I'm working with a warehouse owner who has equipment that is on skids, stored onto racks. Each skid is less than 20 square-feet in plan view. This warehouse is only using single-row racks, not particularly high.
I understand 20 sqft to be the maximum threshold for an "open-rack" storage arrangement versus "solid shelves", by the definition of NFPA 13 for solid shelving.
If we maintain flue spaces all around of 6-inches, could the owner theoretically just store each skid at least 6-inches apart, and still not have solid shelf situation?
My gut says that 100-ft long, single row of racks with only this equipment on skids would act more like solid shelves, but if the flues are maintained, then it appears as if NFPA 13 still allows treatment like an open rack. This specific project may be more of a theoretical as the owner has plenty of floor space to limit the overall height of the racks, but I'd appreciate any feedback for future scenarios that come up like this.
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