Our Calculation Tool streamlines the entire process of estimating materials for cable tray projects. As a key structure supporting the cable tray, the accurate calculation of the support quantity directly affects construction costs, efficiency, and safety. 34/ft using 20 ft sections in tray and 10 ft sections for the drop. Select Fill. Cable tray installation cost per meter varies by specifications; GangLong Fiberglass offers kits for raised floor system and facility needs. Cable trays are vital in electrical installations, providing secure pathways for power, communication, and control cables across residential, commercial, and. Use our free cable tray support spacing calculator to find the precise spacing.