Because of this issue I have added a requirement to my specs for the contractor
to install a framed 11 X 17 diagram of the system with all of the valves shown
and highlighted and mount it to the wall near the riser.
David L. Miller, P.E.
Engineered Fire Protection, LLC
11920 Richcroft
Re: “tying into the roof drain in the same stairwell” - Roof drains are not
allowed within exit enclosures.
Re: NFPA 101: 7.1.3.2.1(10) (2018 edition) -
Penetrations into, and openings through, an exit enclosure assembly shall be
limited to the following:
(a) Door assemblies permitted
I seriously doubt the building code will allow you to install anything on a
roof without anchoring it down, no matter what the owner wants.
You better not be in a hurricane or tornado prone area. Hurricane wind
resistance is 140 mph in many cases.
David L. Miller, P.E.
Engineered Fire
Now that is interesting…
The wording of the code is that tie-in drains are required, but the commentary
says they should be avoided if possible.
The 2022 edition (16.10.5.3.6) has the same wording in both the code and the
commentary.
David L. Miller, P.E.
Engineered Fire
NFPA 13 (2016 edition) 8.16.2.5.3.6 Tie-in drains shall be provided for
multiple adjacent trapped branch pipes and shall be only 1 in. (25 mm). Tie-in
drain lines shall be pitched a minimum of 1⁄2 in. per 10 ft (4 mm/m).
David L. Miller, P.E.
Engineered Fire Protection, LLC
11920 Richcroft
The only thing I can think of that might come close to applying would be 9.2.11
(2022 Edition) “Equipment Enclosures. Sprinkler shall not be required to be
installed within electrical equipment, mechanical equipment, or air handling
units not intended for occupancy.”
However, I do not
Excellent. That is exactly the interpretation I was hoping for.
Thank you for the information.
David L. Miller, P.E.
Engineered Fire Protection, LLC
11920 Richcroft Avenue
Baton Rouge, Louisiana 70814
225-273-5040
From: Jones, William - Fire Plans Examiner/Inspector
Sent:
How does one handle a Rooftop Deck with a Pergola?
The adopted version of NFPA 13 the 2016 edition.
The pergola is, of course, combustible construction with joists 18" - 24"
on-center, but there is no actual ceiling/roof. Technically, it is an
"exterior projection off of the adjacent
As per usual, I am dealing with a rather unusual project. I am assisting,
pretty much after-the-design, in obtaining approval of a system for
protecting palletized plastic pellets in gigantic bags to a height of 14'
under a roof with a slope of approximately 4:12. Of course, this slope
exceeds
