Updated : 04/22/2024

Overview

Grimes, IA has adopted the 2015 International Codes, with amendments, including the 2015 IRC and IBC. Grimes, IA Muni. Codes § 156.01 (IRC adoption), § 156.02 (IRC amendments), § 160.01 (IBC adoption) and § 160.02 (IBC amendments).

Helpful resources for Grimes, Iowa include the following.

• PLRB, Ordinance and Law Coverage Discussion for Iowa

Residential Building Code

Iowa adopted a model state residential code but it is not in force unless adopted locally.See PLRB, Iowa Building Codes for more information on state level codes.

Grimes 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: yes

Ice Barrier

Are ice barriers required for Grimes ? Yes
Citation: § 160.08
Municipal Code https://www.grimesiowa.gov/Portals/0/pages/ordinances/04-24-19%20Complete%20Code.pdf#page=543
Comments:

TABLE R301.2(1) CLIMATE AND GEOGRAPHICAL CRITERIA

Ground Snow Load: 30 PSF

Wind Design: Speed MPH – 90, Topograph effects – NO

Seismic Design Category: A

Subject to Damage From: Weathering – Severe, Frost Line Depth – 42", Termite – Mod/Heavy

Winter Design Temp: -5F

Ice Barrier Req'd: Yes

Flood Hazards: NFIP Acceptance Zone C – 30-Sep-83 – No local amendments.

Air Freezing Index: 1833

Mean Annual Temp: 48.6

Government Officials

Comments

Delete Section R313; refer to Grimes Ordinance Chapter 154 Fire Code § 903. Grimes, IA Muni. Code § 156.02, 

Commercial Building Code

Grimes 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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Existing Buildings

Grimes, IA did not adopt the IEBC, therefore Chapter 34 of the IBC would apply.

Other Building Codes