If the trailer is in the same exact spot, could a flexible drop be fitted coming down from the roof system and have a bracket rigged to effect an EC HSW pointing into the back of the trailer spraying into it? Then you only have the shielded area below the trailer to either deal with- whether its increased MRA size, a similar HSW on the side if positioning is consistent, housekeeping if its always clear below it**....
**I agree, for ex, its dumb to sprkr under 18" hi conveyors in a FedEx-type sorting facility cause they CAN'T have stuff accumulate- that "stuff" is the package heading for Albany. If their trailer work is inside the box, with staging of combustibles (assuming some plastic pc-server type of gear, group A) all to the rear of it, no work or storage or accumulation under it, then hazard addressed as a specific obstruction without wholesale damage to the budget over a large area. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Wednesday, January 06, 2010 10:52 PM To: [email protected] Subject: RE: trailer parked inside I think you're on the right track. But find out the fuel load inside the trailer. I would compare that with the fuel load in a standard vehicle (I don't think the intent is to include the gasolene in the fuel tank)in a parking garage (OH1) with that for the combustible interiors in a manufactured home assembly (EH2). Is it parked in one spot all the time, which is most likely if there is only one overhead door. If so, you could design only that area + 15 feet beyond to the hazard you select. Hopefully, that one spot won't also be the hydraulically most remote. Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Todd Williams Sent: January 6, 2010 6:54 PM To: [email protected] Subject: trailer parked inside I am looking at a project where a company will back a full size trailer into a building and retrofit it with electronic equipment (think big mobile news truck). Only one trailer will be in the building at a time. The rest of the facility will be electronic assembly and 14 ft rack storage of electric equipment. I'm thinking I have to look at this as extra hazard group 2 (similar to manufactured home assembly - due to the shielded fire potential). I am getting a lot of resistance from the architect, contractor and the owner that it is not that severe since it is only one truck and only occupies 10% of the space. The space is wide open with no enclosures. Am I on target with this or over-engineering yet again? Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut www.fpdc.com 860.535.2080 _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
