole material, height, wall thickness and structural design, referring to "Code for Design of Building Structures" and "Technical Conditions for Road Lighting Poles". The basic standard is the wind pressure value transformed from the wind speed with a return period of 50 years at a height of 10 m above the ground. This serves as the core basis for the wind resistance design, selection, and production of street lamp poles, and is a key parameter for the procurement and installation of street lighting poles for municipal lighting, rural roads, and scenic areas.

II. Commonly Used Wind Resistance Rating Standards

1. Level 6-8 Wind Resistance Rating:

Suitable for inland plains without wind disasters, ordinary rural roads, residential courtyards, and pedestrian walkways in industrial parks. Corresponds to a maximum wind speed of 10.8-20.7 m/s. Suitable for standard round poles and thin wall street lights below 6 meters. Standard hot dip galvanised and powder coated materials will be sufficient. It can stand upright stably in the normal windless weather and strong convective weather and will not easily tilt or sway.

2. Wind resistance rating 9-10:

For streetlights installed in windy inland areas, urban main and secondary roads, county roads, and industrial parks. Wind speed range 20.8-28.4 m/s. Requires stronger pole walls, reinforced flanges and pre-embedded reinforced foundation. Generally, medium-high streetlights of 8-12 meters are made with this degree of resistance to strong gusts and gales during the rainy season.

3. Level 11-12 Wind Resistance Rating:

For streetlights in coastal cities, typhoon-prone areas, island scenic areas, and coastal roads. High wind resistance (28.5–36.9 m/s) requires thickened tapered poles, octagon poles, advanced welding processes, oversize flanges and deepened concrete foundations. The entire structure is reinforced to protect against corrosion and to reinforce the structure against direct typhoon impacts.

4. Special Ultra-high Wind Resistance Rating:

For coastal wind gaps, cross-sea roads, high-mast lights and ultra-high streetlight poles with a height of more than 15 meters. The design is based on the level 12 typhoon and above Using high-strength steel, segmented reinforced structure and professional wind resistance calculation. Before delivery, wind pressure simulation tests are carried out to ensure that no breakage or toppling will occur during extreme winds.

III. Key Factors Affecting the Wind Resistance Rating of Street Lighting Poles

1. Pole Parameters:

Higher height and thinner wall thickness result in weaker wind resistance; tapered poles are superior to straight poles, and octagonal poles offer better wind resistance stability than round poles.

2. Installation Foundation:

The depth of the embedded foundation, the concrete grade, and the size of the flange directly determine the overall wind resistance.

3. Material and Construction:

Hot-dip galvanized thickened steel offers significantly superior wind resistance compared to ordinary thin-material welded poles.

IV. Practical Selection Recommendations:

Height is not the only factor to consider when purchasing street lighting poles. First you need to find the average max wind speed and pressure for the area per year. For plains areas, choose poles up to level 8. For inland areas prone to frequent winds, opt for level 10. For coastal typhoon zones, a custom-made wind-resistant model rated at level 11-12 is a must. This avoids the dangers of pole tilting and collapse in high winds.

Street lamp poles are exposed to the outdoors year-round, enduring strong winds and severe weather. Phoebus, a street lamp pole manufacturer, strictly controls material structure and manufacturing processes, customizing wind resistance levels according to national standards to suit road lighting projects in various regions. Welcome to contact us for purchase!