I'm out of touch with the FM data sheets these days, but from an NFPA 13-2013 perspective, I think Sections 12.1.3.3 and 12.12.3.3 would come into play:
12.1.3.3 The sprinkler system design shall be based on the storage height and clearance to ceiling that routinely or periodically exist in the building and create the greatest water demand. Where storage is placed above doors, the storage height shall be calculated from the base of storage above the door. 12.12.3.3 Where idle pallet storage is above a door, the idle pallet storage height and ceiling height shall be calculated from the base of storage above the door using the applicable protection criteria referenced in Section 12.12. >From this, I would conclude that the sprinkler protection for 6 ft of idle >wood pallets from Tables Table 12.12.1.2 (a) (b) or (c) would be called for. >For idle plastic pallets, compliance with Section 12.12 would be needed. It should be recognized that the above is just my personal opinion, and has not been processed as a formal interpretation in accordance with the NFPA Regulations Governing Committee Projects and should therefore not be considered, nor relied upon, as the official position of the NFPA, nor any of their technical committees. Best regards, Larry Keeping From: Sprinklerforum <sprinklerforum-boun...@lists.firesprinkler.org> On Behalf Of James Crawford Sent: November-13-18 3:19 PM To: sprinklerforum@lists.firesprinkler.org Subject: Pallet storage above overhead doors We are working on a project where the tenant wants to store pallets above the overhead loading doors to a height of 6'-0" in the loading dock area.. The project will be using Factory Mutual data sheets, so I went to DS8-24 Idle Pallet Storage and because they are on racks it send me to DS8-9 and 8-9 tells me to use rack storage for Un-cartoned, un-expanded Group "A" plastics Table 10. Based on the height of the building (40'-0") I would need ESFR K25 operating at 60psi to protect 6'-0" of wooden pallets, this seems a little excessive. So if we add a level of in-racks sprinkler heads and use Table 13 we would have 5' to 10' storage above the sprinkler and 10' to 20' clearance above the top of the pallets. So this tells me to use the 15' storage from Table 10 or ESFR K25 @ 25psi plus 1 level of in-racks. Still seems a little excessive. Am I reading this right? Thank you James Crawford Phaser Fire Protection Ltd. Phone 604-888-0318 Fax 604-888-4732 Cel 604-790-0938 Email jcrawf...@phaserfire.ca<mailto:jcrawf...@phaserfire.ca> Web www.phaserfire.ca<http://www.phaserfire.ca>
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