Rhode Island Code of Regulations › Title 510 - Building Code Commission › Chapter 00 - N/A › Subchapter 00 - N/A › Part 2 - RISBC-2 Rhode Island State One amp; Two-Family Dwelling Code › Section 510-RICR-00-00-2.5 - Chapter 2

Current through June 14, 2024
Click
					 here to view image
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 are 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
Topographic Effects
Seismic Design Criteria
30psf 
								 1, 2
See figure R301.2(4)
No
None4
Weathering
Frost line depth2,
									 3
Termite
Decay
Severe
40"
Moderate to Heavy
Slight to Moderate
Winter design Temp
Ice Shield Underlayment Required
Flood Hazards
Air Freezing Index
Mean Temperature Annual
0 degrees F in Prov. County 5 degrees All
								 Other
Yes
Yes (See Community FIRMS)
1,200-degree Days B.F.
50 degrees F
NOTES:
1. Roof
				 live load and roof snow load are not additive
2. New Shoreham frost depth is thirty inches
				 (30") and Ground Snow Load is twenty-five (25) psf.
3. Requirements for frost depth footings for
				 accessory attached and detached structures are as follows:
a. Structures and detached accessory
				 buildings of zero (0) to one hundred ninety-nine (199) square feet do not
				 require any frost depth foundations or footings. Two (2) 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 three feet and four inches (3'4") below grade.
Exterior stairs and steps off decks, balconies and
					 platforms greater than thirty inches (30") above grade shall have stringer
					 supports extending to twelve inches (12") below grade and shall be supported
					 and secured to prevent lateral displacement or vertical collapse due to grade
					 changes.
4.
				 Seismic design criteria are not required for buildings and structures regulated
				 by this code.
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) A amp; B. 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 square
					 feet in area.
R301.2.1.1 Delete and
				 substitute the following:
R301.2.1.1 Design criteria.
Construction in regions where the ultimate wind speeds from
					 Figure 301.2(4)(A) equal or exceed one hundred ten (110) miles per hour (177.1
					 km/h) shall be designed in accordance with one (1) of the following:
1. American Forest and Paper Association
				 (AFamp;PA) Wood Frame Construction Manual for One (1) and Two (2) Family
				 Dwellings (WFCM); or
2. Southern
				 Building Code Congress International Standard for Hurricane Resistant
				 Residential Construction (SSTD 10); or
3. International Code Council (ICC) Standard
				 for Residential Construction in High Wind Regions (ICC-600); or
4. Hurricane Resistant Residential
				 Construction (SSTD 10); or Minimum Design Loads for Buildings and Other
				 Structures (ASCE-7);
5. Cold-formed
				 steel construction shall be designed in accordance with the provisions of this
				 code.
6. Concrete construction
				 shall be designed in accordance with the provisions of this code.
7. Structural insulated panel (SIP) walls
				 shall be designed in accordance with the provisions of this code.
8. For all communities located in the one
				 hundred ten (110) MPH and one hundred twenty (120) MPH wind zones, the
				 prescriptive criteria in Appendix AA may be used for buildings and structures
				 in lieu of 1-3 above:
Exceptions to item 8:
1. Buildings and structures of any size in
				 one hundred ten (110) MPH or one hundred twenty (120) MPH wind zones located in
				 a V zone as determined by community FIRMS.
2. Two (2) or more story buildings and
				 structures of any size located in one hundred twenty (120) MPH wind zone with
				 more than twenty percent (20%) exterior fenestration.
3. Two (2) or more story structures with a
				 building height greater than thirty-three feet (33') as measured from Grade
				 Plane to the average height of the highest roof surface.
4. Any two (2) or more-story structure or
				 building with opening fenestration greater than forty percent (40%) on any one
				 (1) wall.
R301.2.1.2
				 Delete section R301.2.1.2 and substitute the following:
R301.2.1.2 Protection of openings.
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 seven
					 sixteenths of one inch (7/16") (11.1 mm) and a maximum span of eight feet (8')
					 (2438 mm) shall be permitted for opening protection in one (1) and two (2)
					 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. And shutter systems approved by Building Code Standards
					 Committee.
Delete without substitution sections R301.2.1.5 thru
					 R301.2.2.4.
Delete and substitute the following: