Guys, I think those of us that said the architect meant it was his responsibility to get it done and not the sprinkler guy. We've already debated here whether it's the sprinkler guy's responsibility to prove that a building will hold up the system, with surprisingly, some saying it is. I saw one contract wanting the sprinkler guy to prove that the system weight wouldn't negate the civil design. I'm thinking someone here is confusing a fire getting hot with heat gain. I'm always surprised by what a sub-contractor is ready and willing to do. And because they are they find themselves liable for engineering issues following an NFPA 25 inspection, or paying for structural calcs, or the soils engineer, and always acting as a bank that doesn't charge interest--and if there's a pay if paid clause a welfare agency for owners and general contractors. I'm thinking of getting into general contracting because I can get the sprinkler guy to pay for everything, carry it for ever at no interest, accept all liability and let the money flow through me.
On Wed, Jun 24, 2009 at 6:59 AM, Thom McMahon<[email protected]> wrote: > Craig is absolutely correct. The Arch. Designs the building elements, and > then the Mech. engineer determines the heat loss/gain for each element based > upon what it is made of an how it is constructed and the location and > orientation to the sun. This includes walls, floors, ceilings, roofs, > windows and doors. They also have to input for such things as occupant load, > (Body Heat) and electrical loads (watts per SF) from lighting computers or > other heat producing equipment. They need to allow for the proper mix of > "Fresh" air (outside air) and recirculated air based upon occupancy, add in > any ventilation for things such as fume hoods or bathrooms and exhaust > hoods. Then there is the inevitable "And More". > > These calculations then become the "Basis of Design" for the heating and > cooling. > > More to the point, without that engineering degree, those classes in heat > transfer, and years of experience, you'd be out of luck trying this on your > own. > > The simple answer is "Not MY Job!" > > Thom McMahon, SET > Firetech, Inc. > 2560 Copper Ridge Dr > P.O. Box 882136 > Steamboat Springs, CO 80488 > Tel: 970-879-7952 > Fax: 970-879-7926 > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of > [email protected] > Sent: Wednesday, June 24, 2009 6:18 AM > To: [email protected] > Subject: RE: Heat gain/loss calculations > > The mechanical/HVAC engineer or contractor does that. An Architect would > have no clue, not their area of expertise. > > > Craig L. Prahl, CET > Fire Protection Specialist > Mechanical Department > CH2MHILL > Lockwood Greene > 1500 International Drive > PO Box 491, Spartanburg, SC 29304-0491 > Direct - 864.599.4102 > Fax - 864.599.8439 > [email protected] > http://www.ch2m.com > > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Jay White > Sent: Tuesday, June 23, 2009 5:49 PM > To: [email protected] > Subject: Heat gain/loss calculations > > Who is responsible for performing the heat gain/loss calculations in a > building? > > > Jay White > Estimator/Design Manager > Dynamic Fire Protection > 1807 Hwy. 25 South > Starkville, MS 39759 > Phone: 662-324-1550 > Fax: 662-324-1545 > Cell: 662-312-2426 > > > _______________________________________________ > Sprinklerforum mailing list > http://lists.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 > http://lists.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 > http://lists.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) > -- Ron Greenman Instructor Fire Protection Engineering Bates Technical College Tacoma, WA Member: SFPE, ASCET, NFPA, AFSA, NFSA AFAA _______________________________________________ Sprinklerforum mailing list http://lists.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)
