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903.3.1.6 Modifications to Sprinkler Standards

Minnesota Building Code 2015 > 9 Fire Protection Systems > 903 Automatic Sprinkler Systems > 903.3 Installation Requirements > 903.3.1 Standards > 903.3.1.6 Modifications to Sprinkler Standards

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The sprinkler installation standards as referenced in Sections 903.3.1.1, 903.3.1.2, and 903.3.1.3.are modified as follows:

903.3.1.6.1 Hose Stream Requirements

When, in the opinion of the fire chief, an adequate alternate water supply for hose stream requirements is provided or available, the water supply requirements for the sprinkler system hose stream demands may be modified.

903.3.1.6.2

(Repealed).

903.3.1.6.3 Swimming Pools

Sprinkler protection need not be provided on the ceiling of rooms containing swimming pools when the pool area is used exclusively for swimming purposes and when sprinklers are provided around the perimeter of the pool area.

903.3.1.6.4 NFPA 13 Modifications

8.15.8.2 Linen closets and pantries.
Sprinklers are not required in linen closets and pantries within dwelling units that meet the following conditions:

The area of the space does not exceed 12 square feet (1.1 m²);
the least dimension does not exceed 3 feet (0.9 m);
the walls and materials are surfaced with noncombustible or limited combustible materials; and
the closet or pantry contains no mechanical equipment, electrical equipment, or electrical appliances.

8.17.2.5 Valves.

8.17.2.5.1 Fire department connection.
A listed check valve shall be installed in each fire department connection.

8.17.2.5.1.1 Maximum pipe length.
There shall be a maximum of 25 feet (7.6 m) of pipe between the check valve and the fire department connection inlet.

Exception: This maximum shall not apply to the check valve serving a free-standing fire department connection.

8.17.2.5.1.2 Check valve location.
The check valve shall be located to minimize freezing potential.

903.3.1.6.5 Vestibules

Sprinkler protection is not required in vestibules that meet all of the following conditions:

The vestibule is 225 square feet or less in floor area;
The vestibule is of noncombustible or limited combustible construction;
The vestibule has glazing allowing vision into vestibule;
The vestibule's only purpose is ingress and egress; and
The vestibule contains no fueled equipment, flammable or combustible liquids, or furniture. Incidental combustible storage in the vestibule is limited to 5 ft³ of material.