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Codes and Standards
New! 2018 International Codes
Effective: January 12, 2019
All construction within the City of Fort Collins shall comply with following codes adopted by City Council, January 12, 2019:
Structural Design Criteria for Fort Collins
- Snow Load - Live Load: 30 PSF / Ground Snow Load 30 PSF
- Frost Depth 30 inches
- Seismic Design Category B
- Basic Wind Speed:
-
Risk Category ll (most structures):
- 140mph (Ultimate) exposure B or
- Front Range Gust Map (ASCE 7-10 compatible published by The Structural Engineer's Association of Colorado, dated 10/18/2013)
- Risk Category l: 130mph (Ultimate) exposure B
- Risk Category lll & lV: 150mph (Ultimate) exposure B
-
Risk Category ll (most structures):
List Adopted codes with Local Amendments
- 2018 International Building Code with local amendments
- 2018 International Residential Code with local amendments
- 2018 International Energy Conservation Code with local amendments
- 2018 International Mechanical Code with local amendments
- 2018 International Fuel Gas Code with local amendments
- 2018 International Swimming Pool and Spa Code with local amendments
- 2018 International Existing Building Code with local amendments
- 2015 International Plumbing Code (State Adoption) with local amendments
- 2017 National Electrical Code (effective July 3, 2017)
- 2006 International Property Maintenance Code with local amendments
- 2017 ICC A117.1 (accessibility code)
- Accessibility State Law: CRS 9-5 (use with 2017 ICC-A117.1)
2019 Contractor Code Amendment Training - Video
New! 2018 Energy Codes
Commercial (Including multi-family buildings 4 stories and taller)
2018 IECC and local amendments – use Commercial Provisions.
- Prescriptive Method
- UA Comcheck calculated using 2018 IECC
Multi-family (Apartments & Condos 3 stories and less)
2018 IECC and local amendments– use Residential Provisions. Air tightness protocol
- Prescriptive Method
- Total UA Alternative (REScheck) calculated using 2018 IECC
- SPA (Simulated Performance Alternative) Residential New Construction SPA Guide
- ERI (Energy Rating Index)
Duplex and Single Family Residence
2018 IRC, Chapter 11 and local amendments
- Prescriptive Method
- Total UA Alternative (REScheck) calculated using 2018 IECC
- SPA (Simulated Performance Alternative) Residential New Construction SPA Guide
- ERI (Energy Rating Index)
Reference for projects submitted under the 2015 I-Codes
Structural Design Criteria for Fort Collins
- Snow Load - Live Load: 30 PSF / Ground Snow Load 30 PSF
- Frost Depth 30 inches
- Wind Load: 129 mph Vult, or 100 mph Vasd - Exposure B
- Seismic Design Category B
List Adopted codes with Local Amendments
- 2015 International Building Code with local Amendments
- 2015 International Residential Code with local Amendments
- 2015 International Energy Conservation Code with local Amendments
- 2015 International Mechanical Code with local Amendments
- 2015 International Fuel Gas Code with local Amendments
- 2015 International Plumbing Code
- 2017 National Electrical Code (effective July 3, 2017)
- 2006 International Property Maintenance Code with local Amendments
- 2017 ICC A117.1 (accessibility)
- Accessibility: State Law CRS 9-5 and ICC A117.1-2017