Current through Register Vol. 49, No. 13, September 23, 2024
Subpart
1.
IBC [F] section 905.2.1.
IBC [F] section 905.2 is amended by adding subsections to read
as follows:
905.2.1
Modification
to standards. In buildings other than high rise that are equipped
throughout with an automatic sprinkler system installed in accordance with
Sections 903.3.1.1 or 903.3.1.2, and a Class I standpipe system, the pipe shall
be sized to meet the pressure and flow requirements for the sprinkler system.
Such systems shall comply with Sections 905.2.1.1 through 905.2.1.4:
905.2.1.1
System pipe size. Pipe
sizes for combined portions of the sprinkler and standpipe systems shall not be
less than four inches (101.6 mm).
905.2.1.2
System design flow and
pressure. The standpipe shall provide a minimum pressure of 100 psi (6.9
bar) at the uppermost outlet and a minimum flow rate of 250 gpm (946 L/min) at
the two hydraulically most remote hose connections on the standpipe when the
standpipe system is supported through the fire department connection. The
hydraulic calculations shall be performed between the hydraulically most
demanding standpipe hose connection and the fire department
connection.
905.2.1.3
Design
pressure. A maximum design pressure of 150 psi (10.3 bars) is permitted
at the fire department connection when the standpipe is supported by local fire
department apparatus.
905.2.1.4
Automatic sprinkler system demand. The automatic sprinkler system
demand, including the inside and outside hose stream demands from NFPA 13, is
to be provided by the municipal water supply system without requiring fire
department pumping into the system.
Subp. 1a.
IBC [F] section 905.3.
IBC [F] section 905.3 is amended to read as follows:
905.3
Required installations.
Standpipe systems shall be installed where required by Sections 905.3.1
through 905.3.10. Standpipe systems are allowed to be combined with automatic
sprinkler systems.
Exception: Standpipe systems are not required in
Group R-3 occupancies.
Subp.
1b.
IBC [F] section 905.3.1.
IBC [F] section 905.3.1 is amended to read as follows:
905.3.1
Height. Class I wet
standpipe systems shall be installed throughout buildings where any of the
following conditions exist:
1. Four or more
stories are above or below grade plane.
2. The floor level of the highest story is
located > 30 feet (9144 mm) above the lowest level of the fire department
vehicle access.
3. The floor level
of the lowest story is located > 30 feet (9144 mm) below the highest level
of fire department vehicle access.
Exception: Class I manual, automatic, or
semiautomatic dry standpipes are allowed in buildings that are subject to
freezing temperatures, provided that the hose connections are located as
required for Class II standpipes in accordance with Section
905.5.
905.3.1.1
Lowest level. In determining the lowest level of fire department
vehicle access, the following areas should not be considered:
1. recessed loading docks for four vehicles
or less; and
2. areas where
topography makes access from the fire department vehicle to the building
impractical or impossible.
Subp. 2.
IBC [F] section
905.3.2.1.
IBC [F] section 905.3.2 is amended by adding a subsection to
read as follows:
905.3.2.1
Group A exhibition. Class I automatic standpipes shall be provided in
Group A-3 Occupancies where the floor area used for exhibition exceeds 12,000
square feet (1115 m2).
Subp. 3.
IBC [F] sections 905.3.4 and
905.3.4.1.
IBC [F] sections 905.3.4 and 905.3.4.1 are deleted and replaced
with the following:
905.3.4
Stages. Stages are not required to be equipped with standpipe
systems.
Subp. 4.
[Repealed, 44 SR 609 effective 3/31/2020]
Subp.
4a.
IBC [F] section 905.3.6.
IBC [F] section 905.3.6 is amended to read as follows:
905.3.6
Helistops and heliports.
Each building with a rooftop helistop or heliport shall be equipped with
a Class I standpipe system extended to the roof level on which the helistop or
heliport is located in accordance with Section 2007.5 of the International Fire
Code.
Subp. 5.
[Repealed, 44 SR 609 effective 3/31/2020]
Subp.
6.
IBC [F] section 905.3.9.
IBC [F] section 905.3 is amended by adding a subsection to read
as follows:
905.3.9
Detention
and correctional facilities. Regardless of the height of the building or
number of stories, every building in a Group I-3 detention and correctional
facility, where 50 or more persons are under restraint or security under
Occupancy Condition 3, 4 or 5, shall be provided with a Class I automatic wet
or semiautomatic dry standpipe system.
Exception: Combined systems meeting the provisions
of Section 905.2 may be used.
When acceptable to the fire chief, fire department connections
may be located inside all security walls or fences on the property.
Standpipes shall be located in accordance with Section 905. In
addition, standpipes shall be located so that it will not be necessary to
extend hose lines through smoke barriers. When located in cell complexes,
standpipes may be located in secured pipe chases.
Subp. 6a.
IBC [F] section
905.3.10..
IBC [F] section 905.3 is amended by adding a subsection to read
as follows:
905.3.10
Group R-2
occupancies small hose connections. Small hose connections shall be
installed in Group R-2 occupancies three or more stories in height where any
portion of the buildings interior area is > 200 feet (60,960 mm) of travel,
vertically or horizontally, from the nearest point of fire department vehicle
access. Small hose connections required by this section shall comply with the
following:
1. Supply one 1-1/2-inch (38-mm)
fire hose valve at each floor level or intermediate stair landing in each
required and enclosed stairway.
2.
The water for the small hose connections shall be supplied separately from the
sprinkler system protecting that area so that the small hose connections are
still functional if the water supply to the sprinkler system is shut down
following fire extinguishment.
3.
The piping shall be a minimum of 1-1/2 inch (38 mm).
4. The water shall be supplied from a
wet-pipe sprinkler system only.
5.
The piping shall be comprised of metallic piping and hose valve connections.
Permanent signage shall be required which reads "Fire Department Overhaul Hose
Connection" at each connection in the building. If a separate standpipe system
is provided, a sign shall also be provided at the exterior fire department
connection.
Subp.
7.
IBC [F] section 905.5.1.
IBC [F] section 905.5.1 is deleted.
Subp. 8.
IBC [F] section 905.6.
IBC [F] section 905.6 and all subsections are deleted in their
entirety.
Statutory Authority: MS s
16B.37;
16B.59 to 16B.76;
326B.101 to
326B.194
