Updated : 04/22/2024

Overview

The city of O'Fallon, Mo. adopted the following codes:

• The International Building Code, 2015 edition. O'Fallon, Mo. Muni. Code, § 500.010 (adopted) with amendments at § 500.020.
• The International Residential Code, 2015 edition. O'Fallon, Mo. Muni. Code, § 500.330 (adopted) with amendments at § 500.340.
• The International Property Maintenance Code, 2015 edition. O'Fallon, Mo. Muni. Code, § 500.060 (adopted) with amendments at § 500.070.

Helpful resources for O’Fallon, Missouri include the following.

• PLRB, Ordinance and Law Coverage Discussion for Missouri

Residential Building Code

Missouri has yet to adopt a statewide residential code. Local laws will control.See PLRB, Missouri Building Codes for more information on state level codes.

O’Fallon adopted the 2015 IRC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the model code here.

You can find information about amendments to the model code here.

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Drip Edge

Drip Edge: no

Ice Barrier

Are ice barriers required for O’Fallon ? No
Citation: Table 301.2
Municipal Code https://ecode360.com/27597508#page=
Comments:

 

(CHAPTER 3 BUILDING PLANNING)

(SECTION R301 DESIGN CRITERIA)

TABLE R301.2(1)
CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA
GROUND SNOW LOAD		20 PSF
WIND DESIGN	Speed (MPH)	115 MPH
	Topographic effects	No
	Special wind region	No
	Wind-borne debris zone	No
SEISMIC DESIGN CATEGORY		SDC C
SUBJECT TO DAMAGE FROM	Weathering	Severe
	Frost line depth	30 inches
	Termite	Moderate to Heavy
WINTER DESIGN TEMP		6° F.
ICE BARRIER UNDERLAYMENT REQUIRED		No
FLOOD HAZARDS		(See Floodplain Administrator)
AIR FREEZING INDEX		1000
MEAN ANNUAL TEMP		55.2° F.

Comments

The city of O'Fallon, Mo. adopted the International Residential Code, 2015 edition, including appendicesE, G, H, I, J, K, and  P. O'Fallon, Mo. Muni. Code, § 500.330 (adopted) with amendments at § 500.340.

Existing Buildings

Existing buildings, meaning buildings that were built in accordance to code at the time of construction, typically merit extra consideration in a current updated code.

The International Property Maintenance Code, 2015 edition, including appendix A. O'Fallon, Mo. Muni. Code, § 500.060 (adopted) with amendments at § 500.070.

Commercial Building Code

O’Fallon adopted the 2015 IBC, locally. Note that adoptions usually come with amendments. So, it is important to review those amendments in addition to the unamended model code.

You can find a copy of the code here.You can find information about amendments to the model code here.

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Comments

The city of O'Fallon, Mo. adopted International Building Code, 2015 edition, including appendices C, F, I and K. O'Fallon, Mo. Muni. Code, § 500.010 (adopted) with amendments at § 500.020.

Existing Buildings

The International Property Maintenance Code, 2015 edition. O'Fallon, Mo. Muni. Code, § 500.060 (adopted) with amendments at § 500.070.
Chapter 34 of the 2015 IBC applies.

Other Building Codes