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7 LONG TITLE
8 General Description:
9 This bill modifies a provision of the adopted International Residential Code.
10 Highlighted Provisions:
11 This bill:
12 . provides an exception to an emergency escape and rescue opening provision of the
13 adopted International Residential Code.
14 Money Appropriated in this Bill:
16 Other Special Clauses:
18 Utah Code Sections Affected:
20 15A-3-202, as enacted by Laws of Utah 2011, Chapter 14
22 Be it enacted by the Legislature of the state of Utah:
23 Section 1. Section 15A-3-202 is amended to read:
24 15A-3-202. Amendments to Chapters 1 through 5 of IRC.
25 (1) In IRC, Section 109:
26 (a) A new IRC, Section 109.1.5, is added as follows: "R109.1.5 Weather-resistant
27 exterior wall envelope inspections. An inspection shall be made of the weather-resistant
28 exterior wall envelope as required by Section R703.1 and flashings as required by Section
29 R703.8 to prevent water from entering the weather-resistive barrier."
30 (b) The remaining sections are renumbered as follows: R109.1.6 Other inspections;
31 R188.8.131.52 Fire- and smoke-resistance-rated construction inspection; R184.108.40.206 Reinforced
32 masonry, insulating concrete form (ICF) and conventionally formed concrete wall inspection;
33 and R109.1.7 Final inspection.
34 (2) IRC, Section R114.1, is deleted and replaced with the following: "R114.1 Notice to
35 owner. Upon notice from the building official that work on any building or structure is being
36 prosecuted contrary to the provisions of this code or other pertinent laws or ordinances or in an
37 unsafe and dangerous manner, such work shall be immediately stopped. The stop work order
38 shall be in writing and shall be given to the owner of the property involved, or to the owner's
39 agent or to the person doing the work; and shall state the conditions under which work will be
40 permitted to resume."
41 (3) In IRC, Section R202, the following definition is added: "CERTIFIED
42 BACKFLOW PREVENTER ASSEMBLY TESTER: A person who has shown competence to
43 test Backflow prevention assemblies to the satisfaction of the authority having jurisdiction
44 under Utah Code, Subsection 19-4-104 (4)."
45 (4) In IRC, Section R202, the definition of "Cross Connection" is deleted and replaced
46 with the following: "CROSS CONNECTION. Any physical connection or potential
47 connection or arrangement between two otherwise separate piping systems, one of which
48 contains potable water and the other either water of unknown or questionable safety or steam,
49 gas, or chemical, whereby there exists the possibility for flow from one system to the other,
50 with the direction of flow depending on the pressure differential between the two systems (see
51 "Backflow, Water Distribution")."
52 (5) In IRC, Section R202, the definition of "Potable Water" is deleted and replaced
53 with the following: "POTABLE WATER. Water free from impurities present in amounts
54 sufficient to cause disease or harmful physiological effects and conforming to the Utah Code,
55 Title 19, Chapters 4, Safe Drinking Water Act, and 5, Water Quality Act, and the regulations of
56 the public health authority having jurisdiction."
57 (6) IRC, Figure R301.2(5), is deleted and replaced with Table R301.2(5a) and Table
58 R301.2(5b) as follows:
|96||Box Elder County|
|97||Brigham City||4,300 ft.||30||43|
|110||Fruit Heights||4,500 ft.||40||57|
|115||Castle Dale||5,660 ft.||30||43|
|116||Green River||4,070 ft.||25||36|
|122||Cedar City||5,831 ft.||30||43|
|136||Salt Lake County|
|138||Salt Lake City||4,300 ft.||30||43|
|140||West Jordan||4,375 ft.||30||43|
|141||West Valley||4,250 ft.||30||43|
|142||San Juan County|
|147||Mt. Pleasant||5,900 ft.||30||43|
|157||Park City||6,800 ft.||100||142|
|158||Park City||8,400 ft.||162||231|
|159||Summit Park||7,200 ft.||90||128|
|165||American Fork||4,500 ft.||30||43|
|167||Pleasant Grove||5,000 ft.||30||43|
|169||Spanish Fork||4,720 ft.||30||43|
|177||Santa Clara||2,850 ft.||15 (1)||21|
|178||St. George||2,750 ft.||15 (1)||21|
|183||North Ogden||4,500 ft.||40||57|
|186||(1) The IRC requires a minimum live load - See R301.6.|
(2) This table is informational only in that actual site elevations may vary. Table is only
valid if site elevation is within 100 feet of the listed elevation."
189 Snow Loads. The ground snow load, Pg, to be used in the determination of design snow loads
190 for buildings and other structures shall be determined by using the following formula: Pg = (Po2
191 + S2(A-Ao)2)0.5 for A greater than Ao, and Pg = Po for A less than or equal to Ao.
193 Pg = Ground snow load at a given elevation (psf);
194 Po = Base ground snow load (psf) from Table No. R301.2(5a);
195 S = Change in ground snow load with elevation (psf/100 ft.) From Table No. R301.2(5a);
196 A = Elevation above sea level at the site (ft./1,000);
197 Ao = Base ground snow elevation from Table R301.2(5a) (ft./1,000).
198 The building official may round the roof snow load to the nearest 5 psf. The ground snow
199 load, Pg, may be adjusted by the building official when a licensed engineer or architect submits
200 data substantiating the adjustments. A record of such action together with the substantiating
201 data shall be provided to the division for a permanent record.
202 The building official may also directly adopt roof snow loads in accordance with Table
203 R301.2(5b), provided the site is no more than 100 ft. higher than the listed elevation.
204 Where the minimum roof live load in accordance with Table R301.6 is greater than the design
205 roof snow load, such roof live load shall be used for design, however, it shall not be reduced to
206 a load lower than the design roof snow load. Drifting need not be considered for roof snow
207 loads less than 20 psf."
208 (8) In IRC, Section R302.2, the words "Exception: A" are deleted and replaced with the
209 following: "Exceptions: 1. A common 2-hour fire-resistance-rated wall is permitted for
210 townhouses if such walls do not contain plumbing or mechanical equipment, ducts or vents in
211 the cavity of the common wall. Electrical installation shall be installed in accordance with
212 Chapters 34 through 43. Penetrations of electrical outlet boxes shall be in accordance with
213 Section R302.4.
214 2. In buildings equipped with an automatic residential fire sprinkler system, a".
215 (9) In IRC, Section R302.2.4, a new exception 6 is added as follows: "6. Townhouses
216 separated by a common 2-hour fire-resistance-rated wall as provided in Section R302.2."
217 (10) In IRC, Section R310.1.1, the existing exception is numbered as exception 1, and
218 a new exception 2 is added as follows: "2. An existing bedroom window if meeting the
219 minimum opening requirement would compromise the structural integrity of the building or
220 cannot be accomplished in accordance with current setback, window well, or other building
221 code requirements."
223 the following: "R311.7.4 Stair treads and risers. R3220.127.116.11 Riser height. The maximum riser
224 height shall be 8 inches (203 mm). The riser shall be measured vertically between leading
225 edges of the adjacent treads. The greatest riser height within any flight of stairs shall not
226 exceed the smallest by more than 3/8 inch (9.5 mm).
227 R318.104.22.168 Tread depth. The minimum tread depth shall be 9 inches (228 mm). The tread
228 depth shall be measured horizontally between the vertical planes of the foremost projection of
229 adjacent treads and at a right angle to the tread's leading edge. The greatest tread depth within
230 any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Winder
231 treads shall have a minimum tread depth of 10 inches (254 mm) measured as above at a point
232 12 inches (305 mm) from the side where the treads are narrower. Winder treads shall have a
233 minimum tread depth of 6 inches (152 mm) at any point. Within any flight of stairs, the
234 greatest winder tread depth at the 12-inch (305 mm) walk line shall not exceed the smallest by
235 more than 3/8 inch (9.5 mm).
236 R322.214.171.124 Profile. The radius of curvature at the leading edge of the tread shall be no greater
237 than 9/16 inch (14.3 mm). A nosing not less than 3/4 inch (19 mm) but not more than 1 1/4
238 inches (32 mm) shall be provided on stairways with solid risers. The greatest nosing projection
239 shall not exceed the smallest nosing projection by more than 3/8 inch (9.5 mm) between two
240 stories, including the nosing at the level of floors and landings. Beveling of nosing shall not
241 exceed 1/2 inch (12.7 mm). Risers shall be vertical or sloped from the underside of the leading
242 edge of the tread above at an angle not more than 30 degrees (0.51 rad) from the vertical. Open
243 risers are permitted, provided that the opening between treads does not permit the passage of a
244 4-inch diameter (102 mm) sphere.
246 1. A nosing is not required where the tread depth is a minimum of 10 inches (254 mm).
247 2. The opening between adjacent treads is not limited on stairs with a total rise of 30 inches
248 (762 mm) or less."
252 Carbon monoxide alarms. For new construction, a listed carbon monoxide alarm shall be
253 installed on each habitable level of dwelling units within which fuel-fired appliances are
254 installed and in dwelling units that have attached garages."
256 Alarm requirements. Listed single- and multiple-station carbon monoxide alarms shall comply
257 with UL 2034 and shall be installed in accordance with the provision of this code and NFPA
260 When anchor bolt spacing does not exceed 32 inches (813 mm) apart, anchor bolts may be
261 placed with a minimum of two bolts per plate section located not less than 4 inches (102 mm)
262 from each end of each plate section at interior bearing walls, interior braced wall lines, and at
263 all exterior walls."
265 and Item 3 as follows: "Exception: When anchor bolt spacing does not exceed 32 inches (816
266 mm) apart, anchor bolts may be placed with a minimum of two bolts per plate section located
267 not less than 4 inches (102 mm) from each end of each plate section at interior bearing walls,
268 interior braced wall lines, and at all exterior walls."
270 As an alternative to complying with Sections R404.1 through R404.1.5.3, concrete and
271 masonry foundation walls may be designed in accordance with IBC Sections 1807.1.5 and
272 1807.1.6 as amended in Section 1807.1.6.4 and Table 1807.1.6.4 under these rules."
Legislative Review Note
as of 2-3-12 11:25 AM