Thanks, you got the gist of my post. Kinda frustrated by all the manual massage required to make these peculiarities perform. I know instances like sidewalls and pendent in the same soffit with overlapping areas must be manually edited. But things like stabbing a 5' branchline off a main to get a head somewhat into the center of a room, would your software know the coverage for that head based upon the area of the room and/or it's listing? I guess we're not there yet. I can do most of what you're doing (I think) with revit and fire, with the obvious inability to stocklist and fab. So you can just specify your required flow and pressures out of the hose valves and run a calc on the system with a pump or outside pumper? This will tell you your flow and pressure requirements? Interesting. Standpipe calc's have historically frustrated me I think because I do so much testing in the field and many don't work and the engineers (small e) always say they ran calcs. Mine seem to work fine by assigning a large K factor (50 for 500 and 25 for 250) and specifying a 100 psi residual pressure and running them either through a pump or to the building's pumper for an outside piece.
Another query... I was looking over a set of drawings (drawrings, george) prepared with hydratek for a 20 story Marriot I have to set pr spkr. and hose valves on next week for a client and it seems the program shaves off the incoming street pressure to lower the pump's discharge to keep the specified differential across a spkr. p.r. valve to a required minimal discharge pressure based upon the sprinkler flow and pressure required. Does this make sense? He's in for a big surprise once we get started. Also, it flows through both checked-off p.r. floor controls which I think is operator error. I'm just curious how other programs think, maybe it's time for a move. Tom -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Travis Mack Sent: Sunday, October 21, 2007 1:00 PM To: [email protected] Subject: RE: Sprinkler Design Software Tom: I will try to answer the questions as I think you are asking them. I use AutoSprink for the majority of my projects. >>How does your software assign individual areas of coverage to your heads within your design area (and outside for that matter)?<< I assign an area of coverage for all of the heads in the remote area. If I want different areas of coverage for individual sprinklers, then I have to manually assign that to each sprinkler. >>Does it automatically determine the centerline along the pipe between heads and branchlines and distance to walls and obstructions?<< The piping distances are included in the properties of the pipe. I have to manually figure distance to walls and such if it is atypical. Hydratec has a tool that will assign the area to a sprinkler by picking the walls and adjacent heads. >>Does it assign the MRA?<< You must pick the area to be calculated. With AutoSprink, I can put multiple remote areas on the drawing and then just have it leave the most demanding area. >>Calculate actual minimum densities based upon actual areas?<< If you give it the actual area per sprinkler, it will meet the minimum density you prescribe >>Will it increase the residual to meet density?<< Yes, if I understand correctly what you are asking. >>Peaking within the network?<< I believe that automatic peaking with all of the programs only works when you have typical spacing. If you have atypical spacing, then you have to manually peak it. That is where AutoSprink is really nice. I just put 6 or so remote areas on the grid and tell it to keep the most demanding. I can show the others as a "proof calc" >>How about standpipe hydraulics? Are you (like me) faking a valve into thinking it's a head?<< In AutoSprink, I just set the hydraulic properties of the valve to 100 psi at 250 gpm. I don't need to create an arbitrary K-factor. AS is also very nice when you have factory set pressure reducing valves. I can set up "check point gauges" and it will tell me the incoming static and residual at any point I want. This can be used to provide the factory information for the valves. I hope this provides some of the answers you were looking for. Travis -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Duross Sent: Sunday, October 21, 2007 7:08 AM To: [email protected] Subject: Sprinkler Design Software I have a(some) question(s) for you third-party software users/designers (ok, layout technicians). How does your software assign individual areas of coverage to your heads within your design area (and outside for that matter)? Does it automatically determine the centerline along the pipe between heads and branchlines and distance to walls and obstructions? I've been doing it manually for years now and it's an arduous task and I'm wondering if any design packages have designed an automatic method for this. Does it assign the MRA? Calculate actual minimum densities based upon actual areas? Will it increase the residual to meet density? Peaking within the network? Same question for the spacings and 1.2 square root rule. How about standpipe hydraulics? Are you (like me) faking a valve into thinking it's a head? I'm just kinda tired of having to determine all this stuff manually, we knocked this around over a year ago but software is constantly improving so I thought I'd bring it up again. Besides, it's kinda quiet around here. Tom Duross Go Red Sox!!! Vanilla CAD and Fire _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) __________ NOD32 2604 (20071019) Information __________ This message was checked by NOD32 antivirus system. http://www.eset.com _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
