Representative Mike Schultz proposes the following substitute bill:




Chief Sponsor: Mike Schultz

Senate Sponsor: Curtis S. Bramble


8     General Description:
9          This bill amends provisions related to the state construction code.
10     Highlighted Provisions:
11          This bill:
12          ▸     amends a provision related to residential installation of electrical outlets;
13          ▸     amends a provision related to drainage systems;
14          ▸     amends a provision related to the installation of passive radon controls; and
15          ▸     amends a provision related to natural gas-fired water heater emissions.
16     Money Appropriated in this Bill:
17          None
18     Other Special Clauses:
19          None
20     Utah Code Sections Affected:
21     AMENDS:
22          15A-3-202, as last amended by Laws of Utah 2016, Chapter 249
23          15A-3-206, as last amended by Laws of Utah 2016, Chapter 249
24          15A-6-102, as enacted by Laws of Utah 2016, Chapter 249

26     Be it enacted by the Legislature of the state of Utah:
27          Section 1. Section 15A-3-202 is amended to read:
28          15A-3-202. Amendments to Chapters 1 through 5 of IRC.
29          (1) In IRC, Section R102, a new Section R102.7.2 is added as follows: "R102.7.2
30     Physical change for bedroom window egress. A structure whose egress window in an existing
31     bedroom is smaller than required by this code, and that complied with the construction code in
32     effect at the time that the bedroom was finished, is not required to undergo a physical change to
33     conform to this code if the change would compromise the structural integrity of the structure or
34     could not be completed in accordance with other applicable requirements of this code,
35     including setback and window well requirements."
36          (2) In IRC, Section 109:
37          (a) A new IRC, Section 109.1.5, is added as follows: "R109.1.5 Weather-resistant
38     exterior wall envelope inspections. An inspection shall be made of the weather-resistant
39     exterior wall envelope as required by Section R703.1 and flashings as required by Section
40     R703.8 to prevent water from entering the weather-resistive barrier."
41          (b) The remaining sections are renumbered as follows: R109.1.6 Other inspections;
42     R109.1.6.1 Fire- and smoke-resistance-rated construction inspection; R109.1.6.2 Reinforced
43     masonry, insulating concrete form (ICF) and conventionally formed concrete wall inspection;
44     and R109.1.7 Final inspection.
45          (3) IRC, Section R114.1, is deleted and replaced with the following: "R114.1 Notice to
46     owner. Upon notice from the building official that work on any building or structure is being
47     prosecuted contrary to the provisions of this code or other pertinent laws or ordinances or in an
48     unsafe and dangerous manner, such work shall be immediately stopped. The stop work order
49     shall be in writing and shall be given to the owner of the property involved, or to the owner's
50     agent or to the person doing the work; and shall state the conditions under which work will be
51     permitted to resume."
52          (4) In IRC, Section R202, the following definition is added: "CERTIFIED
53     BACKFLOW PREVENTER ASSEMBLY TESTER: A person who has shown competence to
54     test Backflow prevention assemblies to the satisfaction of the authority having jurisdiction
55     under Utah Code, Subsection 19-4-104(4)."
56          (5) In IRC, Section R202, the definition for "CONDITIONED SPACE" is modified by

57     deleting the words at the end of the sentence "being heated or cooled by any equipment or
58     appliance" and replacing them with the following: "enclosed within the building thermal
59     envelope that is directly heated or cooled, or indirectly heated or cooled by any of the following
60     means:
61     1. Openings directly into an adjacent conditioned space.
62     2. An un-insulated floor, ceiling or wall adjacent to a conditioned space.
63     3. Un-insulated duct, piping or other heat or cooling source within the space."
64          (6) In IRC, Section R202, the definition of "Cross Connection" is deleted and replaced
65     with the following: "CROSS CONNECTION. Any physical connection or potential
66     connection or arrangement between two otherwise separate piping systems, one of which
67     contains potable water and the other either water of unknown or questionable safety or steam,
68     gas, or chemical, whereby there exists the possibility for flow from one system to the other,
69     with the direction of flow depending on the pressure differential between the two systems (see
70     "Backflow, Water Distribution")."
71          (7) In IRC, Section 202, in the definition for gray water a comma is inserted after the
72     word "washers"; the word "and" is deleted; and the following is added to the end: "and clear
73     water wastes which have a pH of 6.0 to 9.0; are non-flammable; non-combustible; without
74     objectionable odors; non-highly pigmented; and will not interfere with the operation of the
75     sewer treatment facility."
76          (8) In IRC, Section R202, the definition of "Potable Water" is deleted and replaced
77     with the following: "POTABLE WATER. Water free from impurities present in amounts
78     sufficient to cause disease or harmful physiological effects and conforming to the Utah Code,
79     Title 19, Chapter 4, Safe Drinking Water Act, and Title 19, Chapter 5, Water Quality Act, and
80     the regulations of the public health authority having jurisdiction."
81          (9) IRC, Figure R301.2(5), is deleted and replaced with Table R301.2(5a) and Table
82     R301.2(5b) as follows:
"TABLE NO. R301.2(5a)
85      COUNTYPoSAo
86      Beaver43636.2
87      Box Elder43635.2
88      Cache50634.5
89      Carbon43635.2
90      Daggett43636.5
91      Davis43634.5
92      Duchesne43636.5
93      Emery43636.0
94      Garfield43636.0
95      Grand36636.5
96      Iron43635.8
97      Juab43635.2
98      Kane36635.7
99      Millard43635.3
100      Morgan57634.5
101      Piute43636.2
102      Rich57634.1
103      Salt Lake43634.5
104      San Juan43636.5
105      Sanpete43635.2
106      Sevier43636.0
107      Summit86635.0
108      Tooele43634.5
109      Uintah43637.0
110      Utah43634.5
111      Wasatch86635.0
112      Washington29636.0
113      Wayne36636.5
114      Weber43634.5
TABLE NO. R301.2(5b)
117      The following jurisdictions require design snow load values that differ from the Equation in
the Utah Snow Load Study.
118      CountyCityElevationGround Snow
Load (psf)
Roof Snow
Load (psf) 6
119      CarbonPrice3
All other county locations5
120      DavisFruit Heights34500 - 48505740
121      EmeryGreen River340703625
122      GarfieldPanguitch366004330
123      RichWoodruff3
Garden City5
124      San JuanMonticello368205035
125      SummitCoalville3
126      TooeleTooele351004330
127      UtahOrem3
Pleasant Grove4
128      WasatchHeber5------
129      WashingtonLeeds3
Santa Clara3
St. George3
All other county locations5



130      WayneLoa3
131      1The IRC requires a minimum live load -- See R301.6.
132      2This 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. Otherwise, contact the local
Building Official.
133      3Values adopted from Table VII of the Utah Snow Load Study
134      4Values based on site-specific study. Contact local Building Official for additional
135      5Contact local Building Official.
136      6Based on Ce =1.0, Ct =1.0 and Is =1.0"
137          (10) IRC, Section R301.6, is deleted and replaced with the following: "R301.6 Utah
138     Snow Loads. The snow loads specified in Table R301.2(5b) shall be used for the jurisdictions
139     identified in that table. Otherwise, the ground snow load, Pg, to be used in the determination of
140     design snow loads for buildings and other structures shall be determined by using the following
141     formula: Pg = (Po2 + S2(A-Ao)2)0.5 for A greater than Ao, and Pg = Po for A less than or equal to
142     Ao.
143     WHERE:
144     Pg = Ground snow load at a given elevation (psf);
145     Po = Base ground snow load (psf) from Table No. R301.2(5a);
146     S = Change in ground snow load with elevation (psf/100 ft.) From Table No. R301.2(5a);
147     A = Elevation above sea level at the site (ft./1,000);
148     Ao = Base ground snow elevation from Table R301.2(5a) (ft./1,000).
149     The building official may round the roof snow load to the nearest 5 psf. The ground snow
150     load, Pg, may be adjusted by the building official when a licensed engineer or architect submits
151     data substantiating the adjustments.
152     Where the minimum roof live load in accordance with Table R301.6 is greater than the design
153     roof snow load, such roof live load shall be used for design, however, it shall not be reduced to
154     a load lower than the design roof snow load. Drifting need not be considered for roof snow
155     loads less than 20 psf."
156          (11) In IRC, Section R302.5.1, the words "self-closing device" are deleted and replaced
157     with "self-latching hardware".
158          (12) IRC, Section R302.13, is deleted.

159          (13) In IRC, Section R303.4, the number "5" is changed to "3" in the first sentence.
160          (14) IRC, Sections R311.7.4 through R311.7.5.3, are deleted and replaced with the
161     following: "R311.7.4 Stair treads and risers. R311.7.5.1 Riser height. The maximum riser
162     height shall be 8 inches (203 mm). The riser shall be measured vertically between leading
163     edges of the adjacent treads. The greatest riser height within any flight of stairs shall not
164     exceed the smallest by more than 3/8 inch (9.5 mm).
165     R311.7.5.2 Tread depth. The minimum tread depth shall be 9 inches (228 mm). The tread
166     depth shall be measured horizontally between the vertical planes of the foremost projection of
167     adjacent treads and at a right angle to the tread's leading edge. The greatest tread depth within
168     any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Winder
169     treads shall have a minimum tread depth of 10 inches (254 mm) measured as above at a point
170     12 inches (305 mm) from the side where the treads are narrower. Winder treads shall have a
171     minimum tread depth of 6 inches (152 mm) at any point. Within any flight of stairs, the
172     greatest winder tread depth at the 12-inch (305 mm) walk line shall not exceed the smallest by
173     more than 3/8 inch (9.5 mm).
174     R311.7.5.3 Profile. The radius of curvature at the leading edge of the tread shall be no greater
175     than 9/16 inch (14.3 mm). A nosing not less than 3/4 inch (19 mm) but not more than 1 1/4
176     inches (32 mm) shall be provided on stairways with solid risers. The greatest nosing projection
177     shall not exceed the smallest nosing projection by more than 3/8 inch (9.5 mm) between two
178     stories, including the nosing at the level of floors and landings. Beveling of nosing shall not
179     exceed 1/2 inch (12.7 mm). Risers shall be vertical or sloped from the underside of the leading
180     edge of the tread above at an angle not more than 30 degrees (0.51 rad) from the vertical. Open
181     risers are permitted, provided that the opening between treads does not permit the passage of a
182     4-inch diameter (102 mm) sphere.
183     Exceptions.
184     1. A nosing is not required where the tread depth is a minimum of 10 inches (254 mm).
185     2. The opening between adjacent treads is not limited on stairs with a total rise of 30 inches
186     (762 mm) or less."
187          (15) IRC, Section R312.2, is deleted.
188          (16) IRC, Sections R313.1 through R313.2.1, are deleted and replaced with the
189     following: "R313.1 Design and installation. When installed, automatic residential fire

190     sprinkler systems for townhouses or one- and two-family dwellings shall be designed and
191     installed in accordance with Section P2904 or NFPA 13D."
192          (17) In IRC, Section 315.3, the following words are added to the first sentence after the
193     word "installed": "on each level of the dwelling unit and".
194          (18) In IRC, Section R315.5, a new exception, 3, is added as follows:
195     "3. Hard wiring of carbon monoxide alarms in existing areas shall not be required where the
196     alterations or repairs do not result in the removal of interior wall or ceiling finishes exposing
197     the structure, unless there is an attic, crawl space or basement available which could provide
198     access for hard wiring, without the removal of interior finishes."
199          (19) A new IRC, Section R315.7, is added as follows: " R315.7 Interconnection.
200     Where more than one carbon monoxide alarm is required to be installed within an individual
201     dwelling unit in accordance with Section R315.1, the alarm devices shall be interconnected in
202     such a manner that the actuation of one alarm will activate all of the alarms in the individual
203     unit. Physical interconnection of smoke alarms shall not be required where listed wireless
204     alarms are installed and all alarms sound upon activation of one alarm.
205     Exception: Interconnection of carbon monoxide alarms in existing areas shall not be required
206     where alterations or repairs do not result in removal of interior wall or ceiling finishes exposing
207     the structure, unless there is an attic, crawl space or basement available which could provide
208     access for interconnection without the removal of interior finishes."
209          (20) In IRC, Section R403.1.6, a new Exception 3 is added as follows: " 3. When
210     anchor bolt spacing does not exceed 32 inches (813 mm) apart, anchor bolts may be placed
211     with a minimum of two bolts per plate section located not less than 4 inches (102 mm) from
212     each end of each plate section at interior bearing walls, interior braced wall lines, and at all
213     exterior walls."
214          (21) In IRC, Section R403.1.6.1, a new exception is added at the end of Item 2 and
215     Item 3 as follows: "Exception: When anchor bolt spacing does not exceed 32 inches (816 mm)
216     apart, anchor bolts may be placed with a minimum of two bolts per plate section located not
217     less than 4 inches (102 mm) from each end of each plate section at interior bearing walls,
218     interior braced wall lines, and at all exterior walls."
219          (22) In IRC, Section R404.1, a new exception is added as follows: "Exception: As an
220     alternative to complying with Sections R404.1 through R404.1.5.3, concrete and masonry

221     foundation walls may be designed in accordance with IBC Sections 1807.1.5 and 1807.1.6 as
222     amended in Section 1807.1.6.4 and Table 1807.1.6.4 under these rules."
223          (23) In IRC, Section R405.1, a new exception is added as follows: "Exception: When a
224     geotechnical report has been provided for the property, a drainage system is not required unless
225     the drainage system is required as a condition of the geotechnical report."
226          Section 2. Section 15A-3-206 is amended to read:
227          15A-3-206. Amendments to Chapters 39, 44, and Appendix F of IRC.
228          (1) In IRC, Section E3901.9, the following exception is added:
229     "Exception: Receptacles or other outlets adjacent to the exterior walls of the garage, outlets
230     adjacent to an exterior wall of the garage, or outlets in a storage room with entry from the
231     garage may be connected to the garage branch circuit."
232          (2) [In] IRC, Section E3902.16[, the following words in the first sentence are deleted: "
233     family rooms, dining rooms, living rooms, parlors, libraries, dens," and "sunrooms, recreation
234     rooms, closets, hallways, and similar rooms or areas."] is deleted.
235          (3) In Section E3902.17:
236          (a) following the word "Exception" the number "1." is added; and
237          (b) at the end of the section, the following sentences are added:
238     "2. This section does not apply for a simple move or an extension of a branch circuit or an
239     outlet which does not significantly increase the existing electrical load. This exception does
240     not include changes involving remodeling or additions to a residence."
241          (4) IRC, Chapter 44, is amended by adding the following reference standard:
242      "Standard reference
TitleReferenced in code
section number
243      USC-FCCCHR 10th
Edition Manual of
Cross Connection
Foundation for Cross-Connection Control
and Hydraulic Research University of
Southern California Kaprielian Hall 300
Los Angeles CA 90089-2531
Table P2902.3"
244          (5) (a) When passive radon controls or portions thereof are voluntarily installed, the
245     voluntary installation shall comply with Appendix F of the IRC.
246          (b) An additional inspection of a voluntary installation described in Subsection (5)(a) is
247     not required.

248          Section 3. Section 15A-6-102 is amended to read:
249          15A-6-102. Nitrogen Oxide emission limits for natural gas-fired water heaters.
250          (1) As used in this section:
251          (a) "BTU" means British Thermal Unit.
252          (b) (i) "Heat input" means the heat of combustion released by fuel burned in a water
253     heater based on the heating value of the fuel.
254          (ii) "Heat input" does not include the enthalpy of a water heater's incoming combustion
255     air.
256          (c) "Heat output" means the enthalpy of a water heater's working fluid output.
257          (d) "Natural gas-fired water heater" means a device that heats water:
258          (i) using natural gas combustion;
259          (ii) for use external to the device at a pressure that is less than or equal to 160 pounds
260     per square inch gage; and
261          (iii) to a thermostatically controlled temperature less than or equal to:
262          (A) 210 degrees Fahrenheit; or
263          (B) 99 degrees Celsius.
264          (e) "ppm" means parts of Nitrogen Oxide per million parts of water heater air output.
265          (f) "Recreational vehicle" means the same as that term is defined in Section 13-14-102.
266          (2) [Subject to Subsection (6)] On and after July 1, 2018, a person may not sell or
267     install a natural gas-fired water heater with an emission rate greater than the following limits:
268          (a) for a water heater that has a heat input of less than or equal to 75,000 BTU per hour
269     that is not installed in a mobile home, a limit of:
270          (i) 10 nanograms per Joule of heat output; or
271          (ii) 15 ppm, corrected to 3% oxygen;
272          (b) for a water heater that has a heat input of greater than 75,000 BTU per hour and less
273     than 2,000,000 BTU per hour that is not installed in a mobile home, a limit of:
274          (i) [10] 14 nanograms per Joule of heat output; or
275          (ii) 20 ppm, corrected to 3% oxygen;
276          (c) for a water heater installed in a mobile home, a limit of:
277          (i) 40 nanograms per Joule of heat output; or
278          (ii) [20] 55 ppm, corrected to 3% oxygen;

279          (d) for a pool or spa water heater with a heat input that is less than or equal to 400,000
280     BTU per hour, a limit of:
281          (i) 40 nanograms per Joule of heat output; or
282          (ii) 55 ppm, corrected to 3% oxygen; and
283          (e) for a pool or spa water heater with a heat input of greater than 400,000 BTU per
284     hour and less than 2,000,000 BTU per hour, a limit of:
285          (i) 14 nanograms per Joule of heat output; or
286          (ii) [55] 20 ppm, corrected to 3% oxygen.
287          (3) A water heater manufacturer shall use California South Coast Air Quality
288     Management District Method 100.1 to calculate the emissions rate of a water heater subject to
289     this section.
290          (4) A water heater manufacturer shall display on a water heater subject to this section,
291     as a permanent label, the model number and the Nitrogen Oxide emission rate of the water
292     heater.
293          (5) The requirements of this section do not apply to:
294          (a) a water heater using a fuel other than natural gas;
295          (b) a water heater used in a recreational vehicle;
296          (c) a water heater manufactured in the state for sale and shipment outside of the state;
297     or
298          (d) a water heater manufactured before July 1, 2018.
299          [(6) Subsection (2) applies to the sale or installation of a water heater on or after July 1,
300     2018.]