Can cable trays and air ducts share the same support frame
Shared Support Systems: While a cable tray cannot support an air duct, both systems can often be fixed to the same primary structural steelwork or suspended from the same concrete slab, provided the supports are engineered for the combined load. On any project, these two systems must be carefully coordinated to share the same space efficiently and safely. This is managed through a Building Information Model (BIM) or detailed service co-ordination drawings, which act as a master plan to avoid clashes. NEC section 300-8 does not permit any tube, pipe, or equal for water, air gas, drainage, steam, or any service other than electrical in raceways or cable trays containing. Furthermore, the TIA-569-B standard promotes non-continuous supports as a means to route cable bundle as well (see Appendix B).
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