2009 RESIDENTIAL CODE COMPLETE UPDATE4 HOURS TECHNICAL

ALL CLASSIFICATIONSCOURSE NUMBER 16077

LARRY LEHMAN, KEVIN KALAKAYDAN O’DONNELL, AND BOB KONYNDYKINSTRUCTOR NO.’s 300, 1378, 1681, 008

EFFECTIVE DATE: March 9, 2011

2

R101.2 Scope

• Detached 1 & 2 Family Dwellings

• Townhouses not more than 3 stories above grade plane with a separate means of egress

• Their accessory structures

• Live/ work units complying with sec. 419 of MBC

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80.1 Scope Michigan Electrical Code Rules Part 8

• The code regulates the design, installation, maintenance, alteration, and inspection of electrical systems including all wiring, fixtures, appliances, and appurtenances in connection with the utilization of electrical energy, within or on a building, structure, or properties, and including service entrance wiring as defined by the code.

• Exception: Electrical wiring and equipment within 1- and 2-family dwellings shall be constructed, installed, and maintained in accordance with the Michigan residential code.

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Electrical Code Advisory

• Evaluate every code section and compare the intent with the National Electrical Code

• Include sections from the NEC that are not in the Michigan Residential Code

• Appendix Q

• Proposals

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E3401.3 Not Covered

Not covered. Chapters 34 to 43 do not cover the following:

(1) Installations including associated lighting under the exclusive control of communications utilities and electric utilities.(2) Services over 400 amperes.

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E3402.2 Penetration of Rated Walls

Penetrations of fire-resistance-rated assemblies. Electrical installations in hollow spaces, vertical shafts, and ventilation or air-handling ducts shall be made so that the possible spread of fire or products of combustion will not be substantially increased. Electrical penetrations through fire-resistance-rated walls, partitions, floors, or ceilings shall be protected by approved methods to maintain the fire-resistance-rating of the element penetrated. Penetrations of fire-resistance-rated walls shall be limited as specified in Section 317.3 R302.4.

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E3403.3 Listing and Labeling

• Listed or labeled equipment shall be installed and used in accordance with any instructions included in the listing or labeling.

• (Deleted IRC wording replaced with NEC wording)

• Electrical materials, components, devices, fixtures and equipment shall be listed for the application, shall bear the label of an approved agency and shall be installed, and used, or both, in accordance with the manufacturer's installation instructions.

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E3405.4 Working Space

Location of working spaces and equipment. Required working space shall not be designated used for storage. Panelboards and overcurrent protection devices shall not be located in clothes closets, in bathrooms, or over steps of a stairway.

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E3406.7 Conductors of Same Circuit

Conductors of the same circuit. All conductors of the same circuit and, where used, the grounded conductor and all equipment grounding conductors and bonding conductors shall be contained within the same raceway, trench, cable, or cord.

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E3407.5 Polarity

Polarity of connections. No grounded conductor shall be attached to any terminal or lead so as to reverse the designated polarity.

(Added this section from NEC 200.11)

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E3601.6.3 Space Conditioning Equipment

Separate outdoor electric space conditioning equipment. A service disconnect for separately metered outdoor electric space conditioning equipment may be located immediately adjacent to the outdoor meter cabinet. A permanent plaque or directory shall be installed at each service disconnect location denoting the other services, feeders, and branch circuits supplying a building or structure and area served by each service, feeder, and branch circuit.

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Electric Vehicle Charging

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E3601.6.4 Electric Vehicle Charging

Electric vehicle charging system service disconnect. A separate disconnect for electric vehicle charging systems shall be permitted. The disconnect shall be located immediately adjacent to the outdoor meter cabinet. A permanent plaque or directory shall be installed at each service disconnect location identifying the other services, feeders, and branch circuits supplying a building or structure and area served by each service, feeder, and branch circuit. The disconnect shall not be required to be grouped with the service disconnects for the structure.

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E3601.6.4 Electric Vehicle Charging (con’t)

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E3601.6.4 Electric Vehicle Charging (con’t)

Option 1

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E3601.6.4 Electric Vehicle Charging (con’t)

Option 2

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E3601.6.4 Electric Vehicle Charging (con’t)

Option 3

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E3601.6.4 Electric Vehicle Charging (con’t)

Option 4

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E3607.3 Grounding for Buildings Supplied by Feeders

For other than existing wiring systems, the code no longer permits feeders or branch circuits without an equipment grounding conductor to serve separate buildings.

• E3607.3 Buildings or Structures Supplied by Feeder(s) or Branch Circuit(s).

• E3607.3.1 Equipment Grounding Conductor.• E3607.3.2 Grounded Conductor, Existing Premises.

Previously, the code permitted the common practice of installing a three-wire feeder to a detached accessory building without an equipment grounding conductor. In effect, the grounded conductor also served as the grounding conductor. Except for existing wiring systems, this practice is no longer allowed.

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E3607.3 Grounding for Buildings Supplied by Feeders (con’t)

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E3608.1 Grounding Electrodes

For concrete-encased electrodes, the code clarifies the location of horizontal and vertical installations and stipulates that only one such electrode needs to be connected to the grounding electrode system. The provisions for rod and pipe electrodes have been revised to clarify the material, dimensions, and listing requirements. A new section recognizes other listed grounding electrodes.

• E3608.1.2 Concrete-Encased Electrode

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E3608.1 Grounding Electrodes (con’t)

• E3608.1.4 Rod and Pipe Electrodes. Rod and pipe electrodes not less than 8 feet in length and consisting of the following materials shall be considered as a grounding electrode.

• E3608.1.6 Other Electrodes. In addition to the grounding electrodes specified in Sections E3608.1.1 through E3608.1.5 other listed grounding electrodes shall be permitted.

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E3609.3 Intersystem Bonding Termination

Bonding terminations for communications, satellite, and cable television grounding conductors are now required in one of three prescribed and accessible locations.

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E3609.7 Bonding Metal Piping

Bonding other metal piping. Where installed in or attached to a building or structure, a metal piping system, including gas piping, capable of becoming energized shall be bonded to the service equipment enclosure, the grounded conductor at the service, the grounding electrode conductor where of sufficient size, or to the 1 or more grounding electrodes used.

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E3609.7.1 Bonding Metal Piping (con’t)

Other than corrugated stainless steel tubing (CSST). The bonding jumper shall be sized in accordance with table 3908.12 using the rating of the circuit capable of energizing the piping. The equipment grounding conductor for the circuit that is capable of energizing the piping may serve as the bonding means.

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• CSST • Corrugated Stainless• Steel Tubing• Bonding Concerns with

Flexible Metal Gas Piping• There have been lawsuits

due to fires with CSST gas piping systems and the major concern is the proper bonding of these systems and lightning. Gastite has issued a Technical Bulletin and requires bonding in excess of current NEC requirements.

E3609.7.1 Bonding Metal Piping (con’t)

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E3609.7.1 Bonding Metal Piping (con’t)

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E3609.7.1 Bonding Metal Piping (con’t)

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E3609.7.2 Bonding Metal Piping (con’t)

Corrugated stainless steel tubing (CSST). Corrugated stainless steel tubing gas piping systems shall be bonded by connection to a metallic piping segment or fitting, either outside or inside the building, between the individual gas meter and the first CSST fitting. The bonding jumper shall be sized in accordance with Table E3603.1 based on the size of the service-entrance conductor or feeder supplying each occupancy and as permitted in Table E3603.1 note (d) but not smaller than 6 American Wire Gauge (AWG) copper (or equivalent).

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E3705.7 Location of Overcurrent Devices

• E3705.7 Location of Overcurrent Devices in or on Premises.

5. Not be located over steps of a stairway.

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E3803.6 Raceway Seals

• Raceway seals. Conduits or raceways shall be sealed or plugged at either or both ends where moisture will enter and contact live parts. Sealants shall be identified for use with the cable insulation, shield, or other components.

• (300.5 (G) Raceway Seals)

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Raceway Seals (con’t)

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E2803.9 Earth Movement

Where direct buried conductors, raceways, or cables are subject to movement by settlement or frost, direct buried conductors, raceways, or cables shall be arranged to prevent damage to the enclosed conductors or to equipment connected to the raceways.

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300.5(J) Ground Movement

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E3901 Required Receptacle Outlets

Receptacle outlets that are controlled by a wall switch are no longer counted as contributing to the required receptacle distribution in the specified rooms or areas.

• E3901.1. General.

3. Controlled by a wall switch in accordance with Section E3903.2, Exception 1

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E3901.7 Outdoor Outlets

A receptacle outlet is now required for each balcony, deck, or porch 20 square feet or greater in area.

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E3902.11 Arc-Fault Protection

• E3902.11 Arc-Fault Circuit-Interrupter Protection.

• Additional provisions for AFCI protection have been removed from the 2009 MRC.

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E3902.11 Arc-Fault Protection (con’t)

Arc-fault protection of bedroom outlets.  All branch circuits that supply 120-volt, single-phase, 15- and 20-ampere outlets installed in bedrooms shall be protected by a combination type arc-fault circuit interrupter installed to provide protection of the entire branch circuit.

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E3902.11 Arc-Fault Protection (con’t)

• Exception:  The location of the arc-fault circuit interrupter shall be permitted to be at other than the origination of the branch circuit provided that:

• 1.  The arc-fault circuit interrupter is installed within 6 feet (1.8 m) of the branch circuit overcurrent device as measured along the branch circuit conductors and

• 2.  The circuit conductors between the branch circuit overcurrent device and the arc-fault circuit interrupter are installed in a metal raceway or a cable with a metallic sheath.

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E4002.14 Tamper-Resistant Receptacles

The code now requires listed tamper-resistant receptacles for all 125-volt 15- and 20-ampere receptacles installed in dwelling units, on the outside of dwelling units, and in attached and detached garages.

• E4002.14 Tamper-Resistant Receptacles.

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E4002.15 Replacement of Receptacles

• Replacement of receptacles shall comply with the following as applicable.

• This change coordinates with the Michigan Electrical Code.

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E4003.12 Luminaires in Clothes Closets

Recessed or surface-mounted LED luminaires are now permitted in locations approved for incandescent luminaires. Surface-mounted LED and fluorescent luminaires may be installed within the defined storage area when the luminaire is specifically identified as suitable for such use.

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E4203.3 Disconnecting Means for Pools, Spas, and Hot Tubs

The required disconnecting means for pools, spas, and hot tubs must simultaneously disconnect all ungrounded conductors and be located not less than 5 feet from the water’s edge.

• E4203.3 Disconnecting Means.

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E4206.5.1 Servicing of Wet-Niche Luminaires

Revisions to Section E4206.5.1 clarify that wet-niche luminaires must be installed such that all maintenance can be performed on the pool deck.

• E4206.5.1 Servicing.

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E4209.1 Hydromassage Bathtubs

Hydromassage bathtubs are now required to be on an individual branch circuit. The required ground-fault circuit-interrupter (GFCI) device must be readily accessible.

• E4209.1 Ground-Fault Circuit Interrupters.

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M1305.1.4.1 Ground Clearance

Equipment and appliances supported from the ground shall be level and firmly supported on a concrete slab or other approved material extending not less than 3 inches above the adjoining ground. Such support shall be in accordance with the manufacturer’s installation instructions. Appliances suspended from the floor shall have a clearance of not less than 6 inches from the ground.

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M1307.3.1 Protection from Impact

Appliances shall not be installed in a location subject to vehicle damage except where protected by approved barriers.

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M1502 Clothes Dryer Exhaust

Dryer exhaust duct installation under the 2009 IRC focuses primarily on the dryer manufacturer’s installation instructions. The code clarifies the provisions for duct materials and installation to reflect current industry practices. Equivalent lengths for fittings appear in a new table and are based on the radius and type of fitting. When a concealed exhaust system with a length greater than 25 feet is installed in accordance with the dryer manufacturer’s installation instructions, the developed length must be identified with a permanent marker. New provisions require protection of the dryer duct against penetration by drywall fasteners.

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M1502 Clothes Dryer Exhaust (con’t)

• M1502.1 General. Clothes dryers shall be exhausted in accordance with the manufacturer’s instructions.

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M1503.4 Makeup Air for Kitchen Exhaust Hoods

A new Section M1503.4 requires makeup air for kitchen exhaust hoods with a rating greater than 400 cfm. The makeup air system must be synchronized with the operation of the exhaust hood.

• M1503.4 Makeup Air Required.

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M1601.3 & M1601.4 Duct Insulation Materials and Duct Installation

The code adds an alternative testing method for determining flame spread and smoke-developed indices of duct insulation materials. Spray-applied polyurethane foam insulation is now recognized for the insulation and sealing of ducts in specific attic and crawl space applications. Changes to the provisions for connecting and sealing ducts clarify their application.

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M1601.6 Independent Garage HVAC Systems

New language clarifies that an HVAC system is not permitted to serve both the dwelling unit and the garage.

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M1602.2 Prohibited Sources of Outdoor and Return Air

Unconditioned attics and crawl spaces are now specifically prohibited as sources of outdoor or return air for HVAC systems.

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M1701 Combustion Air

• Chapter 17, “Combustion Air”, Sections M1701.1.1 through M1703.5, Figures M1702.2 through M1703.3, and three associated definitions of Section R202 have been deleted without substitution. The remaining Section M1701.1 references the combustion air requirements of the manufacturer for solid-fuel-burning appliances and of NFPA 1 for oil-fired appliances. Prescriptive methods for providing combustion air to gas-fired appliances are found in IRC Chapter 24.

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M1905 General

• Solid fuel burning equipment shall be listed and labeled in accordance with section M1302.1, installed in accordance with the manufacturers installation instructions and NFPA 211-2006

• R-408.30541

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M2103.2 Hydronic Floor Heating Systems

Hydronic radiant floor heating systems now require thermal insulation installed below the piping or tubing. The R-value marking on the insulation must be visible before finish materials are installed. A thermal break is required between a heated slab and the foundation.

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M2104 Hydronic Piping Materials

The 2009 IRC recognizes two new polyethylene materials and their associated fittings for hydronic piping.

• M2104.3 Raised Temperature Polyethylene (PE-RT) Plastic Tubing. Joints between raised temperature polyethylene tubing and fittings shall conform to Sections M2104.3.1 and M2104.3.2. Mechanical joints shall be installed in accordance with the manufacturer’s instructions.

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M2104 Hydronic Piping Materials (con’t)

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G2408.2.1 & G2408.6 Appliance Installation in Garages

Elevation of the ignition source is not required for gas-fired appliances installed in an enclosed space that does not open into the garage. A new provision requires appliances to be installed and connected in a way that does not strain the gas piping connections.

• G2408.2.1 (305.3.1) Installation in Residential Garages.

• G2408.6 (305.12) Avoid Strain on Gas Piping.

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G2415.4 Underground Penetrations Prohibited

Gas piping is no longer permitted to penetrate the foundation wall below ground.

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G2415.6 Piping in Solid Floors

When both ends of a protective conduit installed in a slab terminate inside the building, the code now prohibits the ends from being sealed. For installations where one end of the conduit terminates outside the building, the interior end must be sealed and the exterior end must prevent entry of water and insects and be vented to the outdoors.

• G2415.6 (404.6) Piping in Solid Floors.

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G2415.6 Piping in Solid Floors (con’t)

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G2415.12 Piping Underground Beneath Buildings

This change expands the installation requirements for gas piping encased by a conduit and installed beneath buildings. Where both ends of the protective conduit occur inside the building, the code now prohibits sealing of the conduit.

• G2415.12 (404.12) Piping Underground Beneath Buildings.

• G2415.12.1 (404.12.1) Conduit with One End Terminating Outdoors.

• G2415.12.2 (404.12.2) Conduit with Both Ends Terminating Indoors.

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G2420.5 Appliance Shutoff Valve

Section G2420.5 has been reorganized to clarify the shutoff valve location requirements.

• G2420.5 (409.5) Appliance Shutoff Valve.• G2420.5.1 (409.5.1) Located Within Same Room.• G2420.5.2 (409.5.2) Vented Decorative Appliances

and Room Heaters.• G2420.5.3 (409.5.3) Located at Manifold.

The fuel gas provisions of the IRC requires shutoff valves to permit the servicing and replacement of appliances without the need to shut down the entire gas supply system. These valves are not considered emergency shutoff valves.

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G2420.5 Appliance Shutoff Valve (con’t)

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G2422.1.2.1 Maximum Length of Connectors

The maximum length of connectors has increased from 3 feet to 6 feet.

• G2422.1.2.1 (411.1.3.1) Maximum Length.

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G2439.5 Clothes Dryer Ducts

The reorganization of this section clarifies the code provisions for clothes dryer ducts. Except where determined by the manufacturer’s installation instructions, the maximum prescribed length for gas dryer exhaust ducts has increased from 25 feet to 35 feet.

• G2439.5 (614.6) Domestic Clothes Dryer Exhaust Ducts.

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G2439.5 Clothes Dryer Ducts (con’t)

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G2447.5 Vertical Clearance Above Cooking Top

Clearance requirements for household cooking appliances have been added to the fuel gas provisions of the 2009 IRC. In general, kitchen wall cabinets must be positioned at least 30 inches above the surface of the range or cook top.

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R202 Definitions

Story above Grade Plane. Any story having its finished floor surface entirely above grade plane, except that a basement shall be considered as a story above grade plane.

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• Exception: Live/work units

• Nonresidential less than 50%

• Maximum 5 workers

• Storage area 10% or less

• Maximum 3,000 sq. feet

2009 Code: R101.2 Scope

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R106.3.1 Approval of Construction Documents

REVIEWED FOR CODE COMPLIANCE

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• The definitions of agricultural or agricultural purposes and building inspector are added to the code and the definitions of building, building officials, registered design professional.

• Attic, Habitable. A finished or unfinished area, not considered a story, complying with all of the following requirements:

1. The occupiable floor area is a least 70 square feet,

2. The occupiable floor area has a ceiling height in accordance with Section R305,

3. The occupiable space is enclosed by the roof assembly above, knee walls (if applicable) on the sides, and the floor-ceiling assembly below.

2009 Code: Definitions, Attic and Habitable Attic

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• 2009 Code: Labeled. Equipment, materials or products to label, seal, symbol or other identifying mark of a nationally recognized testing laboratory.

2009 Code: Definitions, Labeled and Listed

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2009 Code: Definitions, Structural Insulated Panel (SIP)

A structural sandwich panel that consists of a light-weight foam plastic core securely laminated between two thin, rigid wood structural panel facings.

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R301.1.1 Alternative Provisions

As an alternative to the requirements in Section R301.1 the following standards are permitted.

1. American Forest and Paper Association (AF&PA) Wood Frame Construction Manual (WFCM).

2. American Iron and Steel Institute (AISI) Standard for Cold Formed Steel Framing-Prescriptive Method for One- and Two-Family Dwellings, (updated standard, and applies to 3 stories).

3. ICC-400 Standard on the Design and Construction of Log Structures.

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Table 301.2(5) Snow Loads

BAY 35 All except:

40 CITY OF PINCONNING

TOWNSHIP OF FRASER

TOWNSHIP OF GARFIELD

TOWNSHIP OF GIBSON

TOWNSHIP OF MT. FOREST

TOWNSHIP OF PINCONNING

BENZIE 60 All

BERRIEN 50 All

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Table R301.5 Minimum Uniformly Distributed Live Loads

The definitions for deck and balcony have been revised, and the minimum live load for balconies has been lowered from 60 psf to 40 psf to be consistent with decks.

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Table R301.5 Minimum Uniformly Distributed Live Loads (con’t)

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Exterior Walls. Construction, projections, openings and penetrations of exterior walls of dwellings and accessory buildings shall comply with Table R302.1

Exceptions:1. Walls, projections, openings, or penetrations in walls perpendicular to the line used to determine the fire separation.2. Walls of dwellings and accessory structures located on the same lot.

Section R302 Fire-resistant Construction

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R302.1 thru R302.3 Dwelling Unit Separation

Separate building in accordance with R302.1 for exterior walls.

Townhouses; A common two hour fire-resistance rated wall is required. State Amendment

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R302.5 Garage Openings and Penetrations

• R302.5 Dwelling/Garage Opening/Penetration Protection. Openings and penetrations through the walls or ceilings separating the dwelling from the garage shall be in accordance with Sections R302.5.1 through R302.5.3

• R302.5.1 Opening Protections.• R302.5.2 Duct Penetration

• R302.5.3 Other Penetrations. Penetrations through the separation required in Section R302.6 shall be protected as required by Section R302.11, Item 4.

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R302.6 Dwelling/Garage Fire Separation

The garage shall be separated as required by Table R302.6. Openings in garage walls shall comply with Section R302.5. This provision does not apply to garage walls that are perpendicular to the adjacent dwelling unit wall.

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R305.1 Minimum Ceiling Height

• R305.1 Minimum Height. Habitable space, hallways, bathrooms, toilet rooms, laundry rooms and portions of basements containing these spaces shall have a ceiling height of not less than 7 feet.Exceptions: 1. For rooms with sloped ceilings, at least 50 percent of the required floor area of the room must have a ceiling height of at least 7 feet (2134 mm) and no portion of the required floor area may have a ceiling height of less than 5 feet (1524 mm).

2. Bathrooms shall have a minimum ceiling height of 6 feet 8 inches (2036 mm) at the center of the front clearance area for fixtures as shown in Figure R307.1. The ceiling height above fixtures shall be such that the fixture is capable of being used for its intended purpose. A shower or tub equipped with a showerhead shall have a minimum ceiling height of 6 feet 8 inches (2036 mm) above a minimum area 30 inches (762 mm) by 30 inches (762 mm) at the showerhead.

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R305.1 Minimum Ceiling Height (con’t)

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R305.1.1 Basements

• Portions of basements that do not contain habitable space, hallways, bathrooms, toilet rooms, and laundry rooms shall have a ceiling height of not less than 6 feet 8 inches (2032 mm).Exception: Beams, girders, ducts, or other obstructions may project to within 6 feet, 4 inches (1931 mm) of the finished floor.

• R306.1 Sanitary facilities. Every dwelling unit shall be provided with a water closet, lavatory, bathtub or shower, and automatic clothes washer connection.

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• R308.1.1 Identification of Multiple Assemblies. “CPSC 16 CFR 1201” or “ANSI Z97.1” as appropriate.

• R308.3 Human Impact Loads. Exceptions:2. Mirrors and other glass panels mounted or hung on a surface that provides a continuous backing support.3. Glass unit masonry complying with Section R610.

R308.1.1 & R308.3 Identification of Glazing and Human Impact Loads

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R308.1.1 & R308.3 Identification of Glazing and Human Impact Loads (con’t)

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R308.4 Hazardous Locations

The following shall be considered specific hazardous locations for the purpose of glazing:

1. Glazing in all fixed and operable panels of swinging, sliding, and bifold doors.

Exceptions:

1. Glazed openings of a size through which a 3-inch diameter sphere is unable to pass.

2. Decorative glazing.

6. Glazing in an individual fixed or operable panel adjacent to a door where the nearest vertical edge is within a 24-inch arc of the door in a closed position and whose bottom edge is less than 60 inches above the floor or walking surface.

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R308.1.1 & R308.3 Identification of Glazing and Human Impact Loads (con’t)

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R310.1 Emergency Escape and Rescue Required

Basements, habitable attics and every sleeping room shall have at least one operable emergency escape and rescue opening.

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R311.1 Means of Egress

• R311.1 Means of Egress. All dwellings shall be provided with a means of egress as provided in this section. The means of egress shall provide a continuous and unobstructed path of vertical and horizontal egress travel from all portions of the dwelling to the exterior of the dwelling at the required egress door without requiring travel through a garage.

• R311.2 Egress Door. At least one egress door shall be provided for each dwelling unit. The egress door shall be side-hinged and shall provide a minimum clear width of 32 inches when measured between the face of the door and the stop, with the door open 90 degrees (1.57 rad). The minimum clear height of the door opening shall not be less than 78 inches in height measured from the top of the threshold to the bottom of the stop. Other doors shall not be required to comply with these minimum dimensions.

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R311 Means of Egress

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R311.7.2 Headroom

The minimum headroom in all parts of the stairway shall not be less than 6 feet 8 inches measured vertically from the sloped line adjoining the tread nosing or from the floor surface of the landing or platform on the portion of the stairway.

Exception: Where the nosings of treads at the side of a flight extend under the edge of a floor opening through which the stair passes, the floor opening shall be allowed to project horizontally into the required headroom a maximum of 4 ¾ inches.

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R311.7.3 & R311.7.4 Stair Treads and Risers

New provisions defining walk line intend to clarify the tread depth requirement for winders. Measurement of stair treads and risers exclusive of carpet will result in more consistent application of the code. A new exception to uniform tread depth provides that winders are permitted for a turn in a stairway of otherwise rectangular treads.• R3111.7.3 Walk line.• R311.7.4 Stair Treads and Risers.• R311.7.4.1 Riser Height• R311.7.4.2 Tread Depth.

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R311.7.3 & R311.7.4 Stair Treads and Risers (con’t)

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R311.7.7 Handrails

Exceptions:

1. The use of a volute, turnout, or starting easing shall be allowed over the lowest tread.

2. When handrail fittings or bendings are used to provide continuous transition between flights, handrail height shall be permitted to exceed the maximum height.

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• R312.1 Where required. Guards shall be located along open-sided walking surfaces, including stairs, ramps and landings, that are located more than 30 inches measured vertically to the floor or grade below at any point within 36 inches horizontally to the edge of the open side. Insect screening shall not be considered as a guard.

• R312.2 Height. Required guards at open-sided walking surfaces, including stairs, porches, balconies or landings, shall be not less than 36 inches… adjacent fixed seating….

Exceptions:

1. Guards on the open sides of stairs shall have a height not less than 34 inches.

2. Where the top of the guard also serves as a handrail shall not be not less than 34 inches and not more than 38 inches.

• R312.3 Opening Limitations.

R312 Guards

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R312.1 Guards (con’t)

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• R313.1 Design and installation. Where installed, automatic residential fire sprinkler systems shall conform to the design and installation requirements of the National Fire Protection Association (NFPA) standard 13D.

• P2902.5.4 Connections to automatic fire sprinkler systems. The potable water supply to automatic fire sprinkler systems shall be protected against backflow by a double check valve assembly or a reduced pressure principle backflow preventer.Exception: Isolation of the water distribution system is not required for deluge, preaction, or dry pipe system.

• R2904.1 General Where installed, residential fire sprinkler systems, or portions thereof, shall be in accordance with NFPA 13D.

R 408.30539a Automatic Fire Sprinkler Systems-MRC- Not Required

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• R314.1 Smoke Detection and Notification.• R314.2 Smoke Detection Systems. Where a household fire

warning system is installed using a combination of smoke detector and audible notification device(s), it shall become a permanent fixture of the occupancy and owned by the homeowner. The system shall be monitored by an approved supervising station and be maintained in accordance with NFPA 72.

Exception: Where smoke alarms are provided meeting the requirements of Section R314.4.

• R314.3 Location. Smoke alarms shall be installed in the following locations:1. In each sleeping room.2. Outside each separate sleeping area of the bedrooms.3. On each additional story of the dwelling, including basements and habitable attics.

R314 Smoke Alarms

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R314 Smoke Alarms (con’t)

• R314.3.1 Alterations, Repairs and Additions requiring a permit occur, or when one or more sleeping rooms are added or created in existing dwellings, the individual dwelling unit shall be equipped with smoke alarms located as required for new dwellings.Exceptions:1. Work involving the exterior surfaces of dwellings, such as the replacement of roofing or siding, or the addition or replacement of windows or doors, or the addition of a porch or deck, are exempt from the requirements of this section.2. Installation, alteration or repairs of plumbing or mechanical systems are exempt from the requirements of this section.

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R314 Smoke Alarms (con’t)

• R314.4 Power Source. Smoke alarms shall receive their primary power from the building wiring when such wiring is served from a commercial source, and when primary power is interrupted, shall receive power from a battery. Wiring shall be permanent and without a disconnecting switch other than those required for overcurrent protection. Smoke alarms shall be interconnected.

Exceptions:

1. Smoke alarms shall be permitted to be battery operated when installed in buildings without commercial power.

2. Interconnection and hard-wiring of smoke alarms in existing areas shall not be required where the alterations or repairs do not result in the removal of interior wall or ceiling finishes exposing the structure, unless there is an attic, crawl space or basement available

which could provide access for hard-wiring and interconnection without the removal of interior finishes.

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R315 Carbon Monoxide Alarms

• R315.1 Carbon Monoxide Alarms. For new construction, an approved carbon monoxide alarm shall be installed outside of each separate sleeping area in the immediate vicinity of the bedrooms in dwelling units within which fuel-fired appliances are installed and in dwelling units that have attached garages.

• R315.2 Where Required in Existing Dwellings. Where work requiring a permit occurs in existing dwellings that have attached garages or in existing dwellings within which fuel-fired appliances exist, carbon monoxide alarms shall be provided in accordance with Section R315.1.

• R315.3 Alarm Requirements. Single station carbon monoxide alarms shall be listed as complying with UL 2034 and shall be in stalled in accordance with this code and the manufacturer’s installation instructions.

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R317.1 Locations for Protection Against Decay

Protection from decay is now required for wood siding, sheathing, and wall framing less than 2 inches above a concrete slab exposed to weather.

• R317 Protection of Wood and Wood Based Products Against Decay.

• R317.1 Location Required. Protection of wood and wood based products from decay shall be provided in the following locations.5. Wood siding, sheathing and wall framing on the exterior of a building having a clearance of less than 6” from the ground or less than 2 inches measured vertically from concrete steps, porch slabs, patio slabs, and similar horizontal surfaces exposed to the weather.

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R317.1 Locations for Protection Against Decay (con’t)

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R317.3 Fasteners and Connectors in Contact with Treated Wood

• R317.3 Fasteners and Connectors in Contact with Preservative-treated and Fire-retardant-treated Wood.

• R317.3.1 Fasteners for Preservative-treated Wood.• R317.3.2 Fastenings for Wood Foundations.• R317.3.3 Fasteners for Fire-retardant-treated Wood

used in Exterior Applications or Wet or Damp Locations.

• R317.3.4 Fasteners for Fire-retardant-treated Wood used in Interior Applications.

• All fasteners shall be of the appropriate ASTM standard

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A definition and specific requirements for manufactured wood/plastic composites are introduced into the IRC.

• R317.4 Wood/Plastic Composites.

• R317.4.1 Wood/plastic composites shall be installed in accordance with the manufacturer’s instructions.

R317.4 Wood/Plastic Composites

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R202 Definitions-Wood/Plastic Composite

A composite material made primarily from wood or cellulose-based materials and plastic.

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R317.4 Wood/Plastic Composites (con’t)

• R311.7.4.4 Exterior Wood/plastic Composite Stair Treads. Wood/plastic composite stair treads shall comply with the provisions of Section R317.4.

• R311.7.7.4 Exterior Wood/plastic Composite Handrails. Wood/plastic composite handrails shall comply with the provisions of Section R317.4.

• R317.4=ASTM D7032

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R319.1 Site Address

The IRC now prescribes the minimum size of address numbers and requires a contrasting background for visibility.

• R319.1 Address Numbers. Numbers shall be a minimum of 4 inches high with a minimum stroke width of ½ inch.

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R323 Storm Shelters

Storm shelters, when built or installed, must be constructed in accordance with the new ICC/NSSA-500 “Standards on the Design and Construction of Storm Shelters.”

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R401.3 Surface Drainage

Where it is not feasible to provide the prescribed fall of 6 inches within the first 10 feet away from a foundation, the code includes new performance language requiring drainage away from the foundation without prescribing a slope.

• R401.3 Drainage.Exception: Where lot lines, walls, slopes or other physical barriers prohibit 6 inches of fall within 10 feet, drains or swales shall be constructed to ensure drainage away from the structure.

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R401.4 Soil Tests

The revised text defines the necessary criteria for requiring a soil test in more objective terms based on available scientific data.

• R401.4 Soil Tests. Where quantifiable data created by accepted soil science methodologies indicate expansive, compressible, shifting or other questionable soil characteristics are likely to be present.

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R403.4 Footings for Precast Concrete Foundations

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R404.1 Concrete and Masonry Foundation Walls

The concrete foundation wall provisions have been substantially revised and are now separated from the masonry foundation wall provisions. There are no technical changes to the masonry provisions, there are a number of changes to the concrete provisions.

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R404.5 Precast Concrete Foundation Walls

• R404.5.1 Design. Precast concrete foundation walls shall be designed in accordance with accepted engineering practice. The design and manufacture of precast concrete foundation wall panels shall comply with the materials requirements of Section R402.3 or ACI 318.

• R404.5.2 Precast Concrete Foundation Design Drawings.1. Design loading as applicable2. Footing design and material3. Concentrated loads and their points of application4. Soil-bearing capacity5. Maximum allowable total uniform load6. Seismic Design Category7. Basic wind speed

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R405.1.1 Precast Concrete Foundation

Precast concrete walls that retain earth and enclose habitable or useable space located below grade that rest on crushed stone footings shall have a perforated drainage pipe installed below the base of the wall on either the interior or exterior side of the wall, at least one foot beyond the edge of the wall.

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R406.4 Precast Concrete Foundation System Dampproofing

• R406.4 Precast Concrete Foundation System Dampproofing. Except where required by Section R406.2 to be waterproofed shall be damproofed.

• R406.4.1 Panel Joints Sealed. Precast concrete foundation panel joints shall be sealed.

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R408.1 & R408.2 Underfloor Space Ventilation

This change reestablishes a provision found in the 2003 IRC for reducing the required net area of ventilation openings to 1/1500 of the underfloor area where the ground is covered with a vapor retarder.

• R408.1 Ventilation.• R408.2 Openings for Underfloor Ventilation.

Exception: The total area of ventilation openings shall be permitted to be reduced to 1/500.

The 2006 IRC deleted a provision for reduced ventilation of crawl spaces where a vapor retarder covered the ground of the crawl space. This exception from the 2003 IRC is reinstated in the 2009 edition.

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R408.1 & R408.2 Underfloor Space Ventilation (con’t)

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R502.2.2.1 & Table R502.2.2.1 Deck Ledger Connection

• R502.2.2.1 Deck Ledger Connection to Band Joist.• R502.2.2.1.1 Placement of Lag Screws or Bolts in

Deck Ledgers.• R502.2.2.2 Alternate Deck Ledger Connection.• R502.2.2.3 Deck Lateral Load Connection.

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R502.2.2.1 & Table R502.2.2.1 Deck Ledger Connection (con’t)

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R502.7 Lateral Restraint for Wood Joists

• R502.7 Lateral Restraint at Supports.Exceptions:1. Trusses, structural composite lumber, structural glued-laminated members and I-joists shall be supported laterally as required by the manufacturer’s recommendations.

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R602.6.1 Drilling and Notching of Top Plate

To reduce the possibility of splitting the wood plate, the length of the nails used to attach the metal tie has been reduced from 3 ½ inches to 1 ½ inches.

• R602.6.1 Drilling and Notching of Top Plate. Shall be fastened across and to the plate at each side of the opening with not less than eight 10d (0.148 inch diameter) nails having a minimum length of 1 ½ inches. The metal tie must extend a minimum of 6 inches past the opening.

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R602.6.1 Drilling and Notching of Top Plate (con’t)

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R611 Exterior Concrete Walls Construction

Section R611 has been completely revised to reflect the provisions of the new referenced Portland Cement Association standard PCA 100 “Prescriptive Design of Exterior Concrete Walls for One- and Two-Family Dwellings”.

• R611 Exterior Concrete Wall Construction• R611.1 General. Exterior Concrete walls shall be

designed and constructed in accordance with the provisions of this section or in accordance with the provisions of PCA 100 or ACI 318.

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R612.2 Window Sills

• R612.2 Window Sills. In dwelling units, where the opening of an operable window is located more than 72 inches above the finished grade or surface below, the lowest part of the clear opening of the window shall be a minimum of 24 inches above the finished floor. Operable sections of windows shall not permit openings that allow passage of a 4-inch-diameter sphere where such openings are located within 24 inches of the finished floor.

• R612.3 Window Fall Prevention Devices.• R612.4 Window Opening Limiting Devices.• R612.4.1 General Requirements.• R612.4.2 Operation for Emergency Escape.

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R612.2 Window Sills (con’t)

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R703 Weather-Resistant Exterior Covering

Performance requirements for wind resistance have been added to the water resistance provisions of exterior wall covering systems in Section R703.1. Changes to Table R703.4 clarify the water-resistive barrier requirements.

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R703.7.3 Lintels

• R703.7.3 Lintels. Steel lintels shall be shop coated with a rust inhibitive paint, except for lintels made of corrosion-resistant steel or steel treated with coatings to provide corrosion resistance. Construction of openings shall comply with either Section R703.7.3.1 or 703.7.3.2.

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R703.7.4 Masonry Veneer Anchorage

• R703.7.4 Anchorage. Masonry veneer shall be anchored to the supporting wall with corrosion-resistant metal ties embedded in mortar or grout and extending into the veneer a minimum of 1 ½ in., with not less than 5/8 inch mortar or grout cover to outside face.

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R806 Attic Ventilation

The attic ventilation requirements now permit methods and materials other than wire mesh for protecting openings against the entry of insects. The minimum opening dimension has been reduced from 1/8 to 1/16 inch. Vapor retarders are broken into three classed based on properties associated with the rate of restricting the passage of water. The provisions for unvented attic spaces have been rewritten for accuracy and clarification.

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R806 Attic Ventilation (con’t)

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R807.1 Attic Access

• R807.1 Attic Access. Buildings with combustible ceiling or roof construction shall have an attic access opening to attic areas that exceed 30 square feet and have a vertical height of 30 inches or greater. The vertical height shall be measured from the top of the ceiling framing members to the underside of the roof framing members.

The rough-framed opening shall not be less than 22 inches by 30 inches. When located in a wall, the opening shall be a minimum of 22 inches wide by 30 inches high. When the access is located in a ceiling, minimum unobstructed headroom in the attic space shall be 30 inches at some point above the access measured vertically from the bottom of ceiling framing members. See Section M1305.1.3 for access requirements where mechanical equipment is located in attics.

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R807.1 Attic Access (con’t)

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R1001.8 Smoke Chamber

Smoke chamber walls shall be constructed of solid masonry units, hollow masonry units grouted solid, stone or concrete. The total minimum thickness of front, back, and side walls shall be 8 inches of solid masonry. The inside surface shall be parged smooth with refractory mortar conforming to ASTM C 199.

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Energy Conservation

• Adopts by Reference 2009 IECC with Michigan Amendments

• Scoping includes MRC scoping

• Separate Michigan Code Book for Energy Conservation

• Adoption date March 9, 2011

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AG105.2 Outdoor Swimming Pool Barrier

For doors that provide access to an outdoor swimming pool, the prescriptive requirements for door alarm activation, deactivation, and reset have been deleted in favor of matching requirements in UL 2017.

• AG105.2 Outdoor Swimming Pool.

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Special Thanks to:

• Tracie Pack

• Shannon Matsumoto

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END

THANK YOU

Bureau of Construction Codes

(517) 241-9302

www.michigan.gov/bcc