skip navigationOfficial State of NH Site
space
DOS Logo Building Code Banner
space
space

 
Chapter Bcr 300

Previous BCR300 For Your Reference Only - Current BCR300 Amendments

Updates and Changes to the State Building Code Manuals Rules

Statutory Authority: RSA 155-A:10

PART Bcr 301 PURPOSE

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

  • International Building Code 2006, as published by the International Code Council;
  • International Plumbing Code 2006, as published by the International Code Council;
  • International Mechanical Code 2006, as published by the International Code Council;
  • International Energy Conservation Code 2006, as published by the International Code Council;
  • National Electrical Code 2008, as published by the National Fire Protection Association; and
  • International Residential Code 2006, as published by the International Code Council.

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 2006

Bcr 303.01 International Building Code 2006

  • 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 2006:

(1) Effective October 12, 2007, amend Section 101.1 of the International Building Code 2006 by replacing said section with the following:

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

(2) Effective October 12, 2007, amend Section 101.4 of the International Building Code 2006 by replacing said section with the following:

Referenced codes. The other codes listed below and referenced elsewhere in this code shall be considered part of the requirements of this code to the prescribed extent of each such reference.

Gas. Fuel gas systems shall comply with the New Hampshire Fire Code (New Hampshire Code of Administrative Rules SAF-C 6000).

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.

Plumbing. The provisions of the International Plumbing Code shall apply to the installation, alterations, repairs 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.

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) Effective October 12, 2007, amend Section 102.6 of the International Building Code 2006 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.

(4) Effective October 12, 2007, amend Table 503 Allowable Height and Building Areas of the International Building Code 2006 by replacing said table with the following:

5) Effective October 12, 2007, amend Section 506 of the International Building Code 2006 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:

  • The automatic sprinkler system increase shall not apply to buildings with an occupancy in Use Group H-1.
  • The 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

Number
of Stories
Type of Construction
IA
IB
1l Others
1 None None None
2 None None None
3 None 5% 20%
4 None 10% 20%
5 None 15% 30%
6 None 20% 40%
7 None 25% 50%
8 None 30% 60%
9 None 35% 70%
10 None 40% 80%

(6) Effective October 12, 2007, amend Section 716.5.3 of the International Building Code 2006 by replacing said section with the following:

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 ASTME119 as part of the 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 wall thickness of at least 0.019 inch (0.48 mm); and

2.2. That 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 and smoke dampers shall not be installed in laboratory fume hood exhaust systems.

6. Fire and smoke dampers shall not be installed in hazardous exhaust systems.

(7) Effective October 12, 2007, amend Section 716.5.4.1 of the International Building Code 2006 by replacing said section with the following:

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) Effective October 12, 2007, amend Section 2902.02 of the International Building Code 2006 by replacing said section with the following:

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 employee facilities shall not be required in occupancies in which 15 or less people are employed.

5. 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) Effective November 14, 2008, the board hereby adopts in its entirety Appendix C of the International Building Code 2006, Group U, Agricultural Buildings.

(10) Effective February 13, 2009, amend section 3410.2 of the International Building Code 2006 by replacing said section with the following:

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 3407. The provisions in Sections 3410.2 through 3410.2.5 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.

PART Bcr 304 CHANGES OR UPDATES TO THE INTERNATIONAL PLUMBING CODE 2006

Bcr 304.1. International Plumbing Code 2006.

(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 2006.

(1) Effective October 12, 2007, amend section 101.1 of the International Plumbing Code 2006 by replacing said section with the following:

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

(2) Effective October 12, 2007, amend section 101.2 of the International Plumbing Code 2006 by replacing said section with the following:

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 State Fire Code (NH Code of Administrative Rules SAF-C 6000). 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) Effective October 12, 2007, amend section 104.2 of the International Plumbing Code 2006 by replacing said section with the following:

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) Effective October 12, 2007, amend section 106.6.2 of the International Plumbing Code 2006 by replacing said section with the following:

Fee schedule. The fees for all plumbing work shall be as prescribed NH Code of Administrative Rules Plu 306.01 and as determined by the local jurisdiction.

(5) Effective October 12, 2007, amend section 106.6.3 of the International Plumbing Code 2006 by deleting said section.

(6) Effective October 12, 2007, amend section 108.4 of the International Plumbing Code 2006 by replacing said section with the following:

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 the penalty provisions prescribed by RSA 155-A:8.

(7) Effective October 12, 2007, amend section 108.5 of the International Plumbing Code 2006 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 the penalty provisions prescribed by RSA 155- A:8.

(8) Effective October 12, 2007, amend section 305.6.1 of the International Plumbing Code 2006 by replacing said section with the following:

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.

(9) Effective October 12, 2007, amend section 403.2 of the International Plumbing Code 2006 by replacing said section with the following:

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 employee facilities shall not be required in occupancies in which 15 or less people are employed.

5. 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.

(10) Effective October 12, 2007, amend section 416.5 of the International Plumbing Code 2006 by deleting said section.

(11) Effective October 12, 2007, amend section 419.1 of the International Plumbing Code 2006 by replacing said section with the following:

Approval. Urinals shall conform to ANSI Z124.9, ASMA A112.19.2M, CSA B45.1, or CSA B45.5. Urinals shall conform to the water consumption requirements of Section 604.4. Water supplied urinals shall conform to the hydraulic performance requirements of ASME A112.19.6, CSA B45.1 or CSA B45.5. If a no-water urinal is installed, the drainage and water supply system shall be sized and installed as if a water supplied urinal were in place.

(12) Effective November 16, 2007, amend section 501.2 of the International Plumbing Code 2006 by replacing said section with the following:

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 (54°C) or less. The potability of the water shall be maintained throughout the system.

(13) Effective November 16, 2007, amend section 501.6 of the International Plumbing Code 2006 by replacing said section with the following:

Water temperature control in piping from tankless heaters. The temperature of water from tankless heaters shall be a maximum of 130°F (54°C) when intended for domestic uses. When a tempering device is used to limit the maximum water distribution system temperature it shall comply with ASSE 1017. This provision shall not supersede the requirement for protective shower valves in accordance with Section 424.3.

(14) Effective November 16, 2007, amend section 605.22.2 of the International Plumbing Code 2006 by replacing said section with the following:

Solvent cementing. Joint surfaces shall be clean and free from moisture. A primer that conforms to ASTM F 656 shall be applied. Solvent cement conforming to ASTM D 2564 or CSA CAN/CSA-B137.3 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.

(15) Effective October 12, 2007, amend section 701.2 of the International Plumbing Code 2006 by replacing said section with the following:

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 NH RSA 485-A:29-44.

(16) Effective October 12, 2007, amend section 705.8.2 of the International Plumbing Code 2006 by replacing said section with the following:

Solvent cementing. Joint surfaces shall be clean and free from moisture. A primer that conforms to ASTM F 656 shall be applied. Solvent cement 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.

(17) Effective October 12, 2007, amend section 705.14.2 of the International Plumbing Code 2006 by replacing said section with the following:

Solvent cementing. Joint surfaces shall be clean and free from moisture. A primer that conforms to ASTM F 656 shall be applied. Solvent cement 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.

(18) Effective October 12, 2007, amend section 904.1 of the International Plumbing Code 2006 by replacing said section with the following:

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.

PART Bcr 305 CHANGES OR UPDATES TO THE INTERNATIONAL MECHANICAL CODE 2006

Bcr 305.01. International Mechanical Code 2006.

(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 2006.

(1) Effective October 12, 2007, amend section 101.1 of the International Mechanical Code 2006 by replacing said section with the following:

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

(2) Effective October 12, 2007, amend section 101.2 of the International Mechanical Code 2006 by replacing said section with the following:

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 (NH Code of Administrative Rules SAF-C 6000).

            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 2006.

(3) Effective October 12, 2007, amend section 106.5 of the International Mechanical Code 2006 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) Effective October 12, 2007, amend section 106.5.3 of the International Mechanical Code 2006 by deleting said section.

(5) Effective October 12, 2007, amend section 108.4 of the International Mechanical Code 2006 by replacing said section with the following:

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 the penalty provisions prescribed by RSA 155-A:8.

(6) Effective October 12, 2007, amend section 108.5 of the International Mechanical Code 2006 by replacing said section with the following:

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 the penalty provisions prescribed by RSA 155-A:8.

(7) Effective October 12, 2007, amend section 510.6 of the International Mechanical Code 2006 by replacing said section with the following:

Penetrations. Penetrations of structural elements by a hazardous exhaust system shall conform to Sections 510.6.1 through 510.6.4.

Exception: Duct penetrations within H-5 occupancies as allowed by the International Building Code 2006.

Fire and smoke dampers. Fire and smoke dampers are prohibited in hazardous exhaust ducts.

Floors. Hazardous exhaust systems that penetrate a floor/ceiling assembly shall be enclosed in a fire-resistance-rated shaft constructed in accordance with the International Building Code 2006.

(8) Effective November 16, 2007, amend section 607.5.4 of the International Mechanical Code 2006 by replacing said section with the following:

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.

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.

(1) Effective November 16, 2007, amend section 607.5.5 of the International Mechanical Code 2006 by replacing said section with the following:

Shaft enclosures. Shaft enclosures that are permitted to be penetrated by ducts and air transfer openings shall be protected with listed 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;

1.2. Penetrations are tested in accordance with ASTM E 119 as part of the fire-resistance-rated assembly;

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 wall thickness of at least 0.019 inch (0.48 mm) 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 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 of the International Building Code and where the smoke damper will interfere with the operation of the smoke control system.

5. Fire and smoke dampers shall not be installed in laboratory fume hood exhaust systems.

6. Fire and smoke dampers shall not be installed in hazardous exhaust systems.

PART Bcr 306 CHANGES OR UPDATES TO THE INTERNATIONAL ENERGY CONSERVATION CODE 2006

Bcr 306.01 International Energy Conservation Code 2006

(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 2006:

(1) Effective October 12, 2007, amend section 101.1 of the International Energy Conservation Code 2006 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) Effective October 12, 2007, amend section 101.5 of the International Energy Conservation Code 2006 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.

Low energy buildings. The following buildings, or portions thereof, separated from the remainder of the building by building thermal envelope assemblies complying with the code shall be exempt from the building thermal envelope provisions of this code:

1. Those with a peak design rate of energy usage less than 3.4 Btu/h.ft2 (10.7 W/m2) or 1.0 watt/ft2 (10.7 W/m2) of floor area for space conditioning purposes.

2. Those that do not contain conditioned space.

3. Greenhouses that are provided with a separate temperature control system.

(3) Effective October 12, 2007, amend Table 301.1 of the International Energy Conservation Code 2006 by replacing said table with the following:

TABLE 301.1

CLIMATE ZONES BY STATE, COUNTY AND TERRITORIES

NEW HAMPSHIRE

Zone 6

(4) Effective October 12, 2007, amend section 403.4 of the International Energy Conservation Code 2006 by replacing said section with the following:

Circulating hot water systems. All circulating service hot water piping shall be insulated to at least R-2. 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.

403.4.1. Circulating domestic hot water pipes shall be insulated to a minimum of R-4 and non-circulating domestic hot water pipes in unconditioned spaces shall be insulated to a minimum of R-4.

(5) Effective October 12, 2007, amend section 504.5 of the International Energy Conservation Code 2006 by replacing said section with the following:

Pipe insulation. For automatic-circulating hot water systems, piping shall be insulated with 1 inch (25 mm) of insulation having a conductivity not exceeding 0.27 Btu per inch/h × ft2 × °F (1.53 W per 25 mm/m2 × K). The first 8 feet (2438 mm) of piping in noncirculating systems served by equipment without integral heat traps shall be insulated with 0.5 inch (12.7 mm) of material having a conductivity not exceeding 0.27 Btu per inch/h × ft2 × °F (1.53 W per 25 mm/m2 × K).

504.5.1. Circulating domestic hot water pipes shall be insulated to a minimum of R-4 and non-circulating domestic hot water pipes in unconditioned spaces shall be insulated to a minimum of R-4.

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

Bcr 307.1 National Electrical Code 2008

  • 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.
  • 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 2006

Bcr 308.01 International Residential Code 2006

Pursuant to RSA-A:10, V, the board hereby adopts the following changes and updates to the applicable provisions of the International Residential Code 2006.

(1) Effective October 12, 2007, amend section R101.1 of the International Residential Code 2006 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) Effective October 12, 2007, amend section R102.7 of the International Residential Code 2006 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) Effective November 16, 2007, amend section R404.1 of the International Residential Code 2006 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 with ACI 318, ACI 332, NCMATR68–A or ACI 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) Effective October 12, 2007, amend Table N1101.1 of the International Residential Code 2006 by replacing said table with the following:

TABLE N1101.2

CLIMATE ZONES BY STATES AND COUNTIES

NEW HAMPSHIRE

Zone 6

(5) Effective October 12, 2007, amend Chapter 24 of the International Residential Code 2006 by replacing said chapter with the following:

Fuel gas systems shall comply with the New Hampshire State Fire Code (NH Code of Administrative Rules SAF-C 6000).

(6) Effective November 16, 2007, amend section P2603.6.1 of the International Residential Code 2006 by replacing said section with the following:

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.

(7) Effective November 16, 2007, amend section P2804 of the International Residential Code 2006 by replacing said section with the following:

Maximum temperature. Hot water not to exceed 130°F (54°C) shall be supplied to 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) Effective November 16, 2007, amend section P2903.10 of the International Residential Code 2006 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) Effective November 16, 2007, amend section P3103.1 of the International Residential Code 2006 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) Effective November 16, 2007, the board adopts Appendix G, Swimming Pools, Spas and Hot Tubs of the International Residential Code 2006.

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

   
  New Hampshire Department of Safety | 33 Hazen Drive | Concord, NH 03305
TDD Access: Relay NH 1-800-735-2964
space
nh NH.gov | Privacy Policy | Accessibility Policy