510-RICR-00-00-2
510-RICR-00-00-2. RISBC-2 Rhode Island State One and Two Family Dwellings (version Amendment, 07/01/2004 to 01/01/2006)
RHODE ISLAND
STATE BUILDING CODE
Rhode Island
One and Two Family Dwelling Code
Regulation SBC-2-2004
July 1, 2004
Replaces Existing Regulation SBC-2-02
Dated September 1, 2002
STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS
Department of Administration
BUILDING CODE STANDARDS COMMITTEE
One Capitol Hill
Providence, Rhode Island 02908-5859
(401) 222-3033
FAX NO (401) 222-2599
8th EDITION
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State Building Code
Rhode Island One & Two Family Dwelling Code
Regulation SBC-2-2004
July 1, 2004
The Building Code Standards Committee, in accordance with the rule making authority of
Title 23, Chapter 23-27.3, Section 109.1, paragraphs a through c inclusive hereby adopts
the provisions of the International Residential Code 2003 edition, as published by the
International Code Council, Inc., as the Rhode Island One & Two Family Dwelling Code,
together with the amendments thereto hereinafter set forth to the chapters and sections of
said code.
All references to the International Code Council Companion Codes are deleted (except for
the International Fire Code) and referred to the appropriate specific Rhode Island
Regulations.
Editorial Note: Code users please note:
When purchasing or using the IRC 2003 code, please take note of the particular printing
edition. Errata to that printing edition is available on-line directly at no charge at
www.iccsafe.org/cs/codes/errata.html or call the office of the State Building Code
Commissioner at 401-222-3033 for further information.
The International Residential Code, 2003 Edition, is protected by the copyright that has
been issued to the ICC. As a result, the State One and Two Family Dwelling Code is not
available in complete form to the public in an electronic format. The International
Residential Code 2003 edition that is referred to within is contained in a printed volume
and is also in an electronic format that have been published by the ICC under an exclusive
license.
The Office of the State Building Code Commissioner has purchased volumes of these codes
and they shall be distributed to Rhode Island cities and towns during the month of June
2004 so that local officials will have access to the code prior to the implementation of
these rules on July 1, 2004.
In order to assure public access to this code the Office of the State Building Code
Commissioner shall provide a copy of this code to the Rhode Island State Library, which is
located on the second floor of the State House. In addition, all codes may be viewed
during business hours at the Department of Administration’s Library which is located on
the ground floor of the William E. Powers Building, One Capitol Hill, Providence.
The Legislative Regulation Committee approved adoption of this code on April 21, 2004.
By:
Daniel R. DeDentro
Executive Secretary
Rhode Island Building Code Standards Committee
May 19, 2004
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STATE OF RHODE ISLAND As of 12/2/03
BUILDING CODE STANDARDS COMMITTEE
CHAIRMAN
VICE CHAIRMAN
James Carlson
Robert E. DeBlois, Jr.
Public Member
Builder
EXECUTIVE COMMITTEE
William Howe
Fire Official
Dana Newbrook, RA
Architect
John Maloney
Building Official
Russell Brown
Frank Montanaro
Building Official
State Representative
G. Thomas Chabot
John Pagliaro
Electrical Contractor
Building Official
Randall Collins, Jr., RLA
David F. Palmisciano
Landscape Architect
Building Trades Council
Bruce L. Davey, PE
Gordon W. Preiss, PE
Structural Engineer
Mechanical Engineer
Paul DePace, PE
Marie Stoeckel
Representative for the Disabled
Public Health Official
Allen P. Durand
Stephen C. Turner, PE
Builders Trades Council
Public Member
Stephen Durkee, RA
J. Robert Wahlberg
Architect
Builder
Donald Gagnon
Thomas Coffey
Minimum Housing Inspector
Legal Counsel
John D. Gaskell, PE
Daniel R. DeDentro, RA
Electrical Engineer
State Building Commissioner
Executive Secretary
Vacant
Master Plumber
Vacant
State Senator
Marc Lowenstein, RA
Representative for the Disabled
Vacant – Electrical Inspector
ii
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STATE BUILDING CODE REGULATIONS – 2004
The following list includes all regulations promulgated by the State Building Code
Standards Committee. All regulations are available for a fee at the State Building
Commission.
1.
Building Code…………………………………………
SBC-1-2004
2.
One and Two Dwelling Family
Dwelling Code………………………………………...
SBC-2-2004
3.
Plumbing Code………………………………………..
SBC-3-2004
4.
Mechanical Code……………………………………...
SBC-4-2004
5.
Electrical Code………………………………………..
SBC-5-2002
6.
Reserved…………………………………………...….
SBC-6
7.
Reserved…………. …………………………………..
SBC-7
8. State Energy Code…………………………………….
SBC-8-2004
9. Enforcement and Implementation
Procedures for Projects Under
the Jurisdiction of the State
of Rhode Island……………………………………….
SBC-9
10. Code Interpretations…………………………………..
SBC-10
11. Certification of Building Officials,
Building, Electrical, Plumbing and
Mechanical Inspectors………………………………..
SBC-11-2002
12. New Materials and Methods
of Construction……………………………………….
SBC-12
13. State Building Code
For Existing Schools………………………………….
SBC-13
14.
Reserved
15. Reserved
16. Reserved
17. Public Buildings Accessibility
Meeting Standards…………………………………….
SBC-17
18. Native Lumber………………………………………...
SBC-18
19. Fuel Gas Code…………………………………………
SBC-19-2004
7/1/04
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1
IRC 2003
Format: These Code changes follow numbering sequence and topics of IRC 2003 (1st
printing). All provisions of IRC 2003 are retained unless indicated as deleted or revised.
Published errata is available from the publisher via website www.iccsafe.org (edit rev.).
Chapter 1
R101.1
Delete and substitute the following:
R101.1Title. These provisions shall be known as the Rhode Island One and
Two Family Dwelling Code SBC-2-2004, and shall be cited as such and
will be referred to herein as “this code”.
R101.2
Delete and substitute the following:
R101.2Scope. The provisions of this code shall apply to the construction,
alteration, enlargement, replacement, repair, equipment, use and occupancy
and location of detached one-and two-family dwellings and multiple single-
family dwellings (townhouses) not more than three stories in height with a
separate means of egress, and their accessory structures.
Exception: Existing one and two family buildings undergoing a change of
use shall comply with the provisions of the State Building Code SBC-1 or
State Rehabilitation Code SRC-1 as applicable.
R102.5
Delete and substitute the following:
R102.5Appendices: A, B, C & D are informative only and not part of this
code. Appendices E, G, H, J, K, and L apply. Appendices F and I are
deleted. New RI Appendix M is added.
R102.7
Delete and substitute the following:
R102.7 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 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.
R105.2
Delete R105.2 and substitute the following:
R105.2 Work exempt from permit. Permits shall not be required for the
following. Exemption from the permit requirements of this code shall not
be deemed to grant authorization for any work to be done in any manner in
2
violation of the provisions of this code or any other laws or ordinances of
this jurisdiction.
Building:
1.
One-story detached accessory structures provided the floor area does not exceed 64
square feet (18.58 m2).
2.
Fences not over 6 feet (1829 mm) high.
3.
Retaining walls that are not over 32” in height measured from the lower finished
grade to the top of the wall, unless supporting a surcharge.
Exception: 1. All cast-in-place concrete retaining walls greater than 24” in
height shall require a permit.
2. All engineered masonry retaining wall systems shall be
installed in accordance with manufacturer’s installation
instructions.
4.
Water tanks supported directly upon grade if the capacity does not exceed 5,000
gallon (18 927L) and the ratio of height to diameter or width does not exceed 2 to
1.
5.
Sidewalks and driveways not more than 30 inches (762 mm) above adjacent grade
and not over any basement or story below.
6.
Painting, papering, tiling, carpeting, cabinets, counter tops and similar finish work.
7.
Prefabricated swimming pools that are less than 24 inches (610mm) deep, and man-
made landscape ponds of any depth.
8.
Swings and other playground equipment, and play structures less than 64 square
feet.
9.
Window awnings supported by an exterior wall.
10.
Replacement window sash installations.
Exception: Replacement window installations that include a frame and
sash(es) require a permit.
Electrical:
Maintenance: A permit shall not be required for replacement of lamps, receptacles,
devices, or fixtures, including the connection of portable electrical equipment to approved
permanently installed receptacle.
Gas:
1.
Replacement of any minor part or appliance that does not alter approval of
equipment or make such equipment unsafe.
Mechanical:
1.
Portable heating appliance.
2.
Portable ventilation appliances.
3.
Portable cooling unit.
3
4.
Steam, hot or chilled water piping within any heating or cooling equipment
regulated by this code.
5.
Replacement of any minor part that does not alter approval of equipment or make
such equipment unsafe.
6.
Portable evaporative cooler.
7.
Self-contained refrigeration systems containing 10 pounds (4.54 kg) or less of
refrigerant or that are actuated by motors of 1 horsepower (746 W) or less.
Plumbing:
The stopping of leaks in drains, water, soil, waste or vent pipe; provided, however, that if
any concealed trap, drainpipe, water, soil, waste or vent pipe becomes defective and it
becomes necessary to remove and replace the same with new material, such work shall be
considered as new work and a permit shall be obtained and inspection made as provided in
this code.
The clearing of stoppages or the repairing of leaks in pipes, valves or fixtures, and the
removal and reinstallation of water closets, provided such repairs do not involve or require
the replacement or rearrangement of valves, pipes or fixtures.
R105.3.1.1
Delete and substitute the following:
R105.3.1.1
Substantially improved or substantially damaged existing
buildings or structures. For application for reconstruction, rehabilitation,
addition, or other improvement of existing buildings or structures located in
an area prone to flooding as established by Table R301.2 (1) and
community FIRM documents, the value of the proposed work or repair shall
be provided by the owner or authorized agent and reviewed by the Building
Official. If the Building Official determines that the proposed work equals
or exceeds 50% of the market value of the building or structure, the permit
application will not be approved, unless the applicant files a request for
specific variances or an appeal from the Building Official’s decision. The
Board of Appeals shall approve, deny or modify the appeal or request for
variances and the decision shall be made part of the record for application
and further enforcement.
R107
Delete and substitute the following new section R107 Fabric Structures.
Section R107 Fabric Structures
R107.1
Fabric Structures: Fabric structures shall be located in
accordance with applicable local zoning code provisions. Permits shall be
required for any structure over 200 sq. ft. in area and shall be installed in
accordance with manufacturer’s installation instructions. Fabric structures
over 200 sq. ft. in area but less than 400 sq. ft in area shall have engineered
wind anchors installed to withstand design wind loads and shall not remain
in place for more than 6 months in any 12 consecutive month period. All
structures over 400 sq. ft. and/or intended to be in place for more than a 12
4
month period, shall only be approved pending a satisfactory decision by the
local Building Code Board of Appeals, unless full code compliance for
permanent structures in all respects is demonstrated to the satisfaction of the
local building official.
R110.2
Delete R110.2 and substitute the following:
R110.2 Change of Use. Change of use shall only be made in accordance
with the provisions of the State Building Code SBC-1.
Add the following section R115:
R115
Other
R115.1 Other Administrative issues. The Administrative provisions of
RI GL 23-27.3-100 et al are included herein into the balance of this Chapter
1 Administration.
Delete the following IRC 2003 sections and refer to appropriate Sections of
Article 1 SBC-1 and GL 23-27.3-100 et al.
R103.1, R103.2, R103.3, R104.6, R104.7, R104.8, R105.2.2, R105.3.1,
R105.3.2, R105.4, R105.5, R105.6, R105.7, R106.3.1, R106.3.2, R106.3.3,
R106.5, R107.1, R107.2, R107.3, R107.4, R108.1, R108.2, R108.3, R108.4,
R108.5, R112.1, R112.2, R112.2.1, R112.2.2, R112.3, R112.4, R113.1,
R113.2, R113.3, R113.4, R114.1, R114.2.
Retain the following IRC 2003 Sections:
R101.3, R102.1, R102.2, R102.3, R102.4, R102.6, R104.10, R102.7.1,
R104.1, R104.2, R104.3, R104.4, R104.5, R104.9, R104.9.1, R104.10.1,
R104.11, R104.11.1, R105.1, R105.2.1, R105.2.3, R105.3, R105.8, R106.1,
R106.1.1, R106.1.2, R106.1.3, R106.2, R106.3, R106.4, R109.1, R109.1.1,
R109.1.2, R109.1.3, R109.1.4, R109.1.5, R109.1.5.1, R109.1.6, R109.2,
R109.3, R109.4, R110.1, R110.3, R110.4, R111.1, R111.2, R111.3.
Delete the following IRC 2003 Section without substitution:
R110.5.
5
Chapter 2
To Chapter 2 Definitions add the following:
Fabric Structure: Structures utilizing wood, metal or plastic frames and covered with
cloth, canvas, or plastic material, excluding tents, agricultural greenhouses, and furnishings
such as umbrellas, awnings or portable shade canopies, and accessory to the residential use
of the primary structure. If used for non-residential accessory use, see State Building Code
SBC-1-2004.
Sleeping Unit: A room or space in which people sleep, which can also include permanent
provisions for living, eating, and either sanitation or kitchen facilities but not both. Such
rooms and spaces that are also part of a dwelling unit are not sleeping units.
6
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7
Chapter 3
R301.2
Delete and substitute the following:
R301.2 Climatic and geographic designs criteria. Buildings shall be
constructed in accordance with the provisions of this code. Additional criteria is
established and set forth in Table R301.2 (1)
Table R301.2(1)
Delete and substitute the following:
Table R301.2(1)
Ground Snow Load
Wind
Seismic Design Criteria
30psf1, 2
See figure R301.2(4)
None4
Weathering
Frost line depth2,3 Termite
Decay
Severe
40”
Moderate to Heavy
Slight to Moderate
Winter design Temp Ice Shield
Flood Hazards Air Freezing Mean Annual
Underlayment
Index Temperature
Required
9o F
Yes Yes 1200 o 50 o F
(see Community
FIRMS)
NOTES:
1.
Roof live load and roof snow load are not additive
2.
New Shoreham frost depth is 30” and Ground Snow Load is 25 psf.
3.
Requirements for frost depth footings for accessory attached and detached
structures are as follows:
a.
Structures and detached accessory buildings of 0-199 sq. feet do not require
any frost depth foundations or footings. Two ground screw anchors or other
means approved by the building official shall be provided to resist
overturning.
b.
Accessory attached structures such as decks, platforms or landings shall
have footings extending to 3’-4” below grade. Exterior stairs and steps off
decks, balconies and platforms greater than 30” above grade shall have
stringer supports extending to 12” below grade, and shall be supported and
secured to prevent lateral displacement or vertical collapse due to grade
changes.
4.
Seismic design criteria is not required for buildings and structures regulated by this
code.
8
R301.2.1
Delete and substitute the following:
R301.2.1 Wind limitations. Buildings and portions thereof shall be
limited by wind speed, as defined in Table R301.2(1), and construction
methods in accordance with this code. Basic wind speeds shall be
determined from Table R301.2(1) and Figure R301.2(4). Where different
construction methods and structural materials are used for various portions
of a building, the applicable requirements of this sections for each portion
shall apply. Where loads for windows, skylights and exterior doors are not
otherwise specified, the loads listed in Table R301.2(2) adjusted for height
and exposure per Table R301.2(3), shall be used to determine design load
performance requirements for windows and doors.
Exception: All accessory structures less than 200 sq. ft. in area.
R301.2.1.1
Delete and substitute the following:
R301.2.1.1 Design criteria. Construction in regions where the basic wind
speeds from Figure R301.2(1) equal or exceed 110 miles per hour (177.1
km/h) shall be designed in accordance with one of the following.
1.
American Forest and Paper Association (AF&PA) Wood Frame
Construction Manual for One- and Two-Family Dwellings
(WFCM); or
2.
Southern Building Code Congress International Standard for
Hurricane Resistant Residential Construction (SSTD 10); or
3.
Minimum Design Loads for Buildings and Other Structures (ASCE-
7);
4.
Cold-formed steel construction shall be designed in accordance with
the provisions of this code.
5.
Concrete construction shall be designed in accordance with the
provisions of this code.
6.
For all communities located in the 110 MPH and 120 MPH wind
zones, the prescriptive criteria in Appendix M may be used for
buildings and structures in lieu of items 1-3 above:
Exceptions to item 6:
1.
Buildings and structures of any size in 110 MPH or 120 MPH wind zones
located in a V zone as determined by community FIRMS.
2.
Two or more story buildings and structures of any size located in 120 MPH
wind zone with more than 20% exterior fenestration.
3.
Two or more story structures with a building height greater than 33’ as
measured from Grade Plane to the average height of the highest roof
surface.
9
10
11
4.
Any two or more story structure or building with opening fenestration
greater than 40% on any one wall.
R301.2.1.2
Delete section R301.2.1.2 and substitute the following:
301.2.1.2 Internal pressure. Windows in buildings located in Wind
Zone 3 shall have glazed openings protected from windborne debris or the
building shall be designed as a partially enclosed building in accordance
with the International Building Code. Glazed opening protection for
windborne debris shall meet the requirements of the Large Missile Test of
ASTM E 1996 and of ASTM E 1886 referenced therein.
Exception: Wood structural panels with a minimum of thickness of 7/16
inch (11.1 mm) and a maximum span of 8 feet (2438 mm) shall be
permitted for opening protection in one- and two-story buildings. Panels
shall be precut to cover the glazed openings with attachment hardware
provided. Attachments shall be provided in accordance with Table
R301.2.1.2 or shall be designed to resist the components and cladding loads
determined in accordance with the provisions of the International Building
Code.
R303.6
Delete section R303.6 and substitute the following.
R303.6
Stairway illumination. Except for bulkhead-covered stairs from
basements, all interior and exterior stairways shall be provided with a
means to illuminate the stairs, including the landings and treads. Interior
stairways shall be provided with an artificial light source located in the
immediate vicinity of each landing of the stairway. Exterior stairways shall
be provided with an artificial light source located in the immediate vicinity
of the top landing of the stairway. Exterior stairways providing access to a
basement from the outside grade level shall be provided with an artificial
light source located in the immediate vicinity of the bottom landing of the
stairway.
Exception: An artificial light source is not required at the top and bottom
landing, provided an artificial light source is located directly over each
stairway section.
R303.8
Delete without substitution
R305.1
Delete R305.1 and substitute the following:
R305.1 Minimum Height. Habitable rooms, except kitchens, shall have a
ceiling height of not less than 7 feet 6 inches (2286 mm) for at least 50 per
cent of their required areas. Not more than 50 percent of the required area
may have a sloped ceiling less than 7 feet 6 inches (2286 mm) in height
12
with no portion of the required area less than 5 feet (1524 mm) in height. If
any room has a furred ceiling, the prescribed ceiling height is required for at
least 50 percent of the area thereof, but in no case shall the height of the
furred ceiling be less than 7 feet (2134 mm)
Exceptions:
1.
Beams and girders spaced not less than 4 feet (1219 mm) on center may
project not more than 6 inches (153 mm) below the required ceiling height.
2.
All other rooms including kitchens, baths and hallways may have a ceiling
height of not less than 7 feet (2134 mm) measured to the lowest projection
from the ceiling.
3.
Ceiling heights in basements without habitable spaces may not be less than
6 feet 8 inches (2032 mm) clear except for under beams, girders, ducts or
other obstructions where the clear height shall be 6 feet 4 inches (1931
mm).
4.
Bathrooms shall have a minimum ceiling height of 6 feet 8 inches (2036
mm) over the fixture and at the front clearance area for fixtures as shown in
Figure R307.2. 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.
5.
Habitable basements used only as recreation rooms shall have a ceiling
height of not less than 7 feet, except for under beams, girders, ducts and
soffits, etc. where the clear height shall be not less than 6’-4”.
6.
Existing basements renovated for habitable rooms except sleeping areas
shall have a minimum ceiling height of 6’-8” except for under beams,
girders, ducts, soffits where the clear height shall be not less than 6’-4”.
The required ceiling height of 6’-8” shall occur over a minimum of 50% of
the actual room area.
R307
Add the following new subsection
R-307.3 Privacy required. Every water closet, bathtub or shower
required by this code shall be installed in a room which will afford privacy
to the occupant.
R309.3
Delete IRC R309.3 and substitute 309.3 as follows:
R309.3 Floor Surface: Garage and carport floor surfaces shall be of
approved noncombustible material. That area of floor used for parking of
automobiles or other vehicles shall be sloped to facilitate the movement of
liquids toward the main vehicle entry doorway. Where approved by the
building official, other means of dispersing spilled liquids from the area
may be used to prevent the flow of liquids through doorways into adjoining
enclosed areas of dwelling.
13
Exception: Floor drains must discharge to open finish grade only.
The sills of all door openings between the garage and adjacent interior
spaces shall be raised not less than two inches from above the garage floor,
or the garage floor shall be installed at a lower elevation so as to provide a
minimum four inch step into the adjacent space.
R310.1
Delete R310.1 and substitute the following:
R310.1 Emergency escape and rescue required. Basements with
habitable space and every sleeping room shall have at least one openable emergency
escape and rescue window or exterior door opening for emergency escape and rescue.
Where basements contain one or more sleeping rooms, emergency egress and rescue
openings shall be required in each sleeping room, but shall not be required in adjoining
areas of the basement. Where openings are provided as a means of escape and rescue they
shall have a sill height of not more than 44 inches (1118 mm) above the floor. Where a
door opening having a threshold below the adjacent ground elevation serves as an
emergency escape and rescue opening and is provided with a bulkhead enclosure, the
bulkhead enclosure shall comply with Section R310.3 . The net clear opening dimensions
required by this section shall be obtained by the normal operation of the window or door
opening from the inside. Escape and rescue window openings with a finished sill height
below the adjacent ground elevation shall be provided with a window well in accordance
with Section R310.2.
Exception: Basements with habitable space not used for bedrooms shall not
require an emergency escape under any one of the following two conditions:
1.
Residential sprinkler systems conforming to NFPA 13D latest edition shall
be installed throughout all areas of the basement or cellar, or
2.
Fuel-fired equipment shall be separated from the habitable room and means
of egress with one (1) hour rated construction and 20 minute rated opening
protectives.
R310.1.1
Delete R310.1.1 and substitute the following:
R310.1.1 Minimum opening area. All emergency and rescue openings
shall have a minimum net clear opening of 4.4 square feet. Where the net
clear opening dimensions specified below can be met only with window
sashes easily removable without the use of keys, tools or excessive force,
the net clear opening area shall be 5.7 square feet.
R310.5 Add the following new section R310.5
R310.5 Basement or Cellar Windows: Except as may be otherwise
provided for habitable or occupiable rooms, at least two (2) operable
14
windows 12” x 32” nominal size shall be installed reasonably remote from
each other. Security devices shall not unreasonably impede the use of these
windows for light, ventilation or firefighting purposes.
R311.3
Delete R311.3 and substitute the following:
R311.3 Hallways. The minimum width of a hallway shall be not less than
3 feet. Baseboard, casings and other trim shall not reduce the required
width to less than 34-1/2”.
R311.4.3
Delete R311.4.3 and substitute the following:
R311.4.3 Landings at doors. There shall be a floor or landing on each
side of each exterior door.
Exception: Where a stairway of two or fewer risers is located on the
exterior side of a door, other than the required exit door, a landing is not
required for the exterior side of the door.
The floor or landing at the exit door required by Section R311.4.1 shall not
be more than 1.5 inches (38 mm) lower than the top of the threshold. The
floor or landing at exterior doors other than the exit door required by
Section R311.4.1 shall not be required to comply with this requirement but
shall have a rise no greater than that permitted in Section R311.5.3.
Exception: the landing at an exterior doorway shall not be more than 8-1/4
inches (210 mm) below the top of the threshold, provided the door, other
than an exterior storm or screen door does not swing over the landing.
The width of each landing shall not be less than the door served. Every
landing shall have a minimum dimension of 36 inches (914mm) measured
in the direction of travel.
R311.5.3.1
Delete IRC R311.5.3.1 and R311.5.3.2 and substitute the following:
311.5.3.1 Riser height. The maximum riser height shall be 8-1/4 inches
(210 mm). The riser shall be measured vertically between leading
edges of the adjacent treads. The greatest riser height within any
flight of stairs shall not exceed the smallest by more than 3/8 inch
(9.5 mm).
311.5.3.2 Tread depth. The minimum tread depth shall be 9 inches (229
mm). 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. The greatest tread depth
within any flight of stairs shall not exceed the smallest by more
than 3/8 inch (9.5 mm). Winder treads shall have a minimum tread
15
depth of 9 inches (229 mm) measured as above at a point 12
inches (305) mm from the side where the treads are narrower.
Winder treads shall have a minimum tread depth of 6 inches (152
mm) at any point. Within any flight of stairs, the greatest winder
tread depth at the 12 inches (305 mm) walk line shall not exceed
the smallest by more than 3/8 inch (9.5 mm).
Delete IRC R311.5.3.3 and replace with the following:
311.5.3.3 Profile. The radius of curvature at the leading edge of the tread
shall be no greater than 9/16 inch (14.3 mm). A nosing not less
than ¾ inch (19.1 mm) but not more than 1-1/4 inches (32 mm)
shall be provided on stairways with solid risers. The greatest
nosing projection shall not exceed the smallest nosing projection
by more than 3/8 inch (9.5mm) between two stories, including the
nosing at the level of floors and landings. Beveling of nosing shall
not exceed ½ inch (12.7 mm). Risers shall be vertical or sloped
from the underside of the leading edge of the tread above at an
angle not more than 30 degrees from the vertical. Open risers are
permitted.
Exception: A nosing is not required where the tread depth is a minimum of
11 inches (279 mm).
R311 Add the following new section:
R311.5.8.3 Attic and other Pull-Down Types of Stairs: Pull-down types
of stairs shall not be required to meet the provisions of sections
R311.5 and R312.
R312
Add new section as follows:
R312.3 Seat or Bench Elements. Guardrails which incorporate seat or
bench elements shall have a guardrail system complying with R312.2 to a
height of 36” measured from the seat surface. The guardrail system shall
also extend to the floor surface below the bench or seat element.
Exception: 1. Porches, balconies or raised floors 30” or less above the floor
or grade below.
2. Freestanding moveable seat and bench elements
R313
Delete R313 Smoke Alarms and substitute the following:
16
Provisions for Fire Detection Systems are contained within the Rhode
Island Fire Safety Code.
R319.1.2
Delete IRC R319.1.2 and substitute the following:
R319.1.2 Geographical areas. Approved naturally durable or pressure-
treated wood shall be used for those portions of wood members which form
the structural supports of buildings, balconies, porches, or similar
permanent building appurtenances when such members are exposed to the
weather without adequate protection from a roof, eave, overhang or other
covering which would prevent moisture or water accumulation on the
surface or at joints between members. Depending on local experience, such
members may include:
1.
Horizontal members such as girders, joists and decking.
2.
Vertical members such as posts, poles and columns.
3.
Both horizontal and vertical members.
R323.1
Delete R323.1 and substitute the following:
R323.1 General. All buildings and structures erected in areas prone to
flooding as identified in Table R301.2(1) and classified as either flood
hazard areas (including A Zones) or coastal high hazard areas (including V-
Zones) shall be constructed and elevated as required by the provisions
contained in this section and ASCE 24-98.
Exception: All buildings and structures erected in identified
floodways as established in Table R301.2(1) shall be designed and
constructed as stipulated in SBC-1-1612 and ASCE 24-98.
R323.3.6
Delete R323.3.6 and substitute the following:
R323.3.6 Flood Hazard Certificates. The following certifications shall be
submitted to the building official:
1. For construction in flood hazard areas not subject to high-velocity wave
action:
1.1
As part of the lowest floor elevation requirements of Section
R323.2.1, certification of the elevation of the lowest floor, including
basement.
1.2
For fully enclosed areas below the design flood elevation where
provisions to allow for the automatic entry and exit of floodwaters
17
do not meet the minimum requirements in Section 2.6.1.1, ASCE
24-98, certification by a registered design professional that the
design will provide for equalization of hydrostatic flood forces in
accordance with Section 2.6.1.2, ASCE 24-98.
2. For construction in flood hazard areas subject to high-velocity wave
action:
2.1 As part of the lowest floor elevation requirements Section R323.3.2,
a certification of the elevation of the lowest horizontal structural
member.
2.2 A certificate prepared by a registered design professional that the
building is designed in accordance with ASCE 24-98, including that
the pile or column foundation and building or structure to be
attached thereto is designed to be anchored to resist flotation,
collapse and lateral movement due to the effects of wind and flood
loads acting simultaneously on all building components, and other
load requirements of R323.3.3.
2.3 For breakaway walls designed to resist a nominal load of less than
10 pounds per square foot (0.48 kN/m2) or more than 20 pounds per
square foot (0.96 kN/m2), a certificate prepared by a registered
design professional that the breakaway wall is designed in
accordance with ASCE 24-98.
R323.4
Add the following new Section:
R323.4
Variances and appeals.
The Board of Appeals after examining the applicant’s hardships shall
approve or disapprove a variance request and shall hear and decide appeals
from the requirements of these regulations, in accordance with the
procedures of Section 23-27.3-127.0 of the Rhode Island State Building
code and following:
(A)
Board of Appeals
The local (or state) Board of Appeals shall hear and decide appeals when it is alleged there
is an error in any requirement, decision or determination made by the Building Official in
the enforcement or administration of these regulations.
(B)
Conditions of Acceptance:
(1) Variances may be issued for the reconstruction, rehabilitation or restoration of
structures listed on the National Register of the State Inventory of Historic Places,
without regard to the procedures set forth in this Section.
(2) Variances may be issued for new construction and substantial improvements to be
erected on a lot of one half acre or less in size contiguous to and surrounded by lots
with existing structures constructed below the base flood level in conformance with the
procedures of paragraphs B (3) (4) (5) and (6) of this Section.
18
(3) Variances shall only be issued upon a determination that the variance is the minimum
necessary, considering the flood hazard, to afford relief.
(4) Variances shall only be issued upon (1) a showing of good and sufficient cause, (2) a
determination that failure to grant the variance would result in exceptional hardship to
the applicant, and (3) a determination that the granting of a variance will not result in
increased flood heights, additional threats to public safety, extraordinary public
expense, create nuisances, cause fraud on or victimization of the public or conflict with
existing local laws or ordinances.
(5) Any applicant to whom a variance is granted shall be given notice in the written
decision from the Board of Appeals that the structure will be permitted to be built with
a lowest floor elevation X feet below the base flood elevation.
(6) The Board of Appeals shall notify the applicant in the written decision that (i) the
issuance of a variance to construct a structure below the base flood level will result in
increased premium rates for flood insurances up to amounts as high as $25 for $100 of
insurance coverage and (ii) such construction below the base flood level increases risks
to life and property. Such notification shall be maintained with a record of all
variances actions, including justification for their issuance. All such variances issued
shall be reported in the community's Annual Report to the Federal Insurance
Administration.
(7) Variances shall not be issued by a community within any designated regulatory
floodway, if any increase in flood levels during the base discharge would result. (For
communities which must meet the requirements of Section 60.3 (d) of the National
Flood Insurance Program regulations).
(8) Upon receipt of an application for a variance the Chairman of the Board of Appeals
shall forward a copy of the application to the Rhode Island Emergency Management
Office, Statewide Flood-Plain Coordinator.
19
Chapter 4
R401.3
Delete IRC R401.3 and substitute the following:
R401.3 Drainage.
Lots shall be graded so that additional accumulation
of surface water does not occur across adjoining property. Surface drainage
shall be diverted to a storm sewer conveyance or other point of collection so
as not to create a hazard. Lots shall be graded so as to drain surface water
away from foundation walls. The grade away from foundation walls shall
fall a minimum of 6” (inches) (153 mm) within the first 10 feet (3048 mm).
Exception. Where lot lines, walls, slopes or other physical barrier prohibit
6 inches (153 mm) of fall within 10 feet (3048 mm), drains or swales shall
be provided to ensure drainage away from the structure.
Table R401.4.1 Delete IRC Table R401.4.1 and substitute the following:
Table R401.4.1
Presumptive Load-Bearing Values of
Foundation Materials
Type of Soil
Load Bearing
Pressure (psf)
Crystalline Bedrock
12,000-20,000 psf
Sedimentary and Foliated Rock
8,000-12,000 psf
Medium Dense-to-Dense Sandy Gravel and Gravel
4,000 psf
Medium Dense-to-Dense well-graded Sand, Silty
Sand and Silty Gravel
3,000 psf
Firm Fine Sand, Silty Sand and Silty Gravel
1,500 psf
Loose Fine Sand, Silty Sand, organic soils, clay
And areas suspected at being filled
1,000 psf
Table R402.2
Delete Table R402.2 and substitute the following:
20
TABLE NO R-402.2
MINIMUM SPECIFIED COMPRESSIVE
STRENGTH OF CONCRETE
LOCATION
MINIMUM f’c OF
CONCRETE AT 28 DAYS
Basement and foundation
walls, continuous and isolated
footings, basement and garage
slabs.
2500 psi
*Exterior slabs, walks and steps
exposed to weather
3000 psi
*Exterior slabs shall be air-entrained concrete.
Delete IRC Table 403.1 and substitute the following:
TABLE R403.1
MINIMUM WIDTH OF CONCRETE OR MASONRY FOOTINGS
(Inches)a
LOAD BEARING VALUE OF SOIL (psf)
1.500
2,000
3,000
>4,000
Conventional light-frame construction
1-story
12
12
10
10
2-story
15
12
10
10
3-story
23
17
12
12
4-inch brick veneer over light frame or 8-inch hollow concrete masonry
1-story
12
12
12
12
2-story
21
16
12
12
3-story
32
24
16
12
8-inch solid or fully grouted masonry
1-story
16
12
12
12
2-story
29
21
14
12
3-story
42
32
21
16
For SI: 1 inch = 25.4 mm. 1 pound per square foot = 0.0479 kN/m2.
a. Where minimum footing width is 12 inches, a single wythe of solid or fully grouted
12-inch nominal concrete masonry units is permitted to be used.
Delete R403.1.4.1 Frost Protection and substitute the following:
R403.1.4.1 Frost Protection. Except where otherwise protected from frost, foundation
walls, piers and other permanent supports of buildings and structures shall be protected
from frost by one or more of the following methods:
21
1.
Extending below the frost line specified in Table R301.2.(1);
2.
Constructing in accordance with Section R403.3;
3.
Constructing in accordance with ASCE32-01; and
4.
Erected on solid rock.
Exceptions:
1.
Freestanding accessory structures with an area of 200 square feet ( 18.5 m2) or less
and an eave height of 10 feet (3048 mm) or less shall not be required to be
protected.
2.
Decks not supported by a dwelling need not be provided with footings that extend
below the frost line.
Footings shall not bear on frozen soil unless such frozen condition is of a permanent
character.
R403.1.6
Delete R403.1.6 and R403.1.6.1 and substitute the following:
R403.1.6 General Foundation Anchorage. Foundation sill plates at
exterior walls shall be anchored to the foundation as follows:
1 + 2story buildings – ½” @ 48” o/c or
5/8” @ 72” o/c
3 story building - ½” @ 24” o/c or
5/8” @ 36” o/c
Bolts shall be spaced not more than 12” from the corners. Bolts shall
extend a minimum of 15” into masonry or 7” into concrete. Sill plates shall
be protected from decay in accordance with Section R323. Nuts and
washers shall be tightened on each bolt to the plate and shall not be recessed
or countersink into the first plate. Bolts shall be high enough to allow for
full engagement of the nut and nuts shall be left exposed for inspection at
the framing stage of construction.
Exception: Foundation anchor straps, spaced as required to provide
equivalent anchorage to ½” diameter anchor bolts.
R403.1.6.1 Braced Panel Anchorage. Shear walls shall be anchored to
the foundation in accordance with Appendix L or the reference standards in
R301.2.1.1. The shear wall connections shall be in addition to general
foundation anchorage requirements.
22
R403.1.7.
Delete Section R403.1.7 without substitution.
R403.3
Delete R403.3 and substitute the following:
R403.3 Frost protected shallow foundations. For buildings where the
monthly mean temperature of the building is maintained at a minimum of
64o (18 oc), footings are not required to extend below the frost line when
protected from frost by insulation in accordance with Figure R403.3(1) and
Table R403.3. The air freezing index (oF-days) is 2000 for the entire State
of Rhode Island.
Exceptions:
1.
No foundation not so protected may be attached to frost-protected
shallow foundations.
2.
Unheated garages, porches, utility rooms and carports shall not be
permitted to be attached to dwelling units with frost-protected
shallow foundations.
3.
The use of frost-protected shallow foundations shall be limited to 1
story buildings a maximum of 16’ from average grade to topmost
part of main roof.
Materials used below grade for the purpose of insulating footings
against frost shall be labeled as complying with ASTM C578.
Figure R403.3(1)
Amend Figure R403.3(1) as follows:
1.
Change (12” max) to (6” min to 12” max)
Delete R403.3.1, R403.3.1.1, Figure R403.3(3), Figure R403.3(4), and R403.3.1.2.
R403.3.2
Delete and substitute the following:
R403.3.2 Protection of vertical insulation. Vertical insulation shall be
protected from damage for its full height from above grade to below grade
by use of cementitious board, plywood rated for below ground use or other
approved impact-resistant materials attached directly to the surface of the
insulation. A continuous metal flashing termite barrier shall be installed
under the sill plate at the top of the concrete slab and wall and vertical
insulation edge and left exposed at the exterior. All anchor bolt
penetrations shall be sealed.
Table R404.1.1(1)
Editorial no “H” footnote.
23
Chapter 6
R602.10
Delete R602.10 and substitute the following:
R602.10 Wall bracing. Walls shall be braced in accordance with this
section.
Exception: Structures subject to the scope limitations of Appendix M shall
be permitted to be braced in accordance with Appendix M in lieu of the
provisions of this section.
R613.4
Delete R613.4 without substitution.
24
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25
Chapter 7
Table R703.4 Amend Table R703.4 as follows:
Change column note at vinyl siding to read “yes” (sheathing paper is
required). Add footnote “aa”, after footnote “n” of vinyl siding. Add
footnote “aa” as follows:
aa. Vinyl wall siding shall be installed over an approved weather-resistant
sheathing paper or membrane, sound existing weather-resistant siding
or approved leveling insulating board. Under no circumstance is vinyl
siding to be installed directly to studs, or directly to wall sheathing
without sheathing paper or membrane specified in R703.2.
The following editorial changes are made to section R703.7.2.1.
a.
Line 14 – Figure R703.7.1 should be Figure R703.7.2.2.
b.
Line 20 – Figure R703.7.2.1 should be Figure R703.7.2.2.
The following editorial changes are made to section R703.7.2.2.
c.
Line 14 – Figure R703.7.1 should be Figure R703.7.2.1.
d.
Line 20 – Figure R703.7.2.2 should be Figure R703.7.2.1.
R703.11
Add the following:
703.11 Re-siding Exterior Walls. Materials and methods of application
used for residing or replacing an existing wall covering shall comply
with the requirements of Section R-703. New exterior side wall
covering shall not be installed without first removing existing wall
coverings when any of the following conditions occur:
1.
When the existing wall or wall covering is water-soaked or
has deteriorated to the point that the existing wall or wall
covering is not acceptable as a base for additional covering.
2.
When the existing wall has three (3) or more applications of
any wall covering.
Exception: The total number of wall coverings shall not be
limited when any of the existing wall coverings consist of
asbestos cement board or asbestos cement shingles or any
protective encapsulating or protective siding/layer
immediately over the asbestos material.
Asbestos cement board or asbestos cement shingles and any
protective encapsulating layer thereupon shall not be
26
required to be removed unless the existing wall is
unacceptable for use as a base for additional layers of wall
covering.
Any disturbance, repair or removal of existing asbestos
cement board or asbestos cement shingles shall be in
accordance with all State and Federal regulations.
27
Chapter 8
R802.11
Add the following to R802.11:
Exception: Trusses: Trusses shall have ties to top wall plates in
accordance with minimum uplift design loads provided by the truss
manufacturer.
Add the following new subsection:
R802.11.2 Rafters: Rafters shall have ties at the wall plate and ridge
bearing points in accordance with Appendix M.
R807.1
Add the words “or closet” after the word “hallway” on line 3 paragraph 2.
28
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29
Chapter 9
R905.2.6
Delete R905.2.6 and substitute the following:
R905.2.6 Attachment. Asphalt strip shingles shall have a minimum of six
fasteners per shingle.
Exceptions:
1.
Where the roof slope exceeds 20 units vertical in 12 units horizontal
(20:12), special fastening details may be required by the
manufacturer.
2.
Fastening systems tested by the manufacturer to ASTM D3161
modified to use a wind speed of 110 MPH shall be permitted to be
installed in any wind zone.
R905.2.7.2
Delete without substitution
R905.2.8.2.3 Delete and substitute the following:
3.
For closed valleys (valley covered with shingles), valley lining of
one ply of smooth roll roofing complying with ASTM D224 Type II
or Type III and at least 36 inches (914 mm) wide or valley lining as
described in Items 1 and 2 above shall be permitted. Specialty
underlayment complying with ASTM D 1970 may be used in lieu of
the lining material. Other valley lining systems and techniques
acceptable to the shingle manufacturer shall be approved by the
Building Official.
30
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31
Chapter 10
Modify Table R1003.1 and Figure R1003.1as follows. Delete line item N and delete
figure note regarding 1-1/2” min. grout.
Add the following new section R-1007 Room Heater
R-1007.0
Room Heaters (Wood/Coal/Pellet Stoves)
1007.1
General: Solid-fuel-burning room heaters shall be tested
in accordance with UL 1482 listed in Appendix A of this
Code.
1007.2 Multiple fuel-flue installations: A solid-fuel-burning room
heater shall not connect to a chimney passageway venting
another appliance.
1007.3 Used or antique stoves and room heaters: The Building
Official shall permit the installation and use of non-listed or
tested stoves and heaters when installed in accordance with
the provisions of Table 1007.3 as follows:
Table 1007.3
CLEARANCE REDUCTION METHODS
REDUCED CLEARANCE WITH PROTECTION (inches) a
Horizontal combustible
assemblies located above the heat
source
Horizontal combustible
assemblies located beneath the
heat source and all vertical
combustible assemblies
TYPE OF PROTECTIVE ASSEMBLYa
Required clearance to
combustibles without protection
(inches) a
36 18 9 6
Required clearance to
combustibles without protection
(inches) a
36 18 9 6
Galvanized sheet metal, minimum nominal thickness of 0.024 inch (No. 24
Gage), mounted on 1-inch glass fiber or mineral wool batt reinforced with
wire on the back, 1 inch off the combustible assembly.
18
9
5
3
12
6
3
3
Galvanized sheet metal, minimum nominal thickness of 0.024 inch (No. 24
Gage), spaced 1 inch off the combustible assembly.
18
9
5
3
12
6
3
2
Two layers of galvanized sheet metal, minimum nominal thickness of 0.024
inch (No. 24 Gage), having a 1-inch airspace between layers, spaced 1 inch
off the combustible assembly
18
9
5
3
12
6
3
3
Two layers of galvanized sheet metal, minimum nominal thickness of 0.024
inch (No. 24 Gage), having 1 inch of fiberglass insulation between layers,
spaced 1 inch off the combustible assembly.
18
9
5
3
12
6
3
3
0.5-inch inorganic insulating board, over 1 inch of fiberglass or mineral
wool batt, against the combustible assembly
24
12
6
4
18
9
5
3
3.5-inch brick wall, spaced 1 inch off the combustible wall
---
---
---
---
12
6
6
6
3.5 inch brick wall, against the combustible wall
---
---
---
---
24
12
6
5
For SI: 1 inch = 25.4 mm, oC = [(oF)-32]/1.8, 1 pound per cubic foot = 16.02 kg/m3 , 1.0 Btu x in/ft2 .h. oF=0.144 W/m 2 . oK.
a. Mineral wool and glass fiber batts (blanket or board) shall have a minimum density of 8 pounds per cubic foot and a minimum melting point of
1,500o F. Insulation material utilized as part of a clearance reduction system shall have a thermal conductivity of 1.0 Btu x in/(ft2 .h. oF) or less.
Insulation board shall be formed of noncombustible material.
32
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33
Chapter 11
N1101.2.1
Delete N1101.2.1.1 and substitute the following:
N1101.2.1
Residential Buildings Type A-1. Compliance shall be
demonstrated by either:
1.
Meeting the requirements of the Rhode Island Energy Conservation
Code SBC-8-2004 ; or
2.
Meeting the following prescriptive requirements based on location
within the state and amount of exterior window area.
For the Communities in Providence County only:
Window area percentage
Max
Min
Min
Min
Min
Of exterior wall area Glazing U-Factor Ceiling R-Value Exterior R-Value Floor R-Value or Basement wall
R-Value
0-10%
0.40
R-38
R-11
R-19 or
R-10
10.01-17.50%
0.40
R-38
R-13
R-19 or
R-10
17.51-25%
0.40
R-49
R-19
R-30 or
R-10
For Communities in All other Counties:
Window area percentage
Max
Min
Min
Min
Min
Of exterior wall area Glazing U-Factor Ceiling R-Value Exterior R-Value Floor R-Value or Basement Wall
R-Value
0-10%
0.40
R-30
R-11
R-19 or
R-10
10.01-17.5% 0.40
R-38
R-13
R-19 or
R-10
17.5-25%
0.40
R-49
R-13
R-19 or
R-10
Notes:
1.
If window area exceeds 25% of gross exterior wall area, the
provisions of SBC- 8-2004 State Energy Conservation Code
Chapters 5 and 6 prevail.
2.
R-Value 10.0 insulation shall be installed for slab on grade
structures from grade to 4’ below grade in Providence County and
2’ below grade elsewhere and shall be protected against physical
damage in accordance with Section R403.3.2. The maximum
amount of uninsulated foundation above grade shall be 16”.
3.
Sliding glass doors and fully glazed patio doors shall be considered
windows for the purpose of this table.
4.
Roof/ceiling assemblies in which the finished interior surface is the
underside of the roof sheathing, or where the finished ceiling surface
is attached to the underside of the roof framing member (i.e.
cathedral ceilings), shall have a minimum R-value of 19 insulation
34
provided the exterior walls of the structure have an insulation value
of R-19 or better, and the glass U-factor is a maximum of 0.35.
5.
Mass walls shall meet the R-value requirements of Section N
1102.1.1.1
6.
Skylights and roof windows shall have a maximum U factor of 0.50.
7.
Foundation walls enclosing basements with conditioned space shall
have a maximum of 16” exposed above grade without insulation.
N1103.3
Delete N1103.3 and substitute the following:
N1103.3 Duct Insulation:
All portions of the air distribution system shall be installed in accordance
with section M1601 and be insulated as stated below:
Unconditioned Attic space
R-5
Unconditioned Cellar or Basement Space:
Return Duct
None required
Supply Duct
R-3.3
Located Outside of the Building
R-8
Underground Supply or Return Ducts
R-8
When located within exterior walls R-8 shall be applied between supply or
return ducts and the exterior sheathing.
Exceptions: Duct insulation, except as required to prevent
condensation, is not required in the following cases.
1.
Exhaust air ducts.
2.
When supply or return air ducts are installed in basements or
cellars having insulated walls in accordance with N1101.2.1
(2).
3.
Air distribution systems within appliances or equipment.
35
Chapter 14
M 1401.3
Delete M1401.3 and substitute the following:
M 1401.3 Sizing. Heating and cooling equipment shall be sized based on
building loads calculated in accordance with ACCA Manual J or other
approved heating and cooling methodologies. To recognize equipment
sizing availability and to provide for future additions, equipment shall be
sized so as not to exceed 150% of the submitted building load calculations.
M 1411.4
Delete M1411.4 and substitute the following:
M 1411.4 Insulation of refrigerant piping. Piping and fittings for refrigerant
vapor (suction) lines shall be insulated with insulation having a thermal
resistivity of at least R=3.0 hr. – ft2. oF/BTU and having external surface
permeance not exceeding 0.05 perms [2.87 mg./ ( s.m2Pa)] when tested in
accordance with ASTME 96.
36
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37
Chapter 16
M1601.3.1
Add the following exceptions to M1601.3.1
Exception: Flexible air ducts shall be permitted to be joined with or without
tapes using approved mechanically fastened tension straps or flexties
installed with a tensioning gun or other similar technologies.
M 1602.2
Add the following exception to M1602.2.4
Exception: return air shall be permitted to be taken from locations such as
a kitchen or garage which is provided its own separate and individual
system providing 100% of the supply air for that space.
38
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39
Chapter 18
To M1801.3.1 Size add the following exception:
Exception:
Installation of replacement appliances below an 85% AFUE rating
shall be exempt from the requirement of installing a new chimney liner and must
meet the manufacturer’s recommendations for installation in an unlined chimney.
40
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41
Chapter 22
Add the following exception to M2201.1 Materials.
Exception: Non-metallic storage tanks shall meet the requirements of UL
subject 2258 and shall be installed in accordance with
manufacturer’s instructions.
M2203.8
Add the following code section:
M2203.8 Emergency Disconnect Switch. When an oil fired heating
appliance is located inside a structure, a remote means of shutting off power
to the oil pump and firing circuit in addition to the serviceman’s switch
shall be provided as follows:
1.
When the appliance is located in an unfinished basement or cellar,
an additional shutdown switch shall be installed at the entrance to
the basement at the top of the stairs, located on either side of any
door.
2.
When the appliance is located in a separately dedicated utility room,
the switch shall be located outside the room immediately adjacent to
its entrance.
3.
When the appliance is located in a crawl space or attic, the switch
shall be located immediately outside the entrance to the crawl space
or attic area.
The switch shall be located on a wall mounted between 60” and 80” above the floor
surface and be identified with a red cover plate suitably identified as to its purpose.
42
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43
Chapter 24
G2425.15
Add the following exception to G2425.15.1:
Exception:
Installation of replacement appliances below an 85% AFUE rating
shall be exempt from the requirement of installing a new chimney liner and must
meet the manufacturer’s recommendations for installation in an unlined chimney.
44
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45
Chapter 25
P-2501.1
Delete 2501.1 and substitute the following.
P2501.1 Scope. The provisions of this chapter shall govern the installation of plumbing
not specifically covered in other chapters applicable to plumbing systems
P2503.4
Delete P2503.4 Building Sewer Testing without substitution.
P2503.5.2
Delete P2503.5.2 Finished Plumbing and substitute the following:
P2503.5.2 Finished Plumbing. After the plumbing fixtures have been set
and then traps filled with water, their connections shall be tested and proved
water tight by filling and then draining each fixture and their traps and
fixture connections proven tight by visual inspection.
46
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47
Chapter 26
P2603.5
Add the following exception to P2603.5 Pipes through footings or
foundation walls:
Exception: PVC schedule 40 minimum pipe shall not be required to be
sleeved or be provided with a relieving arch.
P2603.6
Add the following exception to P2603.6 Freezing:
Exception: Soil and vent stacks located within exterior walls and vent pipes
in attics shall not be required to be insulated.
P2603.6.1
Delete P2603.6.1 and substitute the following
P2603.6.1
Sewer Depth.
Building sewers that connect to private sewage disposal systems shall meet
the requirements of the Department of Environmental Management’s
Regulations for Individual Sewage Disposal Systems. Building sewers
connecting to a public sewer shall be a minimum of 36 inches below grade.
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Chapter 29
P2903.3
Delete P2903.3 Minimum Pressure and substitute the following:
P2903.3 Minimum Pressure. Minimum static pressure shall be 40 psi
measured before any meter, or a booster pump shall be installed after the
meter providing 40 psi minimum static pressure. For private wells, 40 psi
minimum shall be provided at the outlet of any storage tank or pump.
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Appendices
Appendix E
AE 303 and 304
Delete Sections 303 and 304 and substitute the following:
AE 303
Permit issuance – See SBC-1 and Section R105.
AE 304 Fees. See SBC-1 and R108.
Appendix G
Add the following new Section AG 103.3 Water Treatment
AG103.3
Water Treatment: Circulation systems shall be of adequate
size to turn over the entire pool content at least once every 12 hours for
private swimming pools. Circulation system equipment shall be designed to
provide the proper turnover rate based upon the manufacturer’s
recommended maximum flow rate of the filter, in clean media condition.
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Add the following new Appendix M
Appendix M
M101.1
General. This appendix contains prescriptive solutions for
compliance on wind path load transfer requirements, and
shall be used only within the limitations of section L101.2.
M101.2
Conditions of use. The prescriptive solutions specified in
the following sections shall not be permitted to be used in the
following conditions:
1.
Buildings and structures of any size in 110 MPH or 120
MPH wind zones located in a V zone as determined by
community FIRMS.
2.
Two or more story buildings and structures of any size
located in 120 MPH wind zone with more than 20% exterior
fenestration.
3.
Two or more story structures with a building height greater
than 33’ as measured from Grade Plane to the average height
of the highest roof surface.
4.
Any two or more story structure or building with opening
fenestration greater than 40% on any one wall.
M202 Roofs
M202.1
Scope. The following applies to structures conventionally
framed or to truss-type roofs.
M202.2
Roof Sheathing. Roof sheathing shall be not less than 7/16”
finished thickness.
M202.3
Roof nailing. Roof attachment shall be accomplished with
minimum 8d nails as follows:
1.
In the 4 foot perimeter edge zone along the edges: 6”
o/c
2.
To the intermediate supports within the 4 foot
perimeter edge zone: 6” o/c
3.
Along the gable end wall or rake: 4” o/c
4.
All other areas: 6” o/c edge; 12” o/c intermediate.
All sheathing edges within the 4-foot perimeter edge zone
shall be blocked with 2x3 minimum including the ridge line
and soffit/fascia area. Provisions for ventilation air shall be
maintained.
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Exception: 2 x 3 intermediate blocking can be eliminated
provided all sheathing is ¾” nominal tongue and groove
structural panels.
M202.4
Ridge Straps. Ridge straps 1-1/4” x 20 gage shall be
attached to each pair of opposing rafters with 5-8d nails at
each end into the framing member.
Exceptions:
1.
Ridge straps are not required when collar ties of nominal 1 x 6 or 2 x
4 lumber are located within the upper third of the attic space and
attached to each rafter with 3-10 d nails
2.
Trusses without a framed ridge connection.
3.
Plywood gussets of equivalent cross section.
4.
Other engineered connections.
5.
At hips, straps shall be installed so each hip jack is connected across
the hip line with at least 1-8d into an opposite framing member.
M202.5 Rake and eave overhangs. Overhangs shall be limited to
24”. Ladder style rake overhangs attached to the gable end walls
shall be limited to 12”. Cantilevered rake overhangs at gable end
walls shall be limited to 24”.
M202.6 Roof assembly to wall assembly. See Section R802.11.
Exception: Roof truss to wall connection shall be designed to withstand
either the load requirements of Table R802.11 or the connection loads
indicated on the truss design shop drawings, whichever is greater.
M203
Walls
M203.1
Wall sheathing. Wall sheathing shall be a minimum 7/16”
structural panel. Nailing shall be in accordance with Table R602.3(1) and
the following:
1.
At the top plate or plates, the sheathing shall extend from the top of
the top plate to a minimum of 16” beyond the stud-to-bottom of the
top plate connection. A minimum of 4 nails shall be used at each
stud fastening, and edge-nailed to each plate at 6” o/c.
Alternate: prefabricated and pre-engineered connection
straps approved by the Building Official.
2.
If the studs are not continuous to the foundation plate such as at an
intermediate floor, the wall sheathing shall be continuous and
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uninterrupted for a distance of 16” beyond from top of bottom wall
plate to 16” beyond bottom of bottom wall top plate below, with a
minimum of 4 nails at each stud, and field-nailed at 6” o/c to floor
joist header framing.
Alternate: Prefabricated and pre-engineered connection
anchors or fasteners approved by the Building Official.
3.
At the bottom of the wall assembly to the foundation sill plate, the
wall sheathing shall be continuous from a point 16” above the top of
the bottom wall plate to the bottom of the foundation sill, with a
minimum of 4 nails at each stud, 6” field nailed and edge nailed to
the foundation sill plate at 6” o/c.
Alternate: Prefabricated pre-engineered connection anchors
or fasteners approved by the Building Official.
M203.2 Shear Walls. A 4’ segment of wall sheathing shall be designated
as a shear wall at each corner of the structure at each floor, and no
more than 24’ apart along a wall length. The following additional
requirements apply:
1.
No openings are permitted within this 4’ section.
Exception: Window openings are allowed no closer than 2’
to corner providing the length of that shear panel is increased
to 8’.
2.
All edges shall be blocked and nailed at 6” o/c, and field-
nailed at 6” o/c.
3.
Studs shall be doubled at each end of the shear wall panel.
M-203.2.1 Shear wall holddowns. 1st story shear walls shall be connected
to the foundation below with connection anchoring capable of 3500
lb. hold-down capacity, in addition to conventional foundation
anchor bolt requirements in the remainder of the panel. The hold
downs shall be fastened to each end of the shear wall at the double
stud.
Exception #1: Shear wall holddowns shall not be required in wind
zones I or II (100 mph or 110 mph).
Exception #2: Shear wall anchors shall not be required provided ½”
anchor bolts at 48” o/c max are installed with the top of the bolts
anchored through the floor system to the bottom plate of the exterior
wall frame for the entire foundation perimeter.
M203.3 Foundation anchor bolts. Anchor bolts shall be installed in
accordance with section R403.1.6 and the following:
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1 + 2 story buildings – ½” @ 48” o/c or
5/8” @ 72” o/c
3 story building - ½” @ 24” o/c or
5/8” @ 36” o/c
Alternate: Prefabricated and pre-engineered connections in design
and quantity sufficient to equal strength of anchor bolt specification
above.
Exception: See Exception #2 to M203.2.1 above.
M203.4 Wall Framing.
M203.4.1. For wind zone 2 (110 mph) and zone 3 (120 mph) the
following conditions apply:
1.
Exterior bearing and non-bearing walls greater than 10’ in
height shall be 2 x 6 @ 16” o/c min.
2.
Walls with a total height greater than 10’ shall be permitted
to use 2 x 4 @ 16” o/c providing the wall is limited to 10’ in
length and the individual studs are not greater than 9’ in
length.
M203.4.2 Garage doors. In wind zone 3 (120) mph garage doors
shall be limited to 9’ x 8’ nominal.
M204 Deviations.
M204.1 Deviations. Deviations from the above prescriptive requirements
shall only be permitted if stamped calculations and drawings are
provided by a Rhode Island registered professional engineer for
alternative connections.