Statutes, codes, and regulations
Maine Administrative Code
Department 16 - DEPARTMENT OF PUBLIC SAFETYDivision 642 - BUREAU OF BUILDING CODES AND STANDARDS
Chapter 5 - MAINE UNIFORM BUILDING AND ENERGY CODE AND MAINE UNIFORM BUILDING CODE - RESIDENTIAL BUILDING CODE FOR ONE AND TWO-FAMILY DWELLINGS IN MAINE
Section 642-5-5 - REVISIONS TO THE IRC

16- 642 C.M.R. ch. 5, § 5

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Current through 2024-51, December 18, 2024
Section 642-5-5 - REVISIONS TO THE IRC

The following additions, insertions, deletions, and other changes are hereby made to the 2015 International Residential Code:

1. Generally all sections

Delete "International Mechanical Code"

Insert "applicable state codes and statues"

2. Section R101.1

Delete [NAME OF JURISDICTION]; and

Insert "State of Maine" in its place.

3. Section R101.2

Delete under Exception: "complying with the requirements of Section 419 of the International Building Code"

Delete under Exception: "fire suppression required by Section 419.5 of the International Building Code when constructed under the International Residential Code for one and two-family dwellings shall conform to Section 903.3.1.3 of the International Building Code."

Delete exception 1 in its entirety

Insert "Live work units as defined in the International Building Code shall be permitted and constructed in accordance with The International Residential Code for One and Two Family Dwellings."

Delete Exception 2 in its entirety

Insert "One and two family dwellings that house more than 3 outsiders in rented rooms shall be considered an R-1 use group. One and two family dwellings housing 3 or less outsiders in rented rooms shall be permitted and constructed in accordance with The International Residential Code for One and Two Family Dwellings."

4. Section R102.2.1

Insert "No provisions of the MUBEC or MUBC shall be construed to prohibit the adoption or enforcement of an ordinance of any political subdivision that sets forth provisions for local enforcement of building codes. Such ordinances may include items such as, permits, permit fees, boards of appeals and violations."

5. Section R102.7

Delete "International Property Maintenance Code or the International Fire Code"; and

Insert "NFPA #1; Fire and Safety Codes and standards adopted pursuant to Title 25, M.R.S. §§2452 and 2465 " in its place.

6. Section R103

Delete Section R103 'Department of Building Safety' in its entirety, without substitution.

7. Section R104.8

Delete all language in Section R104.8; and

Insert "See 14 M.R.S. §8101 " in its place.

8. Section R105.1

Insert "where required by municipal ordinance." at the end of the paragraph.

9. Section R105.3

Delete "department of building safety" in the first paragraph; and

Insert "municipality" in its place.

10. Section R105.3.1

Delete "within a reasonable time after filing"

Insert "in accordance with 30A M.R.S. §4103 "

11. Section R105.3.1.1

Delete "finding shall be provided to the board of appeals for a determination of substantial damage. Applications determined by the bar of appeals to constitute substantial improvement or substantial damage"; and

Insert "Building Official" in its place.

12. Section R108

Delete Section R108 "Fees" in its entirety, without substitution.

13. Sections R112 and R113

Delete Section R112 "Board of Appeals" and Section R113 "Violations" in their entirety, without substitution.

14. Section R202

Delete "Conditioned space: Fore energy purposes, space within a building that is provided with heating and/or cooling equipment of systems capable of maintaining, through design or heat loss/gain 50° F (10° C) during the heating season and 85° F (29° C) during the cooling season, or communicates directly with a conditioned space. For mechanical purposed, an area, room or space being heated or cooled by any equipment or appliance"

Insert "An area or room within a building being heated or cooled, containing un-insulated ducts, or with a fixed opening directly into an adjacent conditioned space." in its place.

15. Section 302.2

Delete Section 302.2 in its entirety

Insert Section 302.2 as follows:

Townhouses. Common walls separating townhouses shall be assigned a fire resistance rating in accordance with section R302.2, item 1,2 or 3. The common wall shared by two townhouses shall be constructed without plumbing or mechanical equipment, ducts or vents in the cavity of the common wall. The wall shall be rated for fire exposure from both sides and shall extend to and be tight against exterior walls and the underside of the roof sheathing.

A. Where a fire sprinkler in accordance with NFPA 13D is provided the common wall shall be not less than a 2- hour fire resistance rated wall assembly tested in accordance with ASTM E 119 or UL 263.
B. Where a fire sprinkler is not provided the common wall shall not be less than a 2-hour fire resistance rated wall assembly tested in accordance with ASTM E 119 or UL 263 and meeting the requirements of NFPA 221 as a fire wall.
C. Where a fire sprinkler in accordance with section NFPA 13R is provided the common wall shall be not less than a 1- hour fire resistance rated wall assembly tested in accordance with ASTM E 119 or UL 263.
16. Section 302.12

Delete Section R 302.12 in its entirety

Insert Section R302.12 as follows:

Draftstopping shall be provided in one and two residential family combustible lightweight assembly construction where there are concealed voids or interstitial spaces above or below a floor/ceiling assembly components; such as but not limited to attics, mansards, overhangs or other concealed spaces. Draftstops shall be installed so that the area of any concealed or void space does not exceed 500 sq.ft. Draftstops shall be installed so that the area of any concealed space is divided into approximately equal areas. Draftstopping shall be installed above, and in line with, sleeping unit and dwelling unit separation walls that do not extend to the underside of the roof sheathing above. Where the assembly is enclosed by a floor membrane above and a ceiling membrane below, draftstopping shall be provided in floor/ceiling assemblies under the following circumstances:

A. Ceiling is suspended under the floor framing
B. Floor framing is constructed of truss-type open-web or perforated members

Exceptions:

A. Where corridor walls provide a sleeping unit or dwelling unit separation, draftstopping shall only be required above one of the corridor walls.
B. Draftstopping is not required in buildings equipped throughout with an automatic sprinkler system in accordance with IBC Section 903.3.1.1.
C. Draftstopping is not required in buildings equipped throughout with an automatic sprinkler system in accordance with IBC Section 903.3.1.2 provided that automatic sprinklers are also installed in the combustible concealed space, where the draftstopping is being omitted.
17. Section R310.1, Exception

Insert "if the dwelling unit is protected throughout by an approved automatic sprinkler system in accordance with R313." at the end of the exception.

18. Section R310.2.1

Delete "Exception: Grade floor openings shall have a minimum net clear opening of 5 square feet (0.465 m2)."

19. Section 310.2.3

Insert "window wells shall be maintained free and clear at all times"

20. Section R313.2

Delete Section R313.2 in its entirety.

21. Section: Table M1507.3

Delete Table M1507.3.3(1) and M1507.3.3(2);and

Insert See ASHRAE 62.2 - 2007 edition; Table 5.1 and 5.2

16- 642 C.M.R. ch. 5, § 5