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H.B. 383 Enrolled

             1     

INTERNATIONAL RESIDENTIAL CODE AMENDMENTS

             2     
2012 GENERAL SESSION

             3     
STATE OF UTAH

             4     
Chief Sponsor: Jeremy A. Peterson

             5     
Senate Sponsor: Curtis S. Bramble

             6     
             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          .    adds a provision to the adopted International Residential Code stating that a
             13      physical change to a structure with a nonconforming legal rental housing use for an
             14      egress bedroom window is not necessary under certain circumstances.
             15      Money Appropriated in this Bill:
             16          None
             17      Other Special Clauses:
             18          None
             19      Utah Code Sections Affected:
             20      AMENDS:
             21          15A-3-202, as enacted by Laws of Utah 2011, Chapter 14
             22     
             23      Be it enacted by the Legislature of the state of Utah:
             24          Section 1. Section 15A-3-202 is amended to read:
             25           15A-3-202. Amendments to Chapters 1 through 5 of IRC.
             26          (1) In IRC, Section R102, a new Section R102.7.2 is added as follows:
             27          "R102.7.2 Physical change for bedroom window egress in legal nonconforming rental
             28      housing use. A structure classified as a legal nonconforming rental housing use, whose egress
             29      bedroom window is smaller than required by this code, is not required to undergo a physical


             30      change to conform to this code if the change would compromise the structural integrity of the
             31      building or could not be completed in accordance with other applicable requirements of this
             32      code, including setback and window well requirements."
             33          [(1)] (2) In IRC, Section 109:
             34          (a) A new IRC, Section 109.1.5, is added as follows: "R109.1.5 Weather-resistant
             35      exterior wall envelope inspections. An inspection shall be made of the weather-resistant
             36      exterior wall envelope as required by Section R703.1 and flashings as required by Section
             37      R703.8 to prevent water from entering the weather-resistive barrier."
             38          (b) The remaining sections are renumbered as follows: R109.1.6 Other inspections;
             39      R109.1.6.1 Fire- and smoke-resistance-rated construction inspection; R109.1.6.2 Reinforced
             40      masonry, insulating concrete form (ICF) and conventionally formed concrete wall inspection;
             41      and R109.1.7 Final inspection.
             42          [(2)] (3) IRC, Section R114.1, is deleted and replaced with the following: "R114.1
             43      Notice to owner. Upon notice from the building official that work on any building or structure
             44      is being prosecuted contrary to the provisions of this code or other pertinent laws or ordinances
             45      or in an unsafe and dangerous manner, such work shall be immediately stopped. The stop
             46      work order shall be in writing and shall be given to the owner of the property involved, or to
             47      the owner's agent or to the person doing the work; and shall state the conditions under which
             48      work will be permitted to resume."
             49          [(3)] (4) In IRC, Section R202, the following definition is added: "CERTIFIED
             50      BACKFLOW PREVENTER ASSEMBLY TESTER: A person who has shown competence to
             51      test Backflow prevention assemblies to the satisfaction of the authority having jurisdiction
             52      under Utah Code, Subsection 19-4-104 (4)."
             53          [(4)] (5) In IRC, Section R202, the definition of "Cross Connection" is deleted and
             54      replaced with the following: "CROSS CONNECTION. Any physical connection or potential
             55      connection or arrangement between two otherwise separate piping systems, one of which
             56      contains potable water and the other either water of unknown or questionable safety or steam,
             57      gas, or chemical, whereby there exists the possibility for flow from one system to the other,


             58      with the direction of flow depending on the pressure differential between the two systems (see
             59      "Backflow, Water Distribution")."
             60          [(5)] (6) In IRC, Section R202, the definition of "Potable Water" is deleted and
             61      replaced with the following: "POTABLE WATER. Water free from impurities present in
             62      amounts sufficient to cause disease or harmful physiological effects and conforming to the
             63      Utah Code, Title 19, Chapters 4, Safe Drinking Water Act, and 5, Water Quality Act, and the
             64      regulations of the public health authority having jurisdiction."
             65          [(6)] (7) IRC, Figure R301.2(5), is deleted and replaced with Table R301.2(5a) and
             66      Table R301.2(5b) as follows:
             67     
"TABLE NO. R301.2(5a)
             68     
STATE OF UTAH - REGIONAL SNOW LOAD FACTORS
             69      COUNTY Po S Ao
             70      Beaver 43 63 6.2
             71      Box Elder 43 63 5.2
             72      Cache 50 63 4.5
             73      Carbon 43 63 5.2
             74      Daggett 43 63 6.5
             75      Davis 43 63 4.5
             76      Duchesne 43 63 6.5
             77      Emery 43 63 6.0
             78      Garfield 43 63 6.0
             79      Grand 36 63 6.5
             80      Iron 43 63 5.8
             81      Juab 43 63 5.2
             82      Kane 36 63 5.7
             83      Millard 43 63 5.3
             84      Morgan 57 63 4.5
             85      Piute 43 63 6.2
             86      Rich 57 63 4.1
             87      Salt Lake 43 63 4.5
             88      San Juan 43 63 6.5
             89      Sanpete 43 63 5.2
             90      Sevier 43 63 6.0
             91      Summit 86 63 5.0
             92      Tooele 43 63 4.5
             93      Uintah 43 63 7.0
             94      Utah 43 63 4.5
             95      Wasatch 86 63 5.0
             96      Washington 29 63 6.0
             97      Wayne 36 63 6.5
             98      Weber 43 63 4.5
             99     
TABLE NO. R301.2(5b)
             100     
RECOMMENDED SNOW LOADS FOR SELECTED UTAH CITIES AND TOWNS(2)
             101      Roof Snow
Load (PSF)
Ground Snow
Load (PSF)
             102      Beaver County
             103          Beaver 5,920 ft. 43 62
             104      Box Elder County
             105          Brigham City 4,300 ft. 30 43
             106          Tremonton 4,290 ft. 30 43
             107      Cache County
             108          Logan 4,530 ft. 35 50
             109          Smithfield 4,595 ft. 35 50
             110      Carbon County
             111          Price 5,550 ft. 30 43
             112      Daggett County
             113          Manila 5,377 ft. 30 43
             114      Davis County
             115          Bountiful 4,300 ft. 30 43
             116          Farmington 4,270 ft. 30 43
             117          Layton 4,400 ft. 30 43
             118          Fruit Heights 4,500 ft. 40 57
             119      Duchesne County
             120          Duchesne 5,510 ft. 30 43
             121          Roosevelt 5,104 ft. 30 43
             122      Emery County
             123          Castle Dale 5,660 ft. 30 43
             124          Green River 4,070 ft. 25 36
             125      Garfield County
             126          Panguitch 6,600 ft. 30 43
             127      Grand County
             128          Moab 3,965 ft. 25 36
             129      Iron County
             130          Cedar City 5,831 ft. 30 43
             131      Juab County
             132          Nephi 5,130 ft. 30 43
             133      Kane County
             134          Kanab 5,000 ft. 25 36
             135      Millard County
             136          Fillmore 5,000 ft. 30 43
             137          Delta 4,623 ft. 30 43
             138      Morgan County
             139          Morgan 5,064 ft. 40 57
             140      Piute County
             141          Piute 5,996 ft. 30 43
             142      Rich County
             143          Woodruff 6,315 ft. 40 57
             144      Salt Lake County
             145          Murray 4,325 ft. 30 43
             146          Salt Lake City 4,300 ft. 30 43
             147          Sandy 4,500 ft. 30 43
             148          West Jordan 4,375 ft. 30 43
             149          West Valley 4,250 ft. 30 43
             150      San Juan County
             151          Blanding 6,200 ft. 30 43
             152          Monticello 6,820 ft. 35 50
             153      Sanpete County
             154          Fairview 6,750 ft. 35 50
             155          Mt. Pleasant 5,900 ft. 30 43
             156          Manti 5,740 ft. 30 43
             157          Ephraim 5,540 ft. 30 43
             158          Gunnison 5,145 ft. 30 43
             159      Sevier County
             160          Salina 5,130 ft. 30 43
             161          Richfield 5,270 ft. 30 43
             162      Summit County
             163          Coalville 5,600 ft. 60 86
             164          Kamas 6,500 ft. 70 100
             165          Park City 6,800 ft. 100 142
             166          Park City 8,400 ft. 162 231
             167          Summit Park 7,200 ft. 90 128
             168      Tooele County
             169          Tooele 5,100 ft. 30 43
             170      Uintah County
             171          Vernal 5,280 ft. 30 43
             172      Utah County
             173          American Fork 4,500 ft. 30 43
             174          Orem 4,650 ft. 30 43
             175          Pleasant Grove 5,000 ft. 30 43
             176          Provo 5,000 ft. 30 43
             177          Spanish Fork 4,720 ft. 30 43
             178      Wasatch County
             179          Heber 5,630 ft. 60 86
             180      Washington County
             181          Central 5,209 ft. 25 36
             182          Dameron 4,550 ft. 25 36
             183          Leeds 3,460 ft. 20 29
             184          Rockville 3,700 ft. 25 36
             185          Santa Clara 2,850 ft. 15 (1) 21
             186          St. George 2,750 ft. 15 (1) 21
             187      Wayne County
             188          Loa 7,080 ft. 30 43
             189          Hanksville 4,308 ft. 25 36
             190      Weber County
             191          North Ogden 4,500 ft. 40 57
             192          Ogden 4,350 ft. 30 43
             193      NOTES
             194      (1) The IRC requires a minimum live load - See R301.6.
             195      (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."
             196          [(7)] (8) IRC, Section R301.6, is deleted and replaced with the following: "R301.6
             197      Utah Snow Loads. The ground snow load, Pg, to be used in the determination of design snow
             198      loads for buildings and other structures shall be determined by using the following formula: Pg
             199      = (Po2 + S2(A-Ao)2)0.5 for A greater than Ao, and Pg = Po for A less than or equal to Ao.
             200      WHERE:
             201      Pg = Ground snow load at a given elevation (psf);
             202      Po = Base ground snow load (psf) from Table No. R301.2(5a);
             203      S = Change in ground snow load with elevation (psf/100 ft.) From Table No. R301.2(5a);
             204      A = Elevation above sea level at the site (ft./1,000);
             205      Ao = Base ground snow elevation from Table R301.2(5a) (ft./1,000).
             206      The building official may round the roof snow load to the nearest 5 psf. The ground snow
             207      load, Pg, may be adjusted by the building official when a licensed engineer or architect submits
             208      data substantiating the adjustments. A record of such action together with the substantiating
             209      data shall be provided to the division for a permanent record.
             210      The building official may also directly adopt roof snow loads in accordance with Table
             211      R301.2(5b), provided the site is no more than 100 ft. higher than the listed elevation.


             212      Where the minimum roof live load in accordance with Table R301.6 is greater than the design
             213      roof snow load, such roof live load shall be used for design, however, it shall not be reduced to
             214      a load lower than the design roof snow load. Drifting need not be considered for roof snow
             215      loads less than 20 psf."
             216          [(8)] (9) In IRC, Section R302.2, the words "Exception: A" are deleted and replaced
             217      with the following: "Exceptions: 1. A common 2-hour fire-resistance-rated wall is permitted
             218      for townhouses if such walls do not contain plumbing or mechanical equipment, ducts or vents
             219      in the cavity of the common wall. Electrical installation shall be installed in accordance with
             220      Chapters 34 through 43. Penetrations of electrical outlet boxes shall be in accordance with
             221      Section R302.4.
             222          2. In buildings equipped with an automatic residential fire sprinkler system, a".
             223          [(9)] (10) In IRC, Section R302.2.4, a new exception 6 is added as follows: "6.
             224      Townhouses separated by a common 2-hour fire-resistance-rated wall as provided in Section
             225      R302.2."
             226          [(10)] (11) IRC, Sections R311.7.4 through R311.7.4.3, are deleted and replaced with
             227      the following: "R311.7.4 Stair treads and risers. R311.7.4.1 Riser height. The maximum riser
             228      height shall be 8 inches (203 mm). The riser shall be measured vertically between leading
             229      edges of the adjacent treads. The greatest riser height within any flight of stairs shall not
             230      exceed the smallest by more than 3/8 inch (9.5 mm).
             231      R311.7.4.2 Tread depth. The minimum tread depth shall be 9 inches (228 mm). The tread
             232      depth shall be measured horizontally between the vertical planes of the foremost projection of
             233      adjacent treads and at a right angle to the tread's leading edge. The greatest tread depth within
             234      any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5 mm). Winder
             235      treads shall have a minimum tread depth of 10 inches (254 mm) measured as above at a point
             236      12 inches (305 mm) from the side where the treads are narrower. Winder treads shall have a
             237      minimum tread depth of 6 inches (152 mm) at any point. Within any flight of stairs, the
             238      greatest winder tread depth at the 12-inch (305 mm) walk line shall not exceed the smallest by
             239      more than 3/8 inch (9.5 mm).


             240      R311.7.4.3 Profile. The radius of curvature at the leading edge of the tread shall be no greater
             241      than 9/16 inch (14.3 mm). A nosing not less than 3/4 inch (19 mm) but not more than 1 1/4
             242      inches (32 mm) shall be provided on stairways with solid risers. The greatest nosing projection
             243      shall not exceed the smallest nosing projection by more than 3/8 inch (9.5 mm) between two
             244      stories, including the nosing at the level of floors and landings. Beveling of nosing shall not
             245      exceed 1/2 inch (12.7 mm). Risers shall be vertical or sloped from the underside of the leading
             246      edge of the tread above at an angle not more than 30 degrees (0.51 rad) from the vertical. Open
             247      risers are permitted, provided that the opening between treads does not permit the passage of a
             248      4-inch diameter (102 mm) sphere.
             249      Exceptions.
             250      1. A nosing is not required where the tread depth is a minimum of 10 inches (254 mm).
             251      2. The opening between adjacent treads is not limited on stairs with a total rise of 30 inches
             252      (762 mm) or less."
             253          [(11)] (12) In IRC, Section R312.2, the words "adjacent fixed seating" are deleted.
             254          [(12)] (13) IRC, Section R313, is deleted.
             255          [(13)] (14) IRC, Section R315.1, is deleted and replaced with the following: "R315.1
             256      Carbon monoxide alarms. For new construction, a listed carbon monoxide alarm shall be
             257      installed on each habitable level of dwelling units within which fuel-fired appliances are
             258      installed and in dwelling units that have attached garages."
             259          [(14)] (15) IRC, Section R315.3, is deleted and replaced with the following: "R315.3
             260      Alarm requirements. Listed single- and multiple-station carbon monoxide alarms shall comply
             261      with UL 2034 and shall be installed in accordance with the provision of this code and NFPA
             262      720."
             263          [(15)] (16) In IRC, Section R403.1.6, a new Exception 4 is added as follows: "4.
             264      When anchor bolt spacing does not exceed 32 inches (813 mm) apart, anchor bolts may be
             265      placed with a minimum of two bolts per plate section located not less than 4 inches (102 mm)
             266      from each end of each plate section at interior bearing walls, interior braced wall lines, and at
             267      all exterior walls."


             268          [(16)] (17) In IRC, Section R403.1.6.1, a new exception is added at the end of Item 2
             269      and Item 3 as follows: "Exception: When anchor bolt spacing does not exceed 32 inches (816
             270      mm) apart, anchor bolts may be placed with a minimum of two bolts per plate section located
             271      not less than 4 inches (102 mm) from each end of each plate section at interior bearing walls,
             272      interior braced wall lines, and at all exterior walls."
             273          [(17)] (18) In IRC, Section R404.1, a new exception is added as follows: "Exception:
             274      As an alternative to complying with Sections R404.1 through R404.1.5.3, concrete and
             275      masonry foundation walls may be designed in accordance with IBC Sections 1807.1.5 and
             276      1807.1.6 as amended in Section 1807.1.6.4 and Table 1807.1.6.4 under these rules."


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