City of Weston, MO Residential Code

[Ord. No. 11.009 §1, 11-9-2016]

The International Residential Building Code®, 2012 Edition, as published by the International Code Council, Inc., including:

Appendix F: Radon Control Methods.

Appendix G: Swimming Pools, Spas, and Hot Tubs.

Appendix H: Patio Covers.

is hereby enacted and made part of this Section by reference except as to portions hereinafter specifically deleted, clarified or amended.

If any conflict should exist between the International Residential Building Code and the Zoning Regulations Code of the City of Weston, Missouri, the provisions of the Zoning Regulations Code shall control. If any conflict should exist between the International Residential Building Code and any other ordinance of the City of Weston, Missouri, the International Residential Building Code provisions shall control and the portion of the ordinance in conflict with the International Residential Building Code provision shall be repealed. Such repeal will affect only that portion of any ordinance which is in conflict with the International Residential Building Code and shall not affect any other portions of the ordinance.

The following changes shall be made in the International Residential Building Code:

Amend Subsection R101.1, "Title" by adding the following: "City of Weston, Missouri".

Amend Subsection R105.2, "Work Exempt" from permit by deleting item 10 and replacing it with the following: "Replacement of roof coverings and exterior wall coverings on structures governed by this code."

Amend Subsection R106.1, "Submittal Documents" by deleting the following: ". . . where required by the statutes of the jurisdiction in which the project is to be constructed."

Delete Subsection 108.5, "Refunds" in its entirety.

Amend Section R111, "Service Utilities" by adding a new Subsection to read as follows: "111.4 Demolition Permits. Confirmation Letters by Utility Purveyors acknowledging the termination of electric, gas and water services shall be required as a prerequisite to approval for demolition permits unless otherwise approved for immediate re-use."

Delete Section R112, "Board of Appeals" in its entirety.

Amend Table R301.2(1), "Climatic and Geographic Design Criteria" to include the following:

Ground snow load = 20 psf.

Wind speed = 90 mph.

Topographic effects = NO.

Seismic design = A.

Weathering = Severe.

Frost depth = 36 inches.

Termite = Yes.

Winter temp = 6 degrees F.

Ice barrier = YES.

Flood hazards = 1987.

Air freezing = 950 index rating.

Mean temp = 55 degrees F.

Amend Table R302.6, "Dwelling/Garage Separation" to read as follows under ALL Material categories: "Not less than five-eighths (5/8) inch Type X gypsum board or equivalent."

Delete Section R313, "Automatic Fire Sprinkler Systems" and replace with the following:

"Per Missouri Revised Statutes Section 67.281.1 A builder of one- or two-family dwellings or townhouses shall offer to any purchaser on or before the time of entering into the purchase contract the option, at the purchaser's cost, to install or equip fire sprinklers in the dwelling or townhouse. Notwithstanding any other provision of law to the contrary, no purchaser of such a one- or two-family dwelling or townhouse shall be denied the right to choose or decline to install a fire sprinkler system in such dwelling or townhouse being purchased by any code, ordinance, rule, regulation, order, or resolution by any county or other political subdivision. Any county or other political subdivision shall provide in any such code, ordinance, rule, regulation, order, or resolution the mandatory option for purchasers to have the right to choose and the requirement that builders offer to purchasers the option to purchase fire sprinklers in connection with the purchase of any one- or two-family dwelling or townhouse. The provisions of this Section shall expire on December 31, 2019; and 67.281.2 Any governing body of any political subdivision that adopts the 2009 International Residential Code for One- and Two- Family Dwellings or a subsequent Edition of such code without mandated automatic fire sprinkler systems in Section R313 of such code shall retain the language in Section R317 of the 2006 International Residential Code for One- and Two- Family Dwellings (R317.1) and Townhomes (R317.2)."

"Section R317 Dwelling Unit Separation

R317.1 Two-family dwellings. Dwelling units in two-family dwellings shall be separated from each other by wall and/or floor assemblies having not less than 1-hour fire-resistance rating when tested in accordance with ASTM E 119. Fire-resistance-rated floor-ceiling and wall assemblies shall extend to and be tight against the exterior wall, and wall assemblies shall extend to the underside of the roof sheathing.

Exceptions:

1. A fire-resistance rating of one-half (1/2) hour shall be permitted in buildings equipped throughout with an automatic sprinkler system installed in accordance with NFPA 13.

2. Wall assemblies need not extend through attic spaces when the ceiling is protected by not less than five-eighths (5/8) inch (15.9 mm) Type X gypsum board and an attic draft stop constructed as specified in Section R502.12.1 is provided above and along the wall assembly separating the dwellings. The structural framing supporting the ceiling shall also be protected by not less than one-half (1/2) inch (12.7 mm) gypsum board or equivalent.

R317.1.1 Supporting construction. When floor assemblies are required to be fire-resistance-rated by Section R317.1, the supporting construction of such assemblies shall have an equal or greater fire-resistive rating.

R317.2 Townhouses. Each townhouse shall be considered a separate building and shall be separated by fire-resistance-rated wall assemblies meeting the requirements of Section R302 for exterior walls.

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 or vents in the cavity of the common wall. Electrical installations shall be installed in accordance with Chapters 33 through 42. Penetrations of electrical outlet boxes shall be in accordance with Section R317.3.

R317.2.1 Continuity. The fire-resistance-rated wall or assembly separating townhouses shall be continuous from the foundation to the underside of the roof sheathing, deck or slab. The fire-resistance rating shall extend the full length of the wall or assembly, including wall extensions through and separating attached enclosed accessory structures."

10.

Amend Subsection R602.6.1, "Drilling and Notching of Top Plate" by deleting "eight 10d" and replacing with "four 10d."

11.

Delete Chapter 11, "Energy Efficiency" in its entirety and replace with "2009 International Energy Conservation Code."

12.

Amend Subsection E3902.2, "Garage and Accessory Building Receptacles" by adding the following: "Exception: a dedicated receptacle supplying a garage door opener or a single outlet dedicated receptacle supplying a specific appliance."

13.

Amend Subsection E3902.5, "Unfinished Basement Receptacles" by adding a second exception to read as follows: "Exception 2. A single dedicated receptacle supplying a sump pump or appliance."

14.

Amend Subsection E3902.12, "Arc-fault Circuit-Interrupter Protection" by deleting all rooms listed except for "bedrooms."

15.

Delete Subsection E4002.14, "Tamper-resistant Receptacles" in its entirety.

16.

The Board of Aldermen is authorized to wave the submission of construction documents by a registered design professional upon good cause shown.