Long-span cable trays in Norway can span up to 12 meters (approximately 12.2 meters) without intermediate supports.

Typical Span Lengths

Long-span cable trays are designed to carry electrical and instrumentation cables over extended distances without requiring frequent supports. In Norway, as in other industrial and commercial applications, these trays typically cover spans of 6 meters, 9 meters, or 12 meters, with some specialized aluminum trays reaching 12.2 meters (40 feet) per straight section . This reduces the number of supports, bolts, and columns needed, saving installation time and costs .

Materials and Design Considerations

• Materials: Common materials include galvanized steel, aluminum, stainless steel, and fiberglass composites, chosen based on load, corrosion resistance, and environmental conditions .
• Support Requirements: Standard cable trays require supports every 1.5–3 meters, whereas long-span trays are engineered to handle heavier loads and maintain sag limits over 6–12 meter spans .
• Applications: Long-span trays are ideal for industrial plants, offshore installations, roadway crossings, and pipe bridges where long straight paths are needed .
• Safety and Standards: Installation follows standards such as IEC 61537 to ensure safe working loads and minimal deflection .

Advantages of Long-Span Trays

• Fewer supports and faster installation
• Clear floor space and reduced trip hazards
• Efficient cable management with easier maintenance access
• Cost savings on materials and labor due to reduced support requirements

In summary, long-span cable trays in Norway typically range from 6 to 12 meters, with specialized aluminum trays reaching 12.2 meters, providing efficient, safe, and cost-effective solutions for long cable runs in industrial and commercial settings .