I like this idea. I made a simple Excel spreadsheet that does the simplified calc method from 13D. That method being so simple that it probably takes more time to input the data into the spreadsheet than to do it by hand but at least the computer doesn't make arithmetic errors like I do. I suspect it wouldn't be too hard to develop a matrix that produced a multiplier either from a tabular base or by doing a Hazen-Williams equation shouldn't be too hard. I suspect that a lot of the commercial stand alone programs available are based on Excel. But then again I'm not a computer guy so maybe I'm all wet.
On 7/26/07, Paul Sincaglia <[EMAIL PROTECTED]> wrote:
Just a random thought in this regard. For years we have all been essentially stuck using either old hand calc methods (nothing wrong with them...just limited in what can be done easily/practically) or using one of the commercial software packages. Since the calculation principals (required input and output) are the same for all of us (NFPA 13 specific requirements), maybe it is time for someone (NFPA, ASFA, NFSA, SFPE et al.) to sponsor the development of an "open source" hydraulics package that we can all use and improve as our collective needs change. It is more than technically feasible today....and would certainly help the industry as a whole..save the current hydraulic software vendors. Just a thought. Paul -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jimmy Waite Sent: Thursday, July 26, 2007 10:27 AM To: [email protected] Subject: RE: Friction Loss Brian, When I first learned to do calcs by hand I used a book by Robert Gagnon called "Design of Water-Based Fire Protection Systems." It was a text book for one of my college classes, but the back of the book contains friction loss tables for everything from steel, copper, Ductile Iron, PVC, and even cement lined. Jimmy Waite [EMAIL PROTECTED] -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Brian Harris Sent: Wednesday, July 25, 2007 1:35 PM To: [email protected] Subject: Friction Loss What is the easiest way to figure friction loss when doing hydraulic calc's by hand? I know the formula that's in the book but I was hoping there might be a reference chart or something you could use instead. I have a "Construction Master 5" calculator for working with feet and inches but it's not set up to do compound formulas like the Hazen-Williams, sure would hate to have to buy another one just to do formulas....... _______________________________________________ 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)
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