8/5/2023 0 Comments Pallet rack autocad drawingThe flue requirements will present design challenges for drive-in racking, pallet-flow racking, and push-back racking systems. These multi-row racks will also require full-depth, full-height longitudinal flues – the space between rows of pallet rack, in addition to transverse flues – the space between the stored items. “Solid shelving” is a rack shelf that is solid, slatted or otherwise constructed in a manner that would obstruct sprinkler discharge down into the racks. Under the new rules, racking depths greater than 20 feet will fall under the “solid shelving” criteria, requiring in-rack sprinklers rather than solely utilizing “early suppression, fast response” ceiling sprinklers with flue space requirements for water to reach into rack sections. The density/area curves will still apply to the evaluation and modification of existing systems.Īnother major change involves standards for multiple-row racking. “Density” is the amount of water that needs to be delivered every minute for every square foot of floor space. The biggest change in the NFPA 13 changes for 2022 could be the sprinkler head density determination, which will move away from a density/area curve calculation to a single-point method. ![]() ![]() Two big changes affecting pallet rack systems are in the updates. ![]() Integrated fire suppression in rack system
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