Updated : 04/22/2024

Overview

Rapid City, SD, adopted the 2018 IBC (appendices B, C, I , J) and IRC (appendices E, H, K) with amendments. Rapid City, SD, Municipal Code § 15.12.010 (adopt IBC with amendments), § 15.13.010 (adopted IRC with amendments).

Helpful resources for Rapid City, South Dakota include the following.

• PLRB, Ordinance and Law Coverage Discussion for South Dakota

Residential Building Code

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

Rapid City adopted the 2018 IRC, statewide. 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 Rapid City ? Yes
Citation: 15.13.070 IRC Chapter 3, Table R301.2(1) Climatic and geographic design criteria–Amended.
Municipal Code https://codelibrary.amlegal.com/codes/rapidcity/latest/rapidcity_sd/0-0-0-82713
Comments:

TABLE 100-B CLIMATIC AND GEOGRAPHIC DESIGN CRITERIA

Ground Snow Level	Wind Speed	Seismic Design Category	Subject to Damage From			Winter Design Tempe rature	Ice Barrier Underlayment Required	Flood Hazards	Air Freezing Index	Mean Annual Temp
			Weathering	Frost Line Depth	Termite
42 psf1	115 2	footnote 3	Moderate	42"	None to slight	-7	yes	June 3, 2013 with revisions	1548	48°F
1 The ground snow load for Rapid city shall be 42 psf and as per ASCE 710. 2 Wind loads shall be in accordance with Chapters 26 to 30 of ASCE7-10 and shall be based upon the Occupancy Category of the building under design. Buildings shall at a minimum be designed to Occupancy Category II having an ultimate wind speed velocity of 115 mph. 3 Seismic loads shall be in accordance with Section 1613 of IBC 2018 and ASCE 7-10. In the absence of specific site information, the building shall be designed in accordance with the following: Short Period Acceleration (Ss) = 0.125g 1-Second Period Acceleration (S1) = 0.043g Site Class = D

Comments

Rapid City, SD, adopted the 2018 IRC with amendments. Rapid City, SD, Municipal Code § 15.13.010 (adopted IRC with amendments).

 

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.

Existing building requirements would include those stated in the 2018 IRC and the adopted 2018 IPMC. Rapid City, SD, Municipal Code § 15.14.010 (adopted IPMC with amendments).

Commercial Building Code

Rapid City adopted the 2018 IBC, statewide. 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

Rapid City, SD, adopted the 2018 IBC (appendices B, C, I , J) with amendments. Rapid City, SD, Municipal Code § 15.12.010 (adopt IBC with amendments).

Existing Buildings

Existing building requirements would include those stated in the IEBC and the adopted 2018 IPMC. Rapid City, SD, Municipal Code § 15.12.070 (refernce to IEBC), § 15.14.010 (adopted IPMC with amendments).

Other Building Codes