Why wouldn't you just install a one hour rated door at the opening held open by 
a fusible link. When they have a fire in the pallet trailer, it would probably 
take 10 minutes to pick it with a dolly and move it to a safe location away 
from the dock. Or 20 minutes to become a smoldering pile of axels and frame 
rails. Either way a one hour door should protect the building interior.
Mark at Aero
602 820-7894

-----Original Message-----
From: Sprinklerforum [mailto:sprinklerforum-boun...@lists.firesprinkler.org] On 
Behalf Of craig.pr...@ch2m.com
Sent: Monday, September 19, 2016 7:11 AM
To: sprinklerforum@lists.firesprinkler.org
Subject: spray bar versus deluge heads for opening protection

Today's teaser.

An owner gives you this criteria for protecting a truck dock door opening.  A 
semi-trailer is parked at the opening up against the dock seal, the trailer 
contains wooded pallets.

The rollup door and the trailer doors remain open at all times for in and out 
access.

Their recommended method of protecting the opening is to use 1.5" pipe with 
1/4" holes drilled every 6".  Provide this around the opening which is 12" wide 
by 9' high.  This is approved by their international corporate safety 
department.

This will be a deluge system for two dock doors.

How are you going to calculate this?


Craig L. Prahl
Fire Protection Group Lead/SME
CH2M
200 Verdae Blvd.
Greenville, SC  29607
Direct - 864.920.7540
Fax - 864.920.7129
CH2MHILL Extension  77540
craig.pr...@ch2m.com

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