Adopted Building Codes for Douglas County Building Division

Code Changes Effective April 1, 2009

• 2006 International Building Code
• 2006 International Residential Code
• 2006 International Plumbing Code
• 2006 International Mechanical Code
• 2006 International Fuel Gas Code
• 2006 International Energy Conservation Code
• 2008 National Electrical Code.

2006 IECC Compliance and Design Criteria for Homes in Douglas County

New residential; construction, additions, alterations, renovations or repairs shall comply with one of the following three paths for energy conservation:

• Prescriptive
• Alternative
• Performance

A permanent certificate provided by the builder, shall be posted in the room where the mechanical equipment is housed. The certificate shall list the R-values of  insulation used in the walls, ceiling, floor, foundation and ducts along with the U-factors of the windows. The certificate shall list the type and efficiency of the heating, cooling and service water heating equipment installed.

Design Criteria for Climate Zone 5B »

Obtain additional detailed information about ResCheck and ComCheck analysis and Energy Codes from the US Department of Energy

Colorado Office of Energy Management and Conservation has a great website with short videos that explain energy compliant materials and practices. Energy Compliance and Practices

**All International Code Books can be purchased at any major bookstore, online at the International Code Council website or viewed at your local library.**

Design Criteria for Douglas County Building Division

• Basic Wind Speeds:  3 second gust of 105 mph exposure C
  
  
• Seismic:
  
  

  (IRC) Site Class - B

  (IBC) Ss = 0.20 to 0.24 (IBC) S1 = 0.06

• Foundation Standard: ACI 318

Foundation walls over four feet in height shall have deformed bars not smaller than No. 4 in size with a specified yield strength of not less than 60,000 psi placed both vertically and horizontally with a maximum spacing of 18 inches.

Foundation walls four feet in height or less shall have two horizontal deformed bars both top and bottom as specified in the following paragraph.

All walls shall have two bars not smaller than No. 5 in size with a specified yield strength of not less than 60,000 psi placed horizontally at the top and bottom of the wall.

Frost Depth: Minimum 36 inches below finished grade

Snow Loads are determined according to elevation:

* Ground Snow Load = Roof Snow Load, reductions for Snow Loads are not allowed.