RE: FW: Maximum Velocity

2007-11-14 Thread Brian Harris
Reza, Thanks for the info Brian Harris FDFP INC. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Reza Esmaeili Sent: Wednesday, November 14, 2007 12:55 AM To: sprinklerforum@firesprinkler.org Subject: Re: FW: Maximum Velocity Brian, If you are

RE: SHADOWS

2007-11-14 Thread Russell
I too recall something about this. If my memory serves me right, several years ago it was on this forum and Roland had some input on this subject. Ron -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Bill Minkel Sent: Tuesday, November 13, 2007 5:26 PM

Re: DDCVA

2007-11-14 Thread Dennis J Briggs Jr.
THANKS FOR THE HELP. Dennis Briggs, Jr. br Miller Fire Protection Inc. br 2750 Marble Ct. br Forestville MD. 20747 br Office - (301) 736-3000 br Cell - (240) 304-8967 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Sent: Tuesday, November 13, 2007 09:06 PM To:

Polyester Fabric Roll Storage

2007-11-14 Thread Sean Conlin
Does anyone have any experience with rack storage of polyester fabric on paper rolls? - double row racks, - solid shelving, - 3 levels of storage (2 solid shelves) not greater than 60 apart vertical, - 3 transverse flues at the rack uprights, -

RE: Maximum Velocity

2007-11-14 Thread Steve Leyton
Funny that this is an active thread again. Just got a spec' for an Army Housing project. They call for a design in accordance with NFPA 13R, and rack sprinklers per NFPA 230 with a maximum velocity of 20 FPS. The real question here is where can I find out the country of origin of the dope the

RE: Maximum Velocity

2007-11-14 Thread Todd Williams - FPDC
If this is a US Government job, it probably has to be from a domestic supplier.. At 04:07 PM 11/14/2007, you wrote: Funny that this is an active thread again. Just got a spec' for an Army Housing project. They call for a design in accordance with NFPA 13R, and rack sprinklers per NFPA

Re: Maximum Velocity

2007-11-14 Thread Roland Huggins
also look at 13: A.22.4.1 (last sentence) It is not necessary to restrict the water velocity when determining friction loss using the Hazen-Williams formula. This is also in the 02 edition. Roland On Nov 12, 2007, at 6:41 AM, Brian Harris wrote: What's the general rule of thumb for

RE: Maximum Velocity

2007-11-14 Thread Mike Brown (TECH- GVL)
I guess being old and having been around for a long time. The 32 ft per sec came from some old water distribution engineering manuals and became sort of a rule of thumb for sprinkler calculations in that when you get above that velocity the friction loss gets larger in a hurry. At one time FM

RE: Maximum Velocity

2007-11-14 Thread Paul Sincaglia
Steve- Look at the bright sideI had a project where the feds asked for a max velocity of 18.6 fps. When I asked about itI was told it had something to do with laminar flow. 100% pure District of Columbia pipe Dope. Paul -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL

RE: Maximum Velocity

2007-11-14 Thread Jack Kilavuz
Mike Memory says FM lifted that speed limit a few years back, and before then it only applied to pipes 2 in and smaller. Any FM people in the Forum to comment? Joe? Jack C Kilavuz Mike Brown

Re: Maximum Velocity

2007-11-14 Thread Peter Nadhazy
Mike, We use the Potter VSR-F flow switches for main and sectional control. I am sure you are aware that there is a max. design water flow velocity (surge) limit (18 FPS) allowed going through the water flow indicator switch per UL/FM listing/approval. Peter Nadhazy - Original Message