But doesn’t the 70% rule apply to obstructed and unobstructed types of
construction (bar joists)? That's vertical
Cliff Whitfield, SET
President
Fire Design, Inc.
184 Comfort Place
Burnsville, NC 28714
Ph: 828-284-4772
[email protected]
www.fire-design.com
-----Original Message-----
From: Sprinklerforum [mailto:[email protected]]
On Behalf Of Travis Mack, SET
Sent: Friday, February 3, 2017 3:45 PM
To: [email protected]
Subject: Re: Obstruction to Pattern Development, Seriously ??
The only issue may be pattern development. With a grated floor, there is
nothing that will prevent pattern development. With the wire mesh in the
wall, it may affect pattern development. So, if it doesn't continue to at
least 18" below the deflector in the vertical plane, you may not be
comparing apples to oranges when using the same thinking of grated flooring.
Travis Mack, SET
MFP Design, LLC
2508 E Lodgepole Drive
Gilbert, AZ 85298
480-505-9271
fax: 866-430-6107
email:[email protected]
http://www.mfpdesign.com
https://www.facebook.com/pages/MFP-Design-LLC/92218417692
Send large files to us via: https://www.hightail.com/u/MFPDesign
LinkedIn: https://www.linkedin.com/in/travismack
On 2/3/2017 1:38 PM, Brian Harris wrote:
Cliff-
Thank you.
Brian Harris, CET
BVS Systems Inc.
bvssytemsinc.com
-----Original Message-----
From: Sprinklerforum
[mailto:[email protected]] On Behalf Of
Cliff Whitfield
Sent: Friday, February 03, 2017 3:36 PM
To: [email protected]
Subject: RE: Obstruction to Pattern Development, Seriously ??
Brian,
I believe if you can apply the 70% open rule to mezzanines, the same would
hold true for an obstruction in the vertical plane if it's 70% open. You
might look into that thinking.
It's late in the day and my brain is a little fried so I may be way off in
my thinking.
Cliff Whitfield, SET
President
Fire Design, Inc.
184 Comfort Place
Burnsville, NC 28714
Ph: 828-284-4772
[email protected]
www.fire-design.com
-----Original Message-----
From: Sprinklerforum
[mailto:[email protected]]
On Behalf Of Brian Harris
Sent: Friday, February 3, 2017 3:28 PM
To: [email protected]
Subject: RE: Obstruction to Pattern Development, Seriously ??
Mark-
The divider goes from floor to ceiling (open to structure). My first
thoughts too were the hospital curtain theory even though that's for LH
only. If heads were on both sides of this thing they would "cold solder"
each other if they ever went off.
Brian Harris, CET
BVS Systems Inc.
bvssytemsinc.com
-----Original Message-----
From: Sprinklerforum
[mailto:[email protected]]
On Behalf Of Mark Phillips
Sent: Friday, February 03, 2017 3:24 PM
To: [email protected]
Subject: Re: Obstruction to Pattern Development, Seriously ??
How far down from the ceiling/ deck does the divider go?
Could be similar to the hospital curtain rule exception Sorry don't
have a NFPA 13 code book handy
Sent from my Verizon 4G LTE Droid
On Feb 3, 2017 3:05 PM, Brian Harris <[email protected]> wrote:
I am working on a project that the owner wants to install a wire mesh
divider. The screen is made out of 0.188" dia. wire in a 2" square pattern.
I'm saying heads are not required on both sides but I'm getting push back
from the engineer reviewing the plans. What say ye?
Brian Harris, CET
BVS Systems Inc.
Design Manager
bvssystemsinc.com<http://bvssystemsinc.com/>
Phone: 704.896.9989
Fax: 704.896.1935
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