Plans and specifications. Prior to the installation of a system of
plumbing other than for a single-family dwelling, complete plans and
specifications, together with any additional information that the
building official may require, must be submitted and reviewed by the
building official or their designee prior to permits and installation.
Construction cannot proceed except in accordance with approved plans
and specifications. Any alteration, extension, or repair of an existing
system is subject to these same requirements, unless waived by the
building official in accordance with Minn. Rules 1300.0215.
Exceptions. Pursuant to Minn. Stat. § 326B.43, Subd. 2(n),
plumbing plans and specifications for the following projects must
be submitted to the Minnesota Department of Labor and Industry for
a full plan review:
Inspections. New plumbing systems or parts of existing plumbing systems
that have been altered, extended, or repaired shall be inspected,
tested, and approved by the building official or their designee in
accordance with Minn. Rules 1300.0215 before the plumbing system is
put into use. The building official shall perform the final inspection
and witness the test. The building official shall approve the plumbing
system if the system complies with the requirements of this code,
any permit requirements, and the requirements of any approved plans
and specification. Plumbing system tests shall comply with Minn. Rules
Chapter 4714.
Covering of work. No building drainage or plumbing system or part
thereof shall be covered until it has been inspected, tested, and
approved as herein prescribed.