Prior to the adoption of Ord. 19355 on 01/02/2007, Section 6-66 read as follows.

     The code adopted by this article is hereby amended by substituting the following sections in lieu of these sections with corresponding numbers in the code, or, where there is no corresponding section in the code, the following sections shall be enacted as additions to the code:

R101.1 Title: These provisions shall be known as the Residential Code for One- and Two-Family Dwellings of the City of Columbia, and shall be cited as such and will be referred to herein as “this code.”

R103.1 Creation of enforcement agency: (Delete)

R103.2 General: The building official is hereby authorized and directed to administer and enforce all provisions of this code.  The building official shall be the director of public works.

R104.10.1 Areas prone to flooding. (Delete)

R105.2, No. 2.: Fences not over twelve (12) feet high.

R112.1 General:  Any aggrieved person shall have the right to appeal a decision of the code official  to the building construction codes commission.  Applications for appeal shall be filed in accordance with the procedures set out in Section 112.0 of the International Building Code of 2000 as amended by section 6-17 of the Code of Ordinances.  Applications must be filed within twenty (20) days of the decision of the code official.

R112.2.1 Determination of substantial improvements in areas prone to flood: (Delete)

R112.2.2 Criteria for issuance of a variance for areas prone to flooding: (Delete)

R112.3 Qualifications: (Delete)

R113.4 Violation penalties: Any person who shall violate a provision of this code or shall fail to comply with any of the requirements thereof, shall be guilty of a misdemeanor and upon conviction thereof, shall be punished by a fine of not more than one thousand dollars ($1,000.00) or by imprisonment not exceeding one year, or by both such fine and imprisonment.  Each day that a violation continues shall be deemed a separate offense.

Table 301.2a - The following values shall be inserted in the appropriate spaces:

Roof Snow Load - 20; Wind - 90; Seismic Condition - 1; Weathering - Yes, Severe; Frost Line Depth - Yes, 30 inches; Termite - Moderate to Heavy; Decay - Slight to Moderate; Winter Design Temp - +4 Degrees F; Flood Hazards

R307.3 Water Closet: All water closets shall be spaced fifteen (15) inches from the centerline of the fixture to any wall or plumbing fixture.

R309.2  Separation required:  The garage shall be completely separated from the residence and its attic area by means of 5/8-inch gypsum board or equivalent applied to the garage side

R314.2   Treads and risers: The maximum riser height shall be 8 1/4 inches and the minimum tread depth shall be 9 inches.  The riser height shall be measured vertically between leading edges of the adjacent treads.  The tread depth shall be measured horizontally between the vertical planes of the foremost projection of adjacent treads and at a right angle to the tread’s leading edge.  The walking surface of treads and landings of a stairway shall be sloped no steeper than one unit vertical in 48 units horizontal (2-percent slope).  The greatest riser height within any flight of stairs shall not exceed the smallest by more than 3/8 inch (9.5mm).

R314.4   Winders:   Winders are permitted, provided that the width of the tread at a point not more than 12 inches (305mm) from the side where the treads are narrower is not less than 9 inches and the minimum width of any tread is not less than 6 inches (153 mm).  The continuous handrail required by Section 315.1 shall be located on the side where the tread is narrower.

R314.6  Circular stairways:   Circular stairways shall have a minimum tread depth and a maximum riser height in accordance with  Section 314.2 and the smaller radius shall not be less than twice  the width of the stairway.  The minimum tread depth of 9 inches shall be measured from the narrower end.

R317.2  Power source:  In new construction, required smoke detectors shall receive their primary power from the building wiring when such wiring is served from a commercial source.  In addition to the required primary power source, required smoke detectors shall receive power from a battery when the primary power source is interrupted.  Smoke detectors may be battery operated when installed in existing buildings, or in buildings without commercial power, or in buildings which undergo alterations, repairs or additions regulated by Section R317.1.1.

N1101.2 Compliance:

Exception #1 All buildings shall be insulated in accordance with the following:  ceiling or roof -- R-38; exterior wall-- R-15.5; floor above unheated area or crawl space and ducts shall have a value of R-19 for the assembly; finished exterior basement walls and interior garage walls shall have insulating batts, blankets, fills or similar types of materials with a value of R-13.  

Exception # 2   Joints in the building conditioned envelope that are sources of air leakage, such as around window and door frames, between wall cavities and window or door frames, between wall assemblies or their sill plates and foundations, between utility service penetrations through the building envelope, shall be properly sealed with compatible and durable caulking, gasketing, weatherstripping or other materials in an approved manner.

Exception # 3: Exception #3:   All exterior walls shall have a vapor barrier, capable of reducing vapor transmission to less than 1 perm, installed on the inside or the warm surface side of the insulated wall or ceiling.  Only those ceilings that are attached directly to the underside of the roof rafters, such as flat roofs or cathedral ceilings, are required to install the vapor barrier.

Exception #4:  Ducts in heated areas.

Exception #5:  Ducts in unheated areas and not exposed to outside ventilation, such as a garage, shall have an insulation value of R-4.

Exception #6:  All windows shall have a maximum Thermal Transmittance (U) value of 0.55.

P2602.1.1 Individual water supply. Where a potable public water supply is not available, individual sources of potable water supply shall be utilized.

P2602.1.2 Availability.  A potable public water supply system shall be considered available to a building when the nearest property line is located within two hundred twenty-five (225) feet of the public water main.

P2603.2.1 Protection against physical damage: Delete

P2603.6  Freezing: A water, soil or waste pipe shall not be installed outside of a building, or concealed in outside walls or in any place subjected to freezing temperature, unless adequate provision is made to protect such pipe from freezing by insulation or heat or both.  Water pipes shall not be installed in an exterior wall cavity in one and two family dwellings.  For purposes of this section exterior wall cavity shall mean all walls that rain can fall upon.  Water service piping shall be installed below recorded frost penetration but not less than thirty (30) inches below grade.

P2603.7 Sewer depth:  Building sewers that connect to private sewage disposal systems shall be a minimum of thirty (30) inches below finished grade at the point of septic tank connection. Building sewers shall be a minimum of thirty (30) inches below grade.

P2604.3 Backfilling: Delete last sentence from section which reads, “ Loose earth shall be carefully placed in the trench in 6-inch (152 mm) layers and tamped in place.”

P2903.5 Water hammer: Delete

P3003.3.6.1 Solvent cementing.  Joint surfaces shall be clean and free from moisture.  A primer that conforms to ASTM F 656 shall be applied.  Solvent cement not purple in color and conforming to ASTM D 2564, CSA CAN/CSAB137.3, CSA CAN/CSAB181.2 or CSA CAN/CSAB182.1 shall be applied to all joint surfaces.  The joint shall be made while the cement is wet and shall be in accordance with ASTM D 2855. Solventcement joints shall be applied to all joint surfaces.  The joint shall be permitted above or below ground.

P3008.1 General: Deleted

P3114.6.1 Air admittance valve maximum load limitations for horizontal fixture branches

                                                     FIXTURE BRANCH

    1 1/4                                                 1
    1 1/2                                                 3
    2                                                     6
    3                                                     20*
    4                                                     160
* Not more than two water closets or bathroom groups per interval.

E3508.1.1: Add: Exception: When a concrete-encased electrode and/or a ground ring are available for  use in a grounding electrode system a made or other electrode as specified in E3508.2 can be used as a  substitute.  The second made electrode shall not be connected in series with the first made electrode.

E3509.6.1 Water Heater Jumper: The interior metal water piping bonding shall include a bonding jumper between the hot and cold waterlines at the water heater fixture.  

E3509.7 Metal gas piping bonding: Delete

AG105.2  Outdoor swimming pool: An outdoor swimming pool, including an in-ground, aboveground or on-ground pool, hot tub or spa shall be provided with a barrier which shall comply with the following:

    1.    The top of the barrier shall be at least seventy-two (72) inches (1836 mm) above finished ground level measured on the side of the barrier which faces away from the swimming pool. The maximum vertical clearance between finished ground level and the barrier shall be two (2) inches (51 mm) measured on the side of the barrier which faces away from the swimming pool. Where the top of the pool structure is above grade, such as an aboveground pool, the barrier may be at ground level, such as the pool structure, or mounted on top of the pool structure. Where the barrier is mounted on top of the pool structure, the maximum vertical clearance between the top of the pool structure and the bottom of the barrier shall be four (4) inches (102 mm).

        Exception: The top of the barrier shall be at least forty-eight (48) inches (1219 mm) above ground level measured on the side of the barrier which faces away from the swimming pool provided the swimming pool is equipped with a rigid safety cover.

2 through 10. Same as International Residential Code.

(Ord. No. 14119 § 1, 7-5-94; Ord. No. 15397, § 1, 10-20-97; Ord. No. 15629, § 1, 6-1-98; Ord. No. 17501, § 1, 11-4-02)