N.H. Admin. Code § Saf-C 3303.01

Current through Register No. 50, December 12, 2024

Section Saf-C 3303.01 - Applicable Codes

(a) All modular buildings and building components installed in New Hampshire shall conform to the state building code, as adopted, amended, and defined in RSA 155-A:1, IV, which shall consist of the following, as applicable:

(1) The modular building code;

(2) The National Electrical Code;

(3) The International Building Code;

(4) The International Residential Code;

(5) The International Plumbing Code;

(6) The International Mechanical Code;

(7) The International Energy Conservation Code; and

(8) The International Existing Building Code.

(b) In addition to (a) above, all modular buildings and building components installed in New Hampshire shall conform to the state fire code, Saf-C 6000, as adopted and amended.

(c) In the event of a conflict between the applicable codes set forth in (a) above, the provisions of the particular code that are the most stringent shall prevail, unless specifically set forth otherwise in the codes or these rules.

(d) Notwithstanding (a) above, interior stairs, including contiguous stair configurations that serve a basement, for one and 2 family dwellings shall comply with the following:

(1) The international residential code, as adopted and amended pursuant to RSA 155-A; or

(2) The following configuration:

a. The maximum riser height shall be 8 1/4 inches and the minimum tread depth shall be 9 inches;

b. The riser height shall be measured vertically between leading edges of the adjacent treads;

c. The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread's leading edge;

d. The walking surface of treads and landings of a stairway shall be sloped no steeper than one vertical unit in 48 units horizontal or a 2% slope;

e. The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch or 9.5 mm; and

f. The greatest tread depth within any flight of stairs shall not exceed the smallest by more than 3/8 inches or 9.5 mm.

N.H. Admin. Code § Saf-C 3303.01

#5439, eff 7-24-92; ss by #6325, eff 8-24-96; ss by #6885, eff 11-18-98; amd by #8012, eff 12-19-03; ss by #8741, INTERIM, eff 11-18-06, EXPIRED: 5-17-07

New. #9752, eff 7-9-10

Amended by Volume XXXIX Number 16, Filed April 18, 2019, Proposed by #12737, Effective 3/8/2019, Expires 3/8/2029.