Updates and Changes to the State Building Code Manuals Rules

Statutory Authority: RSA 155-A:10

• Bcr 301 PURPOSE
• Bcr 302 DEFINITIONS OF TERMS
• Bcr 303 INTERNATIONAL BUILDING CODE 2009
• Bcr 304 INTERNATIONAL PLUMBING CODE 2009
• Bcr 305 INTERNATIONAL MECHANICAL CODE 2009
• Bcr 306 INTERNATIONAL ENERGY CONSERVATION CODE 2009
• Bcr 307 NATIONAL ELECTRICAL CODE 2008
• Bcr 308 INTERNATIONAL RESIDENTIAL CODE 2009

PART Bcr 301 PURPOSE

Bcr 301.01 Purpose

(a) The purpose of these rules is to publish the updates or changes to the state building code manuals for the following codes:

(1) International Building Code 2009 Edition, adopted with an effective date of April 1, 2010;
(2) International Plumbing Code 2009 Edition, adopted with an effective date of April 1, 2010;
(3) International Mechanical Code 2009 Edition, adopted with an effective date of April 1, 2010;
(4) International Energy Conservation Code 2009 Edition, adopted with an effective date of April 1, 2010;
(5) National Electrical Code 2008, as published by the National Fire Protection Association; and
(6) International Residential Code 2009 Edition, adopted with an effective date of April 1, 2010.

PART Bcr 302 DEFINITIONS OF TERMS

Bcr 302.01 "Board" means the New Hampshire state building code review board as established in RSA 155-A:10, I.

Bcr 302.02 "Commissioner" means the commissioner of the New Hampshire department of safety.

Bcr 302.03 "Department" means the New Hampshire department of safety.

Bcr 302.04 "Person" means "person" as defined in RSA 155-A:1, V.

Bcr 302.05 "State fire marshal" means the state fire marshal of the state of New Hampshire.

PART Bcr 303 CHANGES OR UPDATES TO THE INTERNATIONAL BUILDING CODE 2009

Bcr 303.01 International Building Code 2009

(a) Pursuant to RSA 155-A:10, V, the board hereby adopts the following changes and updates to the applicable provisions of the International Building Code 2009:

(1) Amend Section 101.1 of the International Building Code 2009 by replacing said section with the following:

101.1 Title. These regulations shall be known as the Building Code of the State of New Hampshire hereinafter referred to as "this code."

(2) Amend Section 101.4 of the International Building Code 2009 by replacing said section with the following:

101.4 Referenced codes. The other codes listed in §101.4.1 through §101.4.6 and referenced elsewhere in this code shall be considered part of the requirements of this code to the prescribed extent of each such reference.
101.4.1 Gas. Fuel gas systems shall comply with the New Hampshire Fire Code, Saf-C 6000 (NFPA 54).
101.4.2 Mechanical. The provisions of the International Mechanical Code shall apply to the installation, alterations, repairs, and replacement of mechanical systems, including equipment, appliances, fixtures, fittings and/or appurtenances, including ventilating, heating, cooling, air conditioning and refrigeration systems, incinerators, and other energy-related systems.
101.4.3 Plumbing. The provisions of the International Plumbing Code shall apply to the installation, alteration, repair and replacement of plumbing systems, including equipment, appliances, fixtures, fittings and appurtenances, and where connected to a water or sewage system and all aspects of a medical gas system. Private sewage disposal systems shall comply with RSA 485-A:29-44.
101.4.4 Property maintenance. [RESERVED]
101.4.5 Fire prevention. The provisions of the New Hampshire Fire Code Saf-C 6000 (NFPA 1) shall apply to matters affecting or relating to structures, processes and premises from the hazard of fire and explosion arising from the storage, handling or use of structures, materials or devices; from conditions hazardous to life, property or public welfare in the occupancy of structures or premises; and from the construction, extension, repair, alteration or removal of fire suppression and alarm systems or fire hazards in the structure or on the premises from occupancy or operation.
101.4.6 Energy. The provisions of the International Energy Conservation Code shall apply to all matters governing the design and construction of buildings for energy efficiency.

(3) Amend Section 102.6 of the International Building Code 2009 by replacing said section with the following:

102.6 Existing structures. The legal occupancy of any structure existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code, the New Hampshire Fire Code Saf-C 6000 (NFPA 1 and NFPA 101) or as is deemed necessary by the building official for the general safety and welfare of the occupants and the public.

(4) Delete Table 503 of the International Building Code 2009 and replace it with NH Modified Table 503 .

(5) Amend Section 506 of the International Building Code 2009 by replacing said section with the following:

Section 506.0 Area Modifications

General: The provisions of this section shall modify the area limitations of Table 503 as herein specified.

Street frontage increase: Where a building or structure has more than 25 percent of the building perimeter fronting on a street or other unoccupied space, the area limitations specified in Table 503 shall be increased 2 percent for each 1 percent of such excess frontage. The unoccupied space shall be on the same lot or dedicated for public use, shall not be less than 30 feet (9144 mm) in width and shall have access from a street by a posted fire lane not less than 18 feet (5486 mm) in width.

Automatic sprinkler system: Where a building is equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1, the area limitations specified in Table 503 shall be increased 200 percent for one- and two-story buildings and 100 percent for buildings more than two stories in height.
Exception:
1. The automatic sprinkler system increase shall not apply to buildings with an occupancy in Use Group H-1.
2. automatic sprinkler system increase shall not apply to any fire area with an occupancy in Use Group H-2 or H-3.

Multistory buildings: The area limitations for buildings two stories in height shall be the same as the area limitations provided in Table 503 for one-story buildings. In buildings over two stories in height, the area limitations of Table 503 for one-story buildings shall be reduced as specified in Table 506.4.

Table 506.4 REDUCTION OF AREA LIMITATIONS

(6) Amend Section 716.5.3 of the International Building Code 2009 by replacing said section with the following:

716.5.3 Shaft enclosures. Shaft enclosures that are permitted to be penetrated by ducts and air transfer openings shall be protected with approved fire and smoke dampers installed in accordance with their listing.
Exceptions:
1. Fire dampers are not required at penetrations of shafts where:
1.1. Steel exhaust subducts are extended at least 22 inches (559 mm) vertically in exhaust shafts, provided there is a continuous airflow upward to the outside; or
1.2. Penetrations are tested in accordance with ASTM E 119 or UL 263 as part of the fire-resistance-rated assembly; or
1.3. Ducts are used as part of an approved smoke control system designed and installed in accordance with Section 909 and where the fire damper will interfere with the operation of the smoke control system; or
1.4. The penetrations are in parking garage exhaust or supply shafts that are separated from other building shafts by not less than 2-hour fire-resistance-rated construction.
2. In Group B and R occupancies equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, smoke dampers are not required at penetrations of shafts where:
2.1. Kitchen, clothes dryer, bathroom and toilet room exhaust openings are installed with steel exhaust subducts, having a minimum wall thickness of 0.187-inch (0.4712 mm) (No. 26 gage);
2.2. The subducts extend at least 22 inches (559 mm) vertically; and
2.3. An exhaust fan is installed at the upper terminus of the shaft that is powered continuously in accordance with the provisions of Section 909.11, so as to maintain a continuous upward airflow to the outside.
3. Smoke dampers are not required at penetration of exhaust or supply shafts in parking garages that are separated from other building shafts by not less than 2-hour fire-resistance-rated construction.
4. Smoke dampers are not required at penetrations of shafts where ducts are used as part of an approved mechanical smoke control system designed in accordance with Section 909 and where the smoke damper will interfere with the operation of the smoke control system.
5. Fire dampers and combination fire/smoke dampers are not required in kitchen and clothes dryer exhaust systems when installed in accordance with the International Mechanical Code.
6. Fire and smoke dampers shall not be installed in laboratory fume hood exhaust systems.
7. Fire and smoke dampers shall not be installed in hazardous exhaust systems.

(7) Amend Section 716.5.4.1 of the International Building Code 2009 by replacing said section with the following:

716.5.4.1 Corridors. A listed smoke damper designed to resist the passage of smoke shall be provided at each point a duct or air transfer opening penetrates a corridor enclosure required to have smoke and draft control doors in accordance with Section 715.4.3.
Exceptions:
1. Smoke dampers are not required where the building is equipped throughout with an approved smoke control system in accordance with Section 909, and smoke dampers are not necessary for the operation and control of the system.
2. Smoke dampers are not required in corridor penetrations where the duct is constructed of steel not less than 0.019 inch (0.48 mm) in thickness and there are no openings serving the corridor.
3. Fire and smoke dampers shall not be installed in laboratory fume hood exhaust systems.
4. Fire and smoke dampers shall not be installed in hazardous exhaust systems.

(8) Amend Section 2902.02 of the International Building Code 2009 by replacing said section with the following:

2902.2 Separate facilities. Where plumbing fixtures are required, separate facilities shall be provided for each sex.
Exceptions:
1. Separate facilities shall not be required for dwelling units and sleeping units.
2. Separate facilities shall not be required in structures or tenant spaces with a total occupant load, including both the employees and customers, of 15 or less.
3. Separate facilities shall not be required in mercantile occupancies in which the maximum occupant load is 50 or less.
4. Separate facilities shall not be required in assembly occupancies that serve food with a total occupant load, including both employees and customers, of less than 25.

(9) Adopts in its entirety Appendix C of the International Building Code 2009, Group U, Agricultural Buildings.

(10) Amend section 3410.2 of the International Building Code 2009 by replacing said section with the following:

3412.2 Applicability. Structures existing prior to September 14, 2003, in which there is work involving additions, alterations or changes of occupancy shall be made to conform to the requirements of this section or the provisions of Sections 3403 through 3409. The provisions in Sections 3412.2.1 through 3412.2.5 shall apply to existing occupancies that will continue to be, or are proposed to be, in Groups A, B, E, F, M, R, S and U. These provisions shall not apply to buildings with occupancies in Group H or I.

(11) Amend section 1001.1 of the International Building Code 2009 by replacing said section with the following:

1001.1 General. Buildings or portions thereof shall be provided with a means of egress system as required by RSA 155-A:2, II (NFPA 101).

(12) Amend section 1001.1 of the International Building Code 2009 by replacing said section with the following:

1105.1 Public entrances. In addition to accessible entrances required by Sections 1105.1.1 through 1105.1.6, at least 60 percent of all public entrances shall be accessible. At least one of the required accessible public entrances in Use Groups A, E, I1, I2, I3, M, R1 and R2 and all buildings greater than 1,000 sq. ft (93 m2) in Group B, and the nonresidential portion of live/work units per Section 419 greater than 1,000 sq. ft. (93 m2) shall be equipped with full powered automatic doors in compliance with ICC A117.1. Where an automatic door is not provided, a mechanism to alert the owner of a presence at the door shall be provided.
Exceptions:
1. An accessible entrance is not required to areas not required to be accessible.
2. Loading and service entrances that are not the only entrance to a tenant space.

(13) Amend section 406.12 of ANSI 117.1, 2003 edition as referenced in the International Building Code 2009 by replacing said section with the following:

406.12 Detectable Warnings at Curb Ramps and Raised Marked Crossings. Curb Ramps and marked crossings that are raised to the same level as the adjoining sidewalk shall be preceded by a 24-inch (610 mm) deep detectable warning complying with Section 705, extending the full width of the curb ramp or marked crossing.

(14) Amend section 502.2 of ANSI 117.1, 2003 edition as referenced in the International Building Code 2009 by replacing said section with the following:

502.2 Vehicle Space Size. Car and van parking spaces shall be 96 inches (2440 mm) minimum in width.

(15) Amend certain sections in 502.4 of ANSI 117.1, 2003 edition as referenced in the International Building Code 2009 by replacing said sections as indicated by the following:

502.4.2 Width.
502.4.2.1 Access aisles serving car parking spaces shall be 60 inches (1525 mm) minimum in width.
502.4.2.2 Access aisles serving van parking spaces shall be 96 inches (2440 mm) minimum in width.

502.4.4 Marking.
502.4.4.1 Access aisles shall be marked so as to discourage parking in them and designated by vertical "No Parking" signs located at the front of the access aisle and mounted with the bottom of the sign 60 inches (1525 mm) minimum above the floor of the access aisle.
Exception: A “No Parking” sign is not required when:
1. The placement of the sign would obstruct the accessible route to the accessible entrance.
2. There is a non-removable physical obstacle preventing the placement of the sign.
3. The placement of a sign would be in front of a window wall.
4. The placement of a sign would otherwise be in conflict with a provision of the IBC 2009 or a provision of this standard.
502.4.4.2 Where access aisles are marked with lines, the width measurements of access aisles and adjacent parking spaces shall be made from the centerline of the markings.
Exception: Where access aisles or parking spaces are not adjacent to another access aisle or parking space, measurements shall be permitted to include the full width of the line defining the access aisle or parking space.

(16) Amend section 1608.2 of the International Building Code 2009 by replacing said section with the following:

1608.2 Ground snowloads. The ground snowloads to be used in determining the design snow loads for roofs shall be determined in accordance with ASCE 7 or Figure 1608.2 for the contiguous United States and Table 1608.2 for Alaska. Site-specific case studies shall be made in areas designated "CS" in Figure 1608.2. Ground snow loads for sites at elevations above the limits indicated in Figure 1608.2 and for all sites within the CS areas shall be approved. Ground snow load determination for such sites shall be based on an extreme value statistical analysis of data available in the vicinity of the site using a value with a 2-percent annual probability of being exceeded (50-year mean recurrence interval). Snow loads are zero for Hawaii, except in mountainous regions as approved by the building official.
1608.2.1. Ground snowloads are permitted to be determined in accordance with Table 1 of Ground Snow Loads for New Hampshire ERDC/CRREL TR-02-6.

PART Bcr 304 CHANGES OR UPDATES TO THE INTERNATIONAL PLUMBING CODE 2009

Bcr 304.1. International Plumbing Code 2009.

(a) Pursuant to RSA 155-A:10, V, the board hereby adopts the following changes and updates to the applicable provisions of the International Plumbing Code 2009.

(1) Amend section 101.1 of the International Plumbing Code 2009 by replacing said section with the following:

101.1 Title. These regulations shall be known as the International Plumbing Code of the State of New Hampshire hereinafter referred to as "this code."

(2) Amend section 101.2 of the International Plumbing Code 2009 by replacing said section with the following:

101.2 Scope. The provisions of this code shall apply to the erection, installation, alteration, repairs, relocation, replacement, addition to, use or maintenance of plumbing systems within this jurisdiction. This code shall also regulate nonflammable medical gas, inhalation anesthetic, vacuum piping, nonmedical oxygen systems and sanitary and condensate vacuum collection systems. Fuel gas systems shall comply with the New Hampshire Fire Code, Saf-C 6000 (NFPA 54). Provisions in the appendices shall not apply unless specifically adopted.
Exception: Detached one- and two-family dwellings and multiple single-family dwellings (townhouses) not having more than three stories high with separate means of egress and their accessory structures shall comply with the International Residential Code.

(3) Amend section 104.2 of the International Plumbing Code 2009 by replacing said section with the following:

104.2 Rule-making authority. The code official shall have authority as necessary in the interest of public health, safety and general welfare to adopt and promulgate written rules and regulations to interpret and implement the provisions of this code to secure the intent thereof and to designate requirements applicable because of local climatic or other conditions. Such rules shall not have the effect of waiving structural or fire performance requirements specifically provided for in this code, or of violating accepted engineering practice involving public safety.

(4) Amend section 106.6.2 of the International Plumbing Code 2009 by replacing said section with the following:

106.6.2 Fee schedule. The fees for all plumbing work shall be as indicated by administrative rules Plu 306.01 and/or as determined by the local jurisdiction.

(5) Amend section 106.6.3 of the International Plumbing Code 2009 by deleting said section.

(6) Amend section 108.4 of the International Plumbing Code 2009 by replacing said section with the following:

108.4 Violation penalties. Any person who shall violate a provision of this code or shall fail to comply with any of the requirements thereof or who shall erect, install, alter or repair plumbing work in violation of the approved construction documents or directive of the code official, or of a permit or certificate issued under the provisions of this code, shall be subject to penalties as prescribed by law. Each day that a violation continues after due notice has been served shall be deemed a separate offense.

(7) Amend section 108.5 of the International Plumbing Code 2009 by replacing said section with the following:

108.5 Stop work orders. Upon notice from the code official that plumbing system is being done contrary to the provisions of this code or in a dangerous or unsafe manner, such work shall immediately cease. Such notice shall be in writing and shall be given to the owner of the property, or to the owner's agent, or to the person doing the work. The notice shall state the conditions under which work is authorized to resume. Where an emergency exists, the code official shall not be required to give a written notice prior to stopping the work. Any person who shall continue any work on the system after having been served with a stop work order, except such work as that person is directed to perform to remove a violation or unsafe condition, shall be subject to penalties as prescribed by law.

(8) Amend section 305.6.1 of the International Plumbing Code 2009 by replacing said section with the following:

301.3 Connections to the sanitary drainage system. All plumbing fixtures, drains, appurtenances and appliances used to receive or discharge liquid wastes or sewage shall be directly connected to the sanitary drainage system of the building or premises, in accordance with the requirements of this code. This section shall not be construed to prevent the indirect waste systems required by Chapter 8.
Exception: Bathtubs, showers, lavatories, clothes washers and laundry trays shall not be required to discharge to the sanitary drainage system where such fixtures discharge to an approved gray water system for flushing of water closets and urinals or for subsurface landscape irrigation provided that all irrigation use is first approved by the State of NH Department or Environmental Services.

(9) Amend section 501.2 of the International Plumbing Code 2009 by replacing said section with the following:

501.2 Water heater as space heater. Where a combination potable water heating and space heating system requires water for space heating, a master thermostatic mixing valve complying with ASSE 1017 shall be provided to limit the water supplied to the potable hot water distribution system to a temperature of 130°F (55°C) or less. The potability of the water shall be maintained throughout the system.

(10) Amend section 501.6 of the International Plumbing Code 2009 by replacing said section with the following:

501.6 Water temperature control in piping from tankless heaters. The temperature of water from tankless heaters intended for faucets for domestic or personal hygiene use shall be a maximum of 130°F (55°C). A tempering device conforming to ASSE 1017 shall be installed to control the water temperature. This provision shall not supersede the requirement for protective shower valves in accordance with Section 424.3.

(11) Amend section 701.2 of the International Plumbing Code 2009 by replacing said section with the following:

701.2 Sewer required. Every building in which plumbing fixtures are installed and all premises having drainage piping shall be connected to a public sewer, where available, or an approved private sewage disposal system in accordance with RSA 485-A:29-44.

(12) Amend section 904.1 of the International Plumbing Code 2009 by replacing said section with the following:

Section 904.1 Roof extension. All open pipes that extend through a roof shall be terminated at least 12 inches (305 mm) above the roof, except that where a roof is to be used for any purpose other than weather protection, the vent extensions shall be run at least 7 feet (2134 mm) above the roof.

(13) Amend section 305.6.1 of the International Plumbing Code 2009 by replacing said section with the following:

305.6.1 Sewer depth. Building sewers that connect to private sewage disposal systems shall conform to RSA 485-A relative to minimum depth below finished grade. Building sewers that connect to public sewers shall be a minimum depth of 48 inches (1219 mm) below grade or adequately insulated to afford the same protection whenever a condition arises that the 48 inches (1219 mm) cannot be attained.

(14) Amend section 404.4.1 of the International Plumbing Code 2009 by replacing said section with the following:

404.1.1 Where required. Accessible plumbing facilities and fixtures shall be provided in accordance with the International Building Code and the State of NH Architectural Barrier Free Design Standards.

(15) Amend section 501.8 of the International Plumbing Code 2009 by replacing said section with the following:

501.8 Temperature controls. All hot water supply systems shall be equipped with automatic temperature controls capable of adjustments from the lowest to the highest acceptable temperature settings for the intended temperature operating range. The temperature of water supplied at faucets for domestic or personal hygiene use shall be limited to a maximum of 130°F (55°C).

(16) Amend section 607.1 of the International Plumbing Code 2009 by replacing said section with the following:

607.1 Where required. In residential occupancies, hot water not to exceed 130°F (55°C) shall be supplied to all plumbing fixtures and equipment utilized for bathing, washing, culinary purposes, cleansing, laundry or building maintenance. In nonresidential occupancies, hot water not to exceed 130°F (55°C) shall be supplied for culinary purposes, cleansing, laundry or building maintenance purposes. In nonresidential occupancies, hot water or tempered water shall be supplied for bathing and washing purposes. Tempered water shall be supplied through a water temperature limiting device that conforms to ASSE 1070 and shall limit the tempered water to a maximum of 110ºF (43ºC). This provision shall not supersede the requirement for protective shower valves in accordance with Section 424.3.

(17) Adopt Appendix C in its entirety per 101.2:

APPENDIX C
GREY WATER RECYCLING SYSTEM

(18) Adopt Appendix B in its entirety per 101.2:

APPENDIX B
RATES OF RAINFALL FOR VARIOUS CITIES

(19) Adopt Appendix F in its entirety per 101.2:

APPENDIX F
STRUCTURAL SAFETY

(20) Adopt Appendix G in its entirety per 101.2:

APPENDIX G
VACUUM DRAINAGE SYSTEM

(21) Amend sections 605.22.2, 705.8.2, and 705.14.2 of the International Plumbing Code 2009 by replacing said sections with the following language:

Solvent cementing. Joint surfaces shall be clean and free from moisture. A primer that conforms to ASTM F 656 shall be applied. Solvent cement not purple in color and conforming to ASTM D 2564 or CSA CAN/CSA-B137.3, CSA CAN/CSA-B181.2 or CSA CAN/CSA-B182 shall be applied to all joint surfaces. The joint shall be made while the cement is wet and shall be in accordance with ASTM 2855. Solvent-cement joints shall be permitted above or below ground.

PART Bcr 305 CHANGES OR UPDATES TO THE INTERNATIONAL MECHANICAL CODE 2009

Bcr 305.01. International Mechanical Code 2009.

(a) Pursuant to RSA 155-A:10, V, the board hereby adopts the following changes and updates to the applicable provisions of the International Mechanical Code 2009.

(1) Amend section 101.1 of the International Mechanical Code 2009 by replacing said section with the following:

101.1 Title. These regulations shall be known as the Mechanical Code of the State of New Hampshire hereinafter referred to as "this code."

(2) Amend section 101.2 of the International Mechanical Code 2009 by replacing said section with the following:

101.2 Scope. This code shall regulate the design, installation, maintenance, alteration and inspection of mechanical systems that are permanently installed and utilized to provide control of environmental conditions and related processes within buildings. This code shall also regulate those mechanical systems, system components, equipment and appliances specifically addressed herein. Fuel gas systems shall comply with the New Hampshire Fire Code, Saf-C 6000 (NFPA 54).
Exception: Detached one- and two-family dwellings and multiple single-family dwellings (townhouses) not having more than three stories high with separate means of egress and their accessory structures shall comply with the International Residential Code.

(3) Amend section 106.5.2 of the International Mechanical Code 2009 by replacing said section with the following:

106.5.2 Fee schedule. The fees for mechanical work shall be as determined by local jurisdiction.

(4) Amend section 106.5.3 of the International Mechanical Code 2009 by deleting said section.

(5) Amend section 108.4 of the International Mechanical Code 2009 by replacing said section with the following:

108.4 Violation penalties. Any person who shall violate a provision of this code or shall fail to comply with any of the requirements thereof or who shall erect, install, alter or repair mechanical work in violation of the approved construction documents or directive of the code official, or of a permit or certificate issued under the provisions of this code, shall be subject to penalties as prescribed by law. Each day that a violation continues after due notice has been served shall be deemed a separate offense.

(6) Amend section 108.5 of the International Mechanical Code 2009 by replacing said section with the following:

108.5 Stop work orders. Upon notice from the code official that mechanical work is being done contrary to the provisions of this code or in a dangerous or unsafe manner, such work shall immediately cease. Such notice shall be in writing and shall be given to the owner of the property, or to the owner's agent, or to the person doing the work. The notice shall state the conditions under which work is authorized to resume. Where an emergency exists, the code official shall not be required to give a written notice prior to stopping the work. Any person who shall continue any work on the system after having been served with a stop work order, except such work as that person is directed to perform to remove a violation or unsafe condition, shall be subject to penalties as prescribed by law.

(7) Amend section 607.5.4 of the International Mechanical Code 2009 by replacing said section with the following:

607.5.4 Corridors/smoke barriers. A listed smoke damper designed to resist the passage of smoke shall be provided at each point a duct or air transfer opening penetrates a smoke barrier wall or a corridor enclosure required to have smoke and draft control doors in accordance with the International Building Code. Smoke dampers and smoke damper actuation methods shall comply with Section 607.5.4.1.
Exceptions:
1. Smoke dampers are not required in corridor penetrations where the building is equipped throughout with an approved smoke control system in accordance with Section 513 and smoke dampers are not necessary for the operation and control of the system.
2. Smoke dampers are not required in smoke barrier penetrations where the openings in ducts are limited to a single smoke compartment and the ducts are constructed of steel.
3. Smoke dampers are not required in corridor penetrations where the duct is constructed of steel not less than 0.019 inch (0.48 mm) in thickness and there are no openings serving the corridor.
4. Fire and smoke dampers shall not be installed in laboratory fume hood exhaust systems.
5. Fire and smoke dampers shall not be installed in hazardous exhaust systems.

(8) Amend section 607.5.5 of the International Mechanical Code 2009 by replacing said section with the following:

607.5.5 Shaft enclosures. Shaft enclosures that are permitted to be penetrated by ducts and air transfer openings shall be protected with approved fire and smoke dampers installed in accordance with their listing.
Exceptions:
1. Fire dampers are not required at penetrations of shafts where:
1.1. Steel exhaust subducts extend at least 22 inches (559 mm) vertically in exhaust shafts provided that there is a continuous airflow upward to the outdoors; or
1.2. Penetrations are tested in accordance with ASTM E 119 or UL 263 as part of the fire-resistance-rated assembly; or
1.3. Ducts are used as part of an approved smoke control system in accordance with Section 909 of the International Building Code, and where the fire damper will interfere with the operation of the smoke control system; or
1.4. The penetrations are in parking garage exhaust or supply shafts that are separated from other building shafts by not less than 2-hour fire-resistance-rated construction.
2. In Group B and R occupancies equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 of the International Building Code, smoke dampers are not required at penetrations of shafts where kitchen, clothes dryer, bathroom and toilet room exhaust openings with steel exhaust subducts, having a minimum thickness of 0.0187 inch (0.4712 mm) (No. 26 gage), extend at least 22 inches (559 mm) vertically and the exhaust fan at the upper terminus is powered continuously in accordance with the provisions of Section 909.11 of the International Building Code, and maintains airflow upward to the outdoors.
3. Smoke dampers are not required at penetrations of exhaust or supply shafts in parking garages that are separated from other building shafts by not less than 2-hour fire-resistance-rated construction.
4. Smoke dampers are not required at penetrations of shafts where ducts are used as part of an approved mechanical smoke control system designed in accordance with Section 909 of the International Building Code and where the smoke damper will interfere with the operation of the smoke control system.
5. Fire dampers and combination fire/smoke dampers are not required in kitchen and clothes dryer exhaust systems installed in accordance with this code.
6. Fire and smoke dampers shall not be installed in laboratory fume hood exhaust systems.
7. Fire and smoke dampers shall not be installed in hazardous exhaust systems.

(9) Amend section 606.2 of the International Mechanic Code 2009 by replacing said section with the following:

606.2 Where required. Smoke detectors shall be installed where indicated in Sections 606.2.1 through 606.2.4.
Exception: Smoke detectors shall not be required where air distribution systems are incapable of spreading smoke beyond the enclosing walls, floors and ceilings of the room or space in which the smoke is generated.
606.2.1 Location of smoke detectors. Smoke detectors shall be installed downstream of the air filters and ahead of any branch connections in air supply systems with a design capacity greater than 2,000 cfm (0.9 m3/s).
606.2.2 Return air systems. Smoke detectors shall be installed in return air systems with a design capacity greater than 2,000 cfm (0.9 m3/s), in the return air duct or plenum upstream of any filters, exhaust air connections, outdoor air connections, or decontamination equipment and appliances.
Exception: Smoke detectors are not required in the return air system where all portions of the building served by the air distribution system are protected by area smoke detectors connected to a fire alarm system in accordance with the International Fire Code. The area smoke detection system shall comply with Section 606.4.
606.2.23 Common supply and return air systems. Where multiple air-handling systems share common supply or return air ducts or plenums with a combined design capacity greater than 2,000 cfm (0.9 m3/s), the return air system shall be provided with smoke detectors in accordance with Section 606.2.1 and 606.2.2.
Exception: Individual smoke detectors shall not be required for each fan-powered terminal unit, provided that such units do not have an individual design capacity greater than 2,000 cfm (0.9 m3/s) and will be shut down by activation of one of the following:
1. Smoke detectors required by Sections 606.2.1, 606.2.2 and 606.2.4.
2. An approved area smoke detector system located in the return air plenum serving such units.
3. An area smoke detector system as prescribed in the exception to Section 606.2.2. In all cases, the smoke detectors shall comply with Sections 606.4 and 606.4.1.
606.2.4. Return air risers. Where return air risers serve two or more stories and serve any portion of a return air system having a design capacity greater than 15,000 cfm (7.1 m3/s), smoke detectors shall be installed at each story. Such smoke detectors shall be located upstream of the connection between the return air riser and any air ducts or plenums.

(10) Amend section 1002.2.2 of the International Mechanic Code 2009 by replacing said section with the following:

1002.2.2 Temperature limitation. Where a combination potable water-heating and space-heating system requires water for space heating at temperatures higher than 130°F (55°C), a temperature actuated mixing valve that conforms to ASSE 1017 shall be provided to temper the water supplied to the potable hot water distribution system to a temperature of 130°F (55°C) or less.

(11) Amend section 1002.4 of the International Mechanic Code 2009 by replacing said section with the following:

1002.4 Water temperature at faucets. Water temperature shall be limited to 130°F (55°C) at faucets used for personal and domestic hygiene. This shall not effect other water temperature requirements in this code.

PART Bcr 306 CHANGES OR UPDATES TO THE INTERNATIONAL ENERGY CONSERVATION CODE 2009

Bcr 306.01 International Energy Conservation Code 2009

(a) Pursuant to RSA 155-A:10, V, the board hereby adopts the following changes and updates to the applicable provisions of the International Energy Conservation Code 2009:

(1) Amend section 101.1 of the International Energy Conservation Code 2009 by replacing said section with the following:

Title. These regulations shall be known as the International Energy Conservation Code of the State of New Hampshire, hereinafter referred to as "this code."

(2) Amend section 101.5 of the International Energy Conservation Code 2009 by replacing said section with the following:

Compliance: Residential buildings shall meet the provisions of Chapter 4. Commercial buildings shall meet the provisions of Chapter 5.
Exception: Any structure three stories or less above grade plane in height and less than 4,000 ft2 (372 m2) in gross floor area is permitted to show compliance based on Chapter 4.

(3) Reserved

(4) Amend section 403.4 of the International Energy Conservation Code 2009 by replacing said section with the following:

403.4 Circulating hot water systems. All circulating service hot water piping shall be insulated to at least R- 4. Circulating hot water systems shall include an automatic or readily accessible manual switch that can turn off the hot water circulating pump when the system is not in use.

(5) Reserved

(6) Add footnote "k" to the Mass Wall R-value column of TABLE 402.1.1 Insulation and Fenestration Requirements by Component to the International Energy Conservation Code 2009 as follows:

k. Log walls complying with ICC400 and with a minimum average wall thickness of 5" or greater shall be permitted in Zones 5-8 when overall window glazing is .31 U-factor or lower, minimum heating equipment efficiency of 90 AFUE (gas) or 84 AFUE (oil), and all other component requirements are met.

PART Bcr 307 CHANGES OR UPDATES TO THE NATIONAL ELECTRICAL CODE 2008

Bcr 307.1 National Electrical Code 2008

(a) Pursuant to RSA 155-A:10, V, the board hereby adopts the following changes and updates to the applicable provisions of the National Electrical Code 2008.

(1) Effective July 1, 2008, the National Electrical Code 2005 is replaced with the National Electrical Code 2008.

(2) Effective July 1, 2008, amend section 210.5(C) of the National Electrical Code 2008 by replacing said section with the following:

Ungrounded Conductors. Where the premises wiring system has branch circuits supplied from more than one nominal voltage system, each ungrounded conductor of a branch circuit shall be identified by system at all terminations, connection, and splice points. The means of identification shall be permitted to be by separate color coding, marking tape, tagging, or other approved means. The method utilized for conductors originating within each branch-circuit panelboard or similar branch-circuit distribution equipment shall be documented in a manner that is readily available or shall be permanently posted at each branch-circuit panelboard or similar branch-circuit distribution equipment.

PART Bcr 308 CHANGES OR UPDATES TO THE INTERNATIONAL RESIDENTIAL CODE 2009

Bcr 308.01 International Residential Code 2009

(1) Amend section R101.1 of the International Residential Code 2009 by replacing said section with the following:

Title. These regulations shall be known as the Residential Code for One- and Two-Family Dwellings of the State of New Hampshire hereinafter referred to as "this code."

(2) Amend section R102.7 of the International Residential Code 2009 by replacing said section with the following:

Existing structures. The legal occupancy of any structure existing on the date of adoption of this code shall be permitted to continue without change, except as is specifically covered in this code or as is deemed necessary by the building official for the general safety and welfare of the occupants and the public.

(3) Amend section R404.1 of the International Residential Code 2009 by replacing said section with the following:

Concrete and masonry foundation walls. Concrete and masonry foundation walls shall be selected and constructed in accordance with the provisions of Section R404 or in accordance withACI 318,ACI 332,NCMATR68–A orACI 530/ASCE 5/TMS 402 or other approved structural standards.
When ACI 318, ACI 332 or ACI 530/ASCE 5/TMS 402 or the provisions of Section R404 are used to design concrete or masonry foundation walls, project drawings, typical details and specifications are not required to bear the seal of the architect or engineer responsible for design, unless otherwise required by the state law of the jurisdiction having authority.

(4) Reserved.

(5) Delete Chapter 24 of the International Residential Code 2009 in its entirety and add the following:

CHAPTER 24, FUEL GAS
Fuel gas systems shall comply with the New Hampshire Fire Code, Saf-C 6000 (NFPA 54).

(6) Reserved.

(7) Amend section P2804 of the International Residential Code 2009 by replacing said section with the following:

Maximum temperature. Hot water not to exceed 130°F (55°C) shall be supplied at all plumbing fixtures and equipment utilized for bathing, washing, culinary purposes, cleaning, laundry or building maintenance. This provision shall not supersede the requirement for protective shower valves in accordance with Section P2708.3.

(8) Amend section P2903.10 of the International Residential Code 2009 by replacing said section with the following:

P2903.10 Hose bibb. Hose bibbs subject to freezing, including the "frost-proof" type, shall be equipped with an accessible stop-and-waste-type valve inside the building so that they can be controlled and/or drained during cold periods.

(9) Amend section P3103.1 of the International Residential Code 2009 by replacing said section with the following:

Roof extension. Open vent pipes that extend through a roof shall be terminated at least 12 inches (305 mm) above the roof or 6 inches (152 mm) above the anticipated snow accumulation, whichever is greater, except that where a roof is to be used for any purpose other than weather protection the vent extension shall be run at least 7 feet (2134 mm) above the roof.

(10) Adopt Appendix G, Swimming Pools, Spas and Hot Tubs per R102.5 of the International Residential Code 2009 in its entirety.

(11) Adopt Appendix J, Existing Buildings and Structures per R102.5 of the International Residential Code 2009 in its entirety.

(11) Adopt Appendix O, Grey Water Recycling System per R102.5 of the International Residential Code 2009 in its entirety.

(12) Add footnote "l" to the Ground Snow Load column of TABLE R301.2(1) Climatic and Geographic Design Criteria.

l. The jurisdiction shall fill in this part of the table with the ground snow load from Figure R301.2(5) or from Table 1 of Ground Snow Loads for New Hampshire ERDC/CRREL TR-02-6.

(13) Amend section P2601.2 of the International Residential Code 2009 by replacing said section with the following:

P2601.2 Connections. Plumbing fixtures, drains and appliances used to receive or discharge liquid wastes or sewage shall be directly connected to the sanitary drainage system of the building or premises, in accordance with the requirements of this code. This section shall not be construed to prevent indirect waste systems.
Exception: Bathtubs, showers, lavatories, clothes washers and laundry trays are not required to discharge to the sanitary drainage system where those fixtures discharge to an approved gray water recycling system provided the system complies with Appendix O.

(14) Amend section P2801.8 of the International Residential Code 2009 by replacing said section with the following:

P2801.8 Water temperature control in piping from tankless heaters. The temperature of water from tankless water heaters intended for faucets for domestic or personal hygiene use shall be a maximum of 130°F (55°C). A tempering device conforming to ASSE 1017 shall be installed to control the water temperature. This provision shall not supersede the requirement for protective shower valves in accordance with Section 2708.3.

(15) Amend section P2801.9 of the International Residential Code 2009 by replacing said section with the following:

P2801.9 Water temperature control in piping from tankless heaters. The temperature of water from tankless water heaters intended for faucets for domestic or personal hygiene use shall be a maximum of 130°F (55°C). This provision shall not supersede the requirement for protective shower valves in accordance with Section 2708.3.

(16) Amend section P2802.2 of the International Residential Code 2009 by replacing said section with the following:

Temperature control. Where a combination water heater-space heating system requires water for space heating at temperatures exceeding 130°F (55°C) a master thermostatic mixing valve complying with ASSE 1017 shall be installed to temper the water to a temperature of 130°F (55°C) or less for domestic uses.

(17) Notwithstanding the adoption of the International Residential Code 2009 the effective date of Section R313 shall be April 1, 2012

(18) Add the following to Section R313 of the International Residential Code 2009:

R313.2.1 One- and two-family dwellings automatic fire systems. Buildings provided with an automatic residential fire sprinkler system shall be allowed to exercise all credits regarding egress in accordance with RSA 155-A:2 II (NFPA 101).

(19) Amend sections P2905.9.13 of the International Residential Code 2009 by replacing said section with the following language:

Section P2905.9.1.3 PVC Plastic pipe. A primer that conforms to ASTM F 656 shall be applied to PVC solvent cemented joints. Solvent cement for PVC plastic pipe conforming to ASTM D 2564 shall be applied to all joint surfaces.

(20) Amend sections P3003.9.2, and P3003.14.2 of the International Residential Code 2009 by replacing said sections with the following language:

Solvent cementing. Joint surfaces shall be clean and free from moisture. A primer that conforms to ASTM F 656 shall be applied. Solvent cement not purple in color and conforming to ASTM D 2564 or CSA CAN/CSA-B137.3, CSA CAN/CSA-B181.2 or CSA CAN/CSA-B182 shall be applied to all joint surfaces. The joint shall be made while the cement is wet and shall be in accordance with ASTM 2855. Solvent-cement joints shall be permitted above or below ground.

Questions and comments may be e-mailed to: bldgcodebrd@dos.nh.gov.

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