Mark,
First and foremost, this is an application that (due to what I presume
are solid shelves) takes advantage of none of ESFRs strengths but is
subject to all of their weaknesses. Unless these shelves are in a small
area of a facility that is otherwise a good fit with ESFRs, ESFRs are
the wrong choice.
If the ESFR protection is already existing and the shelves meet all
definitions of shelf storage, then you are OK as long as you meet the
obstruction rules.
The bottom line is that, in order for suppression to reliably occur, you
have to meet the obstruction rules, regardless of storage height. While
lowering the storage height makes a fire easier to suppress, increasing
the clearance makes it harder. The solid shelves further exacerbate the
challenge.
Joe
Phelps, Mark wrote:
Mr. Joe Hankins, If you are on line, could you comment on the application of ESFR (K14 at 75 PSI) installed below a 40' high roof protecting class I thru IV misc storage on library style shelves (not an actual library). My specific question is, " do all of the design requirements and obstruction requirements (conduit banks, lights, ducts, etc.) and exceptions apply equally as if it were double row racks of I thru IV stored to 30'?
Mark at Aero
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