I have checked the capacities in the software vs the old way of 21'-0 of
pipe and found them to be accurate. So I feel if I can ask it to perform
hydraulic calculations and trust they are right, I believe I can highlight
the pipe and ask it for volumes and get on to the next project. 

Or we could do everything the old way, if all of the questions and responses
were mailed instead of emailed the postal service wouldn't be hurting
anymore. Just saying :).

Bobby Gillett
Sr. Project Manager
Key Fire Protection, Inc.
(731) 424-0130 office  (731) 424-9285 fax 
(731) 267-4853 cell
www.keyfireprotection.com
 

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Steve
Mackinnon
Sent: Wednesday, April 04, 2012 12:58 PM
To: [email protected]; [email protected]
Subject: RE: Today's Challenge question - Sizing Air compressors

I've worked with most software's, and have found doing the old fashion way
to work best. Time to break out the calculator and yellow tape! Just
saying:) 

Steven MacKinnon
Senior Fire Protection Engineer
Hartcorn Plumbing & Heating Inc.
850 South 2nd Street
Ronkonkoma, NY 11779
631-580-2300 - Office
631-580-1090 - Fax
[email protected]
 
 

-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Bobby Gillett
Sent: Wednesday, April 04, 2012 1:47 PM
To: [email protected]; [email protected]
Subject: RE: Today's Challenge question - Sizing Air compressors

With MEPCAD (AutoSPRINK) we can set each piece of pipe to be wet or dry;
then you select the pipe and ask it to show pipe volumes. It will only show
the volumes of the selected pipe and will separate wet and dry. To be sure
you have all of the pipe set right, simply select all that is supposed to be
dry and it should show only dry volume and vice versa for wet.

So easy and nice.


Bobby Gillett
Sr. Project Manager
Key Fire Protection, Inc.
(731) 424-0130 office  (731) 424-9285 fax 
(731) 267-4853 cell
www.keyfireprotection.com
 
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Bob
Sent: Wednesday, April 04, 2012 12:21 PM
To: [email protected]
Subject: RE: Today's Challenge question - Sizing Air compressors

B.  Always size to the actual system pipe volume.  This will be different
from the gpm required in the calc, and I have found with both SprinkCAD and
HydraCAD (don't know about MEPCAD or any others since I haven't worked with
em) that the system volume given needs to be checked.  They both provide an
answer, but not necessarily always an accurate one.

Bob Knight, CET III
208-318-3057
www.firebyknight.com



-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of
[email protected]
Sent: Wednesday, April 04, 2012 6:39 AM
To: [email protected]
Subject: Today's Challenge question - Sizing Air compressors

Ok, so for today here it is:

When sizing a system air compressor for a dry or preaction system you size
it based on:

(a) the volume that is shown on the hydraulic calculation provides,

(b) a takeoff of the piping and determine volume of the entire system from
the end head back to the system valve.

Craig L. Prahl, CET   
Fire Protection 
CH2MHILL
Lockwood Greene
1500 International Drive
Spartanburg, SCĀ  29304-0491
Direct - 864.599.4102
Fax - 864.599.8439
CH2MHILL Extension  74102
[email protected]

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