pressure
[cid:95457595-a5eb-4fc6-92f2-ac17fbb95287]
From: Sprinklerforum on behalf
of Matthew J Willis
Sent: Saturday, March 4, 2017 5:14 PM
To: Forum
Subject: Re: Size of main service - dry parking garage -
290 is at the system. How long is the main? How
290 is at the system. How long is the main? How many offsets, etc.
There is normally a 25℅ increase or even more, due to build back.
If there are no inside hoses, then the house demand is on the underground. It
will not be flowing thru the 4".
Matt
Sent from my Verizon 4G LTE Droid
On Mar 4, 201
The dry system required flow based on the calc is approximately 290 GPM and
required pressure is 90 PSI. But I am not sure how to add the hose allowance to
find its impact on required pressure.
P.S. The building does not have a required for a standpipe and none will be
used.
Thanks for helping
And what were the results? You have solved for velocity. That is kind of a
lesser concern than available water, and amount required for system.
The only way to answer your question is to perform a full hydraulic analysis
using Elite.
R/Matt
Sent from my Verizon 4G LTE Droid
On Mar 4, 2017 2:35
Elite
On Mar 4, 2017, at 4:32 PM, Matthew J Willis
mailto:ma...@rapidfireinc.com>> wrote:
I'll ask this question, what hydraulic calculation software are you using?
Matt
Sent from my Verizon 4G LTE Droid
On Mar 4, 2017 2:28 PM, very Cool
mailto:egengin...@hotmail.com>> wrote:
Thanks for your
I'll ask this question, what hydraulic calculation software are you using?
Matt
Sent from my Verizon 4G LTE Droid
On Mar 4, 2017 2:28 PM, very Cool wrote:
Thanks for your response Art. The hydrant test shows 130 psi at 500 GPM
The parking is on ground level and the pipes wound the 10' above the
Thanks for your response Art. The hydrant test shows 130 psi at 500 GPM
The parking is on ground level and the pipes wound the 10' above the ground
floor
The new main will only serve the sprinkler with hose allowance. It does not
need to serve fire hydrant. Thanks again
On Mar 4, 2017, at 3:
>From the information presented the question can’t be answered.
To do a hydraulic analysis you need:
A water flow test near the point of the connection.
Length of the underground fire main from the connection to the riser.
Elevation of the dry system highest sprinkler.
Is there a fire hydrant s
