§ 8-18.6. Amendments and changes to the International Residential Code, 2009 Edition.
(a)
The International Residential Code, 2006 Edition, is amended and changed in the following respects:
(1)
Amend Section R202, Definitions, by adding the following definition:
Sleeping room. Any room in the house that is greater than seventy (70) square feet, has built-in closet space and typically could be used as a bedroom. This does not include rooms used for cooking, eating, family living or gathering and excludes bathrooms, toilet rooms, halls, storage, utility and workshop space and all unconditioned space.
(2)
Amend Section R202, Definitions. Change the definition of townhouse to read:
Townhouse. A single family dwelling unit constructed in a group of three (3) or more attached units in which each unit extends from foundation to roof and with a yard or public way on at least two (2) sides.
(3)
Amend table R301.2(1). Climatic and Geographic Design Criteria, by adding the following:
k.
Slopes equal to or greater than 4 in 12.
l.
Slopes less than 4 in 12.
Table R301.2(1) Roof Snow Load Wind Speed* (Mph) Seismic Design Category* SUBJECT TO DAMAGE FROM Winter Design Tempr Flood Hazards Ice Barrier Req'd Flood Hazards Air Freezing Index Mean Annual Temp Weather
-ingnFrost line depthl Termite Decay 20 ; 30j 90 A Severe 42" M-H S-M -3O 1971 YES 1965 1680 51.2O (4)
Amend table R301.5, Minimum uniformly distributed live load, by changing the number "30" (live load for sleeping rooms) and replacing it with the number "40."
(5)
Amend Section: R302.2 Townhouses. Change the exception to read as follows:
Exception: A common two (2) hour fire resistance rated wall is permitted for townhouses if such walls do not contain plumbing or mechanical equipment, ducts of vents in the cavity of the common wall. Electrical, cable and telephone installations are permitted, but shall be installed in raceways and metallic outlet boxes. Electrical installation shall be installed in accordance with Chapters 34 through 43. Penetrations of electrical boxes shall be in accordance with Section R302.4. The fire resistance rating of the common wall may be reduced to not less than one hour provided the building is equipped with an automatic sprinkler system installed in accordance with NFPA 13, provided the common wall does not contain plumbing or mechanical equipment, ducts or vents, and electrical, cable, and telephone installations are installed in raceways and metallic boxes.
(6)
Amend Section: R302.3 Two family dwellings. Delete exception #1 in its entirety.
(7)
Amend Section R307.1 Space required, to provide as follows:
Fixtures shall be spaced as per Chapter 27 of the Bellevue Plumbing Code.
Delete Figure 307.1 Minimum fixture clearances, in its entirety.
(8)
Amend Section R311.4.3 Landings at doors, by changing exception 2 to read:
2. The exterior landing at an exterior doorway shall not be more than 7¾" (196mm) below the top of the finished floor, provided the door, other than an exterior storm or screen door does not swing over the landing.
(9)
Amend Section R311.7.2 Headroom. Add the following as a second paragraph:
The Building Official shall have the authority to waive the requirements of this section where pre-existing conditions will not allow the requirements to be met.
(10)
Amend Section: R311.7.7.2 Continuity. Add exception 3 to read as follows:
Exception 3. Handrails for stairways shall be permitted to have no more than a 4" break (102mm) due to wall offsets and other ornamental features.
(11)
Amend Section R312.3 Guard opening limitations, by adding the following:
Exception 3. Required guard rail openings on decks, balconies and openings between floors shall not be constructed with horizontal rails or other ornamental patterns that result in a ladder effect.
(12)
Section R313 Automatic Fire Sprinkler Systems. Delete in its entirety.
(13)
Amend Section: R317.1 Location required. Change location #2 to read as follows:
All wood framing members, sills, or plates that rest on concrete or masonry walls.
(14)
Amend Section: R317.1.4 Wood columns. Delete both exceptions and replace with:
Exception: Interior columns, either exposed or enclosed within the framing cavity, provided such columns are separated from any concrete or masonry by approved wood of natural resistance to decay or approved pressure-preservative treated wood.
(15)
Section R322.2.1 Elevation requirements. Change requirement 1 to read as follows:
1.
Buildings and structures shall have the lowest floors elevated to a level one (1) foot minimum above the design flood elevation
(16)
Section R403.1.1 Minimum size.
Minimum sizes for concrete or masonry footings shall be as set forth in Table R403.1 and Figure R403.1(1). The footing width, W, shall be based on the load-bearing value of the soil in accordance with Table R401.4.1. Spread footings shall be at least eight (8) inches (203mm) thick. Footing projections, P, shall be at least two (2) inches (51mm) and shall not exceed the thickness of the footing. The size of the footings supporting piers and columns shall be based on the tributary load and allowable soil pressure in accordance with Table R401.4.1. Footings for wood foundations shall be in accordance with the details set forth in Section R403.2, and Figures R403.1(2) and R403.1(3).
(17)
Delete Figure R403.1(1) in its entirety and replace it with Figure R403.1(1) Minimum footing and foundation requirements, as amended.
(18)
Figure R403.1(2) delete all reference to gravel footings and replace with:
Footings shall comply with Section R403.
(19)
Figure R403.1(3) delete all references to gravel footings and replace with:
Footings shall comply with Section R403.
(20)
Section 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:
1.
Extended below the frost line specified in Table R301.2(1);
2.
Constructed in accordance with ASCE 32; or
3.
Erected on solid rock.
Exceptions:
1.
Protection of free standing accessory structures with an area of 750 square feet or less, of light framed construction, with an eave height of ten feet or less shall not be required.
2.
Protection of freestanding accessory structures with an area of 400 square feet or less, of other than light framed construction, with an eave height of ten feet or less shall not be required.
3.
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 the frozen condition is permanent.
General note:
1.
Footing widths must be at least twice the foundation wall thickness. Two story brick veneer must have minimum 20" wide footings.
2.
Anchor bolts spacing 6' o.c. max. or the same as rebar spacing, whichever is less, and 12" from each end of sill.
3.
Minimum thickness of any slab on grade shall be 3½".
4.
Foundations shall extend not less than 12" below the top of the floor slab.
5.
Footing sizes are based on an assumed soil bearing pressure of 1500 lbs./sq. ft. Footings on soil with a lower allowable soil pressure shall be designed in accordance with good engineering practice.
6.
Deck footings shall be twice the diameter of the supporting member.
(21)
Section R403.2 Footings for wood foundations.
Footings for wood foundations shall be in accordance with Figures R403.1(2) and R403.1(3).
(22)
Delete Section R403.3 Frost protection shallow footings in its entirety.
(23)
Delete Table R403.3.(1) in its entirety.
(24)
Delete Figure R403.3(3) in its entirety.
(25)
Delete Sections R403.3.1, R403.3.1.1, R403.3.1.2, R403.3.2, R403.3.3.3, and R403.3.4 in their entirety.
(26)
Delete Figure R403.3(4) in its entirety.
(27)
Delete Table R404.1(1) in its entirety, and replace it with Table R404.1(1) as amended.
(28)
Delete Section R404.1.1 in its entirety.
(29)
Delete Section R404.1.2 in its entirety.
(30)
Delete Table R404.1.1(1) in its entirety and replace it with Table R404.1(1) as amended.
(31)
Delete Table R404.1.1(2) in its entirety and replace it with Table R404.1(1) as amended.
(32)
Delete Table R404.1.1(3) in its entirety, and replace it with Table R404.1(1) as amended.
(33)
Delete Table R404.1.1(4) in its entirety and replace it with Table R404.1(1 as amended.)
_____
TABLE R404.1(1)
Vertical reinforcement required for basement walls subjected to no more soil pressure than would be exerted by an equivalent fluid having a weight of 35 pounds per cubic foot (6).
(1) (2) (3) (4) (5) Wall Type Distance of Wall to Ground Surface Wall Thickness Vertical Wall Span Required Vertical Reinforcing Masonry or concrete 6" or more 8" 8'8" or less No. 5 @ 40" 8"0" or less No. 5 @ 48" 10" 8"8" or less No. 5 @ 48" 8"0" or less No. 5 @ 56" 12" 8"8" or less No. 5 @ 56" 8"0" or less No. 5 @ 64" 16" or more 8" 8"8" or less No. 5 @ 48" 8"0" or less No. 5 @ 56" 10" 8"8" or less No. 5 @ 64" 12" 8"8" or less No. 5 @ 64" 24" or more 8" or more 8"8" or less No. 5 @ 64" 48: or more 8" or more 8"8" or less None Required 1.
This table applies to hollow unit masonry, or to solid concrete walls.
2.
This table is only applicable where the exterior grade is above the basement slab on one or more sides of the basement. The distance in column 2 is to be measured from the top of the masonry or concrete wall down to the finish grade after final grading.
3.
The thicknesses given are nominal. The actual wall thickness may be three-eighths inch less than nominal.
4.
This table applies only to walls which span vertically between levels at which resistance to inward movement is provided by a minimum 3½ inch thick concrete floor slab at the bottom and an anchoring system as defined in Section R404.1.
5.
All reinforcing steel utilized based on this table shall be of Grade 60 and shall be placed not more than 1½" from the inside of the face of the wall.
6.
Masonry walls must comply with Section R609.
7.
Walls which do not fall within the limitations of this table shall be designed by a registered engineer licensed in the State of Nebraska.
8.
Anchor bolts shall be 5/8" diameter with a 3/16th" x 2" galvanized washer and nut. Bolts shall be embedded a minimum 7" into concrete and 15" into masonry
_____
(34)
Change Section R502.6.2 Joist Framing, to read as follows:
Joist framed into the side of a wood girder shall be supported by approved framing anchors.
(35)
Change Section R602.6 Drilling and notching-studs, to read as follows: Drilling and notching of studs shall be in accordance with the following:
1.
Notching. Any stud in an exterior wall or bearing partition may be cut or notched to a depth not exceeding twenty-five (25) percent of its width. Studs in nonbearing partitions may be notched to a depth not to exceed forty (40) percent of a single stud width. All studs in exterior wall or bearing partitions that are notched more than ten (10) percent shall be doubled.
2.
Drilling. Any stud may be bored or drilled, provided that the diameter of the resulting hole is no more than sixty (60) percent of the stud width, the edge of the hole is no more than 5/8" to the edge of the stud, and the hole is not located in the same section as a cut or notch. Studs located in exterior walls or bearing partitions drilled over forty (40) percent and up to sixty (60) percent shall also be doubled with no more than two successive doubled studs bored. See Figures R602.6(1) and R602.6(2).
Exception: Use of approved stud shoes is permitted when they are installed in accordance with the manufacturer's recommendations.
(36)
Section R612.2 Window Sills. Delete this section in its entirety.
(37)
Table R802.11 Required Strength of Truss or Rafter Connections to Resist Wind Uplift Forces. Add footnote G to read as follows:
g.
Wind uplift calculations, prepared by a structural engineer, shall be provided at the time of the framing inspection, for all structures built without uplift connections as prescribed by this table.
(38)
Amend Section R903.4 Roof drainage. Add to existing paragraph as follows:
When roofs are sloped to drain over the edge, scuppers or gutters and down spouts, adequately sized, pitched and supported, shall be installed to conduct rain water to ground level. Rain water shall be discharged at least three (3) feet away from the building foundation in a direction parallel to the adjoining property line when the discharge point is within twenty (20) feet of the adjoining property line.
Exception: Structures with no sub-grade spaces.
(39)
Section R905.2.5, Fasteners. Delete the content of such section in its entirety and substitute with the following:
Fasteners for asphalt shingles shall be galvanized steel, stainless steel, aluminum or copper roofing nails, minimum 12 gage shank with a minimum 3/8 inch diameter head, ASTM F 1667, or if approved by the manufacturer, corrosion resistant staples, minimum 16 gage 15/16 inch crown width of a length to penetrate the roofing materials and a minimum of ¾ inch into the roof sheathing. Where the roof sheathing is less than ¾ inch thick, the fasteners shall penetrate through the sheathing. Fasteners shall comply with ASTM F 1667.
(40)
Amend Section 905.2.7.1, by deleting the content of such section in its entirety and substitute with the following:
Section R905.2.7.1, Ice Protection. In areas where the average daily temperature in January is 25;deg; F (- 4;deg;C) or less, an ice barrier that consists of at least two (2) layers of Type 151b. felt, solidly cemented together, or one layer of No. 40 coated roofing or coated glass base felt shall be used in lieu of normal underlayment, either application shall extend from the eave's edge to a point at least 24 inches (610 mm) inside the exterior wall line of the building, with all laps cemented together or a self- adhering polymer modified bitumen sheet installed per manufacturer's listing.
(41)
Amend Section 905.4.3 and substitute with the following:
Section R905.4.3.1 Ice Barrier. In areas where the average daily temperature in January is 25;deg; F (- 4;deg;C) or less, an ice barrier that consists of at least two (2) layers of Type 151b. felt, solidly cementedtogether, or one (1) layer of No. 40 coated roofing or coated glass base felt shall be used in lieu of normal underlayment, either application shall extend from the eave's edge to a point at least 24 inches (610 mm) inside the exterior wall line of the building, with all laps cemented together, or a self- adhering polymer modified bitumen sheet installed per manufacturer's listing.
(42)
Amend Section 905.5.3 and substitute with the following:
Section R905.5.3.1 Ice Barrier. In areas where the average daily temperature in January is 25;deg; F (- 4;deg;C) or less, an ice barrier that consists of at least two (2) layers of Type 151b. felt, solidly cemented together, or one (1) layer of No. 40 coated roofing or coated glass base felt shall be used in lieu of normal underlayment, either application shall extend from the eave's edge to a point at least 24 inches (610 mm) inside the exterior wall line of the building, with all laps cemented together, or a self- adhering polymer modified bitumen sheet installed per manufacturer's listing.
(43)
Amend Section 905.6.3 and substitute with the following:
Section R905.6.3.1, Ice Barrier. In areas where the average daily temperature in January is 25;deg; F (- 4;deg;C) or less, an ice barrier that consists of at least two (2) layers of Type 151b. felt, solidly cemented together, or one (1) layer of No. 40 coated roofing or coated glass base felt shall be used in lieu of normal underlayment, either application shall extend from the eave's edge to a point at least 24 inches (610 mm) inside the exterior wall line of the building, with all laps cemented together, or a self-adhering polymer modified bitumen sheet installed per manufacturer's listing.
(44)
Amend Section 905.7.3 and substitute with the following:
Section R905.7.3.1, Ice Barrier. In areas where the average daily temperature in January is 25;deg;F (- 4;deg;C) or less, an ice barrier that consists of at least two (2) layers of Type 151b. felt, solidly cemented together, or one (1) layer of No. 40 coated roofing or coated glass base felt shall be used in lieu of normal underlayment, either application shall extend from the eave's edge to a point at least 24 inches (610 mm) inside the exterior wall line of the building, with all laps cemented together, or a self-adhering polymer modified bitumen sheet installed per manufacturer's listing.
(45)
Section R905.7.6, Valley flashing. Change the first sentence to read as follows:
Roof flashing shall be not less than No. 26 gage [.019 inches (.5mm)] 28 gage [.018 inches (.4mm)] corrosion resistant sheet metal and shall extend 10 inches (254mm) from the centerline each way for roofs having slopes less than 12 units vertical in 12 units horizontal (100% slope), and 7 inches (178mm) from the centerline each way for slopes 12 units vertical in 12 units horizontal or greater.
(46)
Amend Section 905.8.3 Ice protection, by deleting the content of such section and substitute with the following:
Section R905.8.3.1 Ice Barrier. In areas where the average daily temperature in January is 25;deg; F (- 4;deg;C) or less, an ice barrier that consists of at least two (2) layers of Type 151b. felt, solidly cemented together, or one (1) layer of No. 40 coated roofing or coated glass base felt shall be used in lieu of normal underlayment, either application shall extend from the eave's edge to a point at least 24 inches (610 mm) inside the exterior wall line of the building, with all laps cemented together, or a self-adhering polymer modified bitumen sheet installed per manufacturer's listing.
(47)
Section R905.8.8 Valley flashing. Change the first section to read as follows:
Roof flashing shall not be less than No. 26 gage (.019mm) 28 gage [.018 inches (.04mm)] corrosion resistant sheet metal and shall extend at least 11 inches (279 mm) from the centerline each way.
(48)
Section R907.3 Re-covering versus replacement. Change condition 2 to read as follows:
2. Where the existing roof covering is wood shake, wood shingle, slate, clay, cement or asbestos-cement tile.
(49)
Section R907.4 Roof covering. Delete this section in its entirety
(50)
Amend Section: R1006.2 Exterior air intake, to provide as follows:
The exterior air intake shall be capable of providing all combustion air from the exterior of the dwelling or from spaces within the dwelling ventilated with outside air such as crawl or attic spaces. The exterior air intake shall not be located within the garage or basement of the dwelling. The exterior air intake shall be covered with a corrosion-resistant screen of ¼ inch (6.4 mm) mesh.
(51)
Amend Section N1102.1 Thermal performance criteria, by deleting the content of such section in its entirety and substitute with the following:
Section N1102.1 Thermal performance criteria. The minimum required insulation R-value or maximum required U-factor for each element in the building thermal envelope (fenestration, roof/ceiling, opaque wall, floor, slab edge, crawl space wall and basement wall) shall be in accordance with the criteria in Table N1102.1 of the 2009 International Residential Code.
(52)
Delete Chapter 25 through Chapter 32 in their entirety and substitute the same with the following:
a.
The plumbing requirements shall conform to the provisions of Chapter 27 of the Bellevue City Code.
b.
Fire sprinkler systems shall be installed in accordance with NFPA 13.
(53)
Delete Chapter 33 through Chapter 42 in their entirety and substitute the same with the following:
The electrical requirements shall conform to the provisions of Chapter 10 of the Bellevue City Code.
(Ord. No. 3334, § 1, 10-11-2004; Ord. No. 3377, § 1, 10-24-2005; Ord. No. 3518, § 1, 5-11-2009; Ord. No. 3654, § 1, 11-28-2011)