I think you meant to ask what happened to Table 21.2.2. During the revision cycle for the 2016 edition, Section 21.2 was greatly revised. Table 21.1 was deleted and so Table 21.2.2 from the 2013 edition became a new Table 21.2.1 in the 2016. This table was also revised, to delete the bin box and shelf storage, hose stream and duration columns, etc. so it looks different. Here is the Committee Statement for First Revision No. 229:
“The revisions to section 21.2 and the associated tables eliminate a significant amount of redundancy. Hose stream and duration columns were deleted since this required is address in Table 21.4.1. Extended coverage sprinklers utilizing Fast Response or Standard Response elements are all in the standard response category. The testing associated with the referenced sprinkler did not include bin box or shelf storage, therefore these arrangements are not considered in the tables.” In the 2019 edition, it is now Table 24.2.1. Best regards, Larry Keeping From: Sprinklerforum <[email protected]> On Behalf Of Ben Young via Sprinklerforum Sent: December-06-19 3:48 PM To: 321 via Sprinklerforum <[email protected]> Cc: Ben Young <[email protected]> Subject: Missing table in chapter 21 Does anyone know what happened to Table 22.2.2 in between the 2013 and 2016 editions? Nothing explaining the lack of the table in the annex or handbook commentary that I can see. The table was titled Palletized, solid-piled, bin box, shelf, or back to back shelf storage of class 1 through class 4 and cartoned unexpanded commodities. My educated guess is that someone figured out that solid shelves don't do so well in these situations. I checked in 2019 as well, not in there either. RIP back-to-back shelf storage 6 EC head calcs with 250 GPM hose I guess. Benjamin Young
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