Series 106 2005 ORDINANCES/RESOLUTIONS
Section 106-485; Withdrawn B205-05; Repealing Article VI of Chapter 6 of the City Code and enacting in lieu thereof a new Article VI adopting the 2003 Edition of the International Residential Code for One- and Two-Family Dwellings
Bill No. B 205-05
repealing Article VI of Chapter 6 of the City Code relating to the 2000 Edition of the
International Residential Code for One- and Two-Family Dwellings and enacting in lieu thereof a
new Article VI adopting the 2003 Edition of the International Residential Code for One- and
Two-Family Dwellings; and fixing the time when this ordinance shall become effective.
BE IT ORDAINED BY THE COUNCIL OF THE CITY OF COLUMBIA, MISSOURI, AS
SECTION 1. Article VI of Chapter 6 of
the Code of Ordinances, City of Columbia,
Missouri, relating to the 2000 Edition of the International Residential Code for One- and Two-Family
Dwellings is hereby repealed and in lieu thereof a new Article VI, relating to the 2003
Edition of the International Residential Code for One- and Two-Family Dwellings, is hereby
enacted reading in words and figures as follows:
CHAPTER 6. BUILDINGS AND BUILDING REGULATIONS
. . .
Article VI. ONE AND TWO FAMILY DWELLING CODE
Sec. 6-65. Adopted.
The 2003 Edition of the International Residential Code for One-
and Two-Family Dwellings,
published by The International Code Council, Inc., including Appendices E, F, I and J, three
copies of which have been on file with the city clerk for a period of ninety (90) days prior to the
adoption of this article, is hereby adopted by reference and made a part of the Code of
Ordinances, City of Columbia, Missouri as fully as if set forth in its entirety. At least three
copies of the 2003 Edition of the International Residential Code for One- and Two-Family
Dwellings shall remain on file in the office of the city clerk and shall be kept available for public
use, inspection and examination.
Sec. 6-66. Amendments.
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
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
R103.1 Creation of enforcement agency: (Delete)
R103.2 General: The building official is hereby authorized and directed to administer
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
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 into Table R301.2(1):
Roof Snow Load - 20; Wind - 90; Seismic Design Category - 1; Weathering - Yes,
Line Depth - Yes, 30 inches; Termite - Moderate to Heavy; Decay - Slight to Moderate; Winter
Design Temp - +4 Degrees F; Ice Shield - No; Flood Hazards - Yes, as required by the Zoning
Regulations; air Freezing- NA: Mean Annual Temperature - NA
R307.3 Water Closet: All water closets shall be space fifteen (15) inches from the centerline
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
R311.5.3 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 treads 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 (9.5 mm).
R3220.127.116.11 & R318.104.22.168 (Delete)
R311.5.8 Winders: Winders are permitted; provided that the width
of the tread at a point not
more than 12 inches (305 mm) 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.
R322.214.171.124 Circular stairways: Circular stairways shall have a minimum tread
depth and a
maximum riser height in accordance with Section 311.5.3 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.
R313.2 Power source: In new construction, required smoke detectors shall receive
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.
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
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,
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,
weather-stripping or other materials in an approved manner.
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
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,
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
this section exterior wall cavity shall mean all walls that rain can fall upon. Water service
shall be installed below recorded frost penetration but not less than thirty (30) inches below
P2603.7 Sewer depth: Building sewers that connect to private sewage disposal systems
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
carefully placed in the trench in 6-inch (152 mm) layers and tamped in place.
P2903.5 Water hammer: Delete
P3008.1 General: Delete
E3508.1.1 Exception: When a concrete-encased electrode and/or a ground ring are available
use in 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
E3509.6.1 Water Heater Jumper: The interior metal water piping bonding shall include
jumper between the hot and cold waterlines at the water heater fixture.
E3509.7 Bonding other metal piping: Delete
SECTION 2. The repeal of Article VI of
Chapter 6 of the Code of Ordinances, City of
Columbia, Missouri relating to the 2000 Edition of the International Residential Code for One-
and Two-Family Dwellings shall not affect any offense or act committed or done or any penalty
or forfeiture incurred before the effective date of this ordinance.
SECTION 3. This ordinance shall be in
full force and effect from and after September 1,
WITHDRAWN this 6th day of September, 2005.