Administration and Purpose
Subpart 1. Administration. This code shall be administered in accordance with chapter 1300.
Subp. 2. Purpose. The purpose of this chapter is to establish a minimum code of standards for the construction, reconstruction, alteration, and repair of buildings governing matters including design and construction standards regarding heat loss control, illumination, and climate control pursuant to Minnesota Statutes, section 326B.101, 326B.106 and 326B.13.
INCORPORATION BY REFERENCE OF THE
INTERNATIONAL ENERGY CONSERVATION
CODE—COMMERCIAL ENERGY PROVISIONS
The 2012 edition of the International Energy Conservation Code (IECC) as promulgated by the International Code Council, Inc. (ICC), Washington, D.C., is incorporated by reference and made part of the Minnesota State Building Code except as qualified by the applicable provisions in Minnesota Rules, Chapter 1300, and as amended in this rule chapter. Portions of this publication reproduce excerpts from the 2012 IECC, International Code Council, Inc., Washington, D.C., copyright 2012, reproduced with permission, all rights reserved. The IECC is not subject to frequent change, and a copy of the IECC, with amendments for use in Minnesota, is available in the office of the commissioner of labor and industry.
The commercial provisions of the 2012 IECC-CE chapters 2 (CE) to 5 (CE) , shall be administered by any municipality that has adopted the code, except as qualified by the applicable provisions in Minnesota Rules, Chapter 1300, and as amended by this rule chapter.
The following 2012 IECC chapter is being deleted and replaced with the provisions listed below:
References to Chapter 1 (RE) of the 2012 IECC and any references to code administration in this code are deleted and replaced with Minnesota Rules, Chapter 1300, Administration of the State Building Code.
REFERENCES TO OTHER
INTERNATIONAL CODE COUNCIL (ICC) CODES
References to other codes and standards promulgated by the ICC in the IECC are modified in subparts 2 to 11.
References to the International Building Code in this code mean the Minnesota Building Code, Minnesota Rules, Chapter 1305, adopted pursuant to Minnesota Statutes, Section 326B.106, subdivision 1.
References to the International Residential Code in this code mean the Minnesota Residential Code, Minnesota Rules, Chapter 1309, adopted pursuant to Minnesota Statutes, Section 326B.106, subdivision 1.
References to the International Code Council, Electrical Code in this code mean the Minnesota Electrical Code, Minnesota Rules, Chapter 1315, adopted pursuant to Minnesota Statutes, Section 326B.35.
References to the International Fuel Gas Code in this code mean the Minnesota Fuel Gas Code, Minnesota Rules, Chapter 1346, adopted pursuant to Minnesota Statutes, Section 326B.106, subdivision 1.
References to the International Mechanical Code in this code mean the Minnesota Mechanical Code, Minnesota Rules, Chapter 1346, adopted pursuant to Minnesota Statutes, Section 326B.106, subdivision 1.
References to the International Plumbing Code in this code mean the Minnesota Plumbing Code, Minnesota Rules, Chapter 4715, or its successor, adopted pursuant to Minnesota Statutes, Section 326B.106, subdivisions 1 and 2.
References to the International Private Sewage Disposal Code in this code mean the Minnesota Pollution Control Agency's minimum standards and criteria for individual sewage treatment systems in Minnesota Rules, Chapter 7080, adopted pursuant to Minnesota Statutes, Chapters 103F, 103G, 115, and 116.
References to the International Energy Conservation Code in this code mean the Minnesota Energy Code, Minnesota Rules, Chapters 1322 and 1323, adopted pursuant to Minnesota Statutes, Section 326B.106.
References to the International Property Maintenance Code in this code do not apply and are deleted.
References to accessibility in this code mean the Minnesota Accessibility Code, Minnesota Rules, chapter 1341.
ADMINISTRATIVE PROCEDURE CRITERIA
Procedures relating to the administration and enforcement of this code under Minnesota Statutes, Section 326B.101, are contained in Minnesota Rules, Chapter 1300, Minnesota Administration Code, which govern the application of this code.
FOR COMMERCIAL ENERGY CODE
In addition to the requirements in Minnesota Rules, part 1323.0030, the administrative provisions in this part apply.
This code applies to commercial buildings, building sites, and the associated systems and equipment.
Additions, alterations, renovations, or repairs to an existing building, building system, or portion thereof shall conform to this code as they relate to new construction without requiring the unaltered portion(s) of the existing building or building system to comply with this code. Additions, alterations, renovations, or repairs shall not create an unsafe or hazardous condition or overload existing building systems. An addition shall be deemed to comply with this code if the addition alone complies or if the existing building and addition comply with this code as a single building.
- Storm windows installed over existing fenestration.
- Glass-only replacements in an existing sash and frame.
- Existing ceiling, wall, or floor cavities exposed during construction, provided that these cavities are filled with insulation.
- Construction where the existing roof, wall, or floor cavity is not exposed.
- Reroofing for roofs not covered by Section C402.2.1.2, where neither the sheathing nor the insulation is exposed. Roofs without insulation in the cavity and where the sheathing or insulation is exposed during reroofing shall be insulated either above or below the sheathing.
- Replacement of existing doors that separate conditioned space from the exterior shall not require the installation of a vestibule or revolving door, provided, however, that an existing vestibule that separates a conditioned space from the exterior shall not be removed.
- Alterations that replace less than 50 percent of the luminaires in a space, provided that such alterations do not increase the installed interior lighting power.
- Alterations that replace only the bulb and ballast within the existing luminaires in a space, provided that the alteration does not increase the installed interior lighting power.
Spaces undergoing a change in occupancy that would result in an increase in demand for either fossil fuel or electrical energy shall comply with this code. Where the use in a space changes from one use in Table C405.5.2(1) or (2) to another use in Table C405.5.2(1) or (2) , the installed lighting wattage shall comply with section C405.5.
Any nonconditioned space that is altered to become conditioned space shall be required to be brought into full compliance with this code.
Residential buildings shall meet the provisions of IECC—Residential Provisions (RE). Commercial buildings shall meet the provisions of IECC—Commercial Provisions (CE).
Where a building includes both residential and commercial occupancies, each occupancy shall be separately considered and meet the applicable provisions of IECC—Commercial Provisions or IECC—Residential Provisions.
The building official is authorized to approve specific computer software, worksheets, compliance manuals, and other similar materials that meet the intent of this code.
The following buildings, or portions thereof, separated from the remainder of the building by building thermal envelope assemblies complying with this code shall be exempt from the building thermal envelope provisions of this code:
- Those with a peak design rate of energy usage less than 3.4 Btu/h-ft2 (10.7 W/m2) or 1.0 watt/ft2 (10.7 W/m2) of floor area for space conditioning purposes.
- Those that do not contain conditioned space.
Construction documents shall be drawn to scale on suitable material. Electronic media documents are permitted to be submitted when approved by the building official. Construction documents shall indicate the location, nature, and extent of the work proposed, and show in detail pertinent data and features of the building, systems, and equipment as governed in this code. Examples of this detail include insulation materials and their R-values; fenestration U-factors and SHGCs; area-weighted U-factor and SHGC calculations; mechanical system design criteria; mechanical and service water heating system and equipment types, sizes, and efficiencies; economizer description; equipment and systems controls; fan motor horsepower (hp) and controls; duct sealing, duct sizing, duct and pipe insulation and location, terminal air or water design flow rates; electrical distribution diagram(s); lighting fixture schedule with wattage and control narrative; and air sealing details. Air sealing details shall clearly delineate the air barrier location and show continuity between roof, wall, foundation, around frames and sleeves, and at other similar openings.