The Class III is for occupant use; therefore adequate pressure must be
present at all times. The Class I is for FD use and they bring the pressure
with them (fire truck). Therefore with Class I it doesn't matter if the
water supply can meet the demand; it becomes a manual standpipe.
Mark
.
Steve Leyton
Protection Design Consulting
From: [EMAIL PROTECTED] on behalf of Mark Hasenmyer
Sent: Fri 10/31/2008 6:39 AM
To: sprinklerforum@firesprinkler.org
Subject: RE: Building fails pressure test
The Class III is for occupant use; therefore adequate
It likely your simplest least expensive solution is to convert the class
III standpipe to a class I. As someone else previously stated, the
conversion is a matter of simply removing the 1 1/2 hose stations.
Barring a local code requirement, there is no need for the standpipe to be
'dry'. A
Changing to clas 1 will be less expensive than installing a pump. You should
contact a professional sprinkler company which you can find at
www.sprinklernet.org. And www.nfsa.org.
Remember, a working system is important for life and safety which is why the
fire marshal is requiring this.
If there are hoses provided for the Class III system, they may just
let you remove them. Then from the description I read, it sounds like
you would have to add a fire department connection. This would then
give you a (manual) Class I system (removing the hoses removes the
automatic water
