8 Colo. Code Regs. § 1302-14-2
Pursuant to sections 24-32-3303(1), 24-32-3304(1)(a) and (b), and section 24-32-3305(2), C.R.S., the State Housing Board hereby adopts and incorporates by reference the following nationally recognized codes, standards, guidelines, procedures, or rules in their entirety, except for the revisions, additions, deletions, or exceptions/exemptions specified below. The incorporated codes, standards, guidelines, procedures, or rules do not include later revisions. They are readily available for public inspection in written format during the regular business hours at the Division of Housing, Building Codes and Standards Section, 1313 Sherman Street, Suite 320, Denver, CO 80203. Paper copies are available for a reasonable fee paid to the Division of Housing. Electronic copies are available from the agencies originally issuing them as noted below. In the case of a conflict between an adopted code, standard, procedure, or rules, the program will review and provide written guidance.
Building Codes for Factory-Built Residential Structures and Tiny Homes; Factory-Built Nonresidential Structures; and Site-Built Hotels, Motels, and Multi-Family Structures in those areas of the State where no Standards Exist
Manufacturers are permitted to use the construction codes in effect prior to the adoption of any new code for a maximum of 180 days after the amendment in rule takes effect. The Program Manager for the Building Codes & Standards Section, the Director of the Office of Regulatory Oversight, the Deputy Division Director, or the Division Director is authorized to grant, in writing, one extension, for a period not more than 180 days.
Revise #1 within "Building" to:
- Do not exceed 120 sq. ft.
- Are not connected to a permanent utility (power, sewer, fuel-gas)
- Are not classified as an electrical hazardous area per Article 500 of the NEC (is a nonhazardous area), and
- Are not installed on a permanent foundation.
A building that in its entirety operates as a listed product is automatically exempt as long as the manufacturer is able to demonstrate it is labeled as such.
A building component, assembly, or system constructed in the factory as open construction (see definitions).
The above exemptions from approval through the State factory-built program do not grant any exemption from local jurisdiction requirements or state electrical or plumbing requirements. The above exemptions do not grant authorization for any work to be done in a manner that is in violation of the provisions of the adopted codes.
Add the following new section:
An automatic fire sprinkler system shall be installed in buildings as required by the local jurisdiction where the structure will be set. Final tests required by this Section shall be approved by a certified inspector
Revise "immediate vicinity" to read "within 15 feet".
Add to the end of the paragraph the following:
Smoke and/or carbon monoxide alarms shall not be installed on a circuit dedicated only for smoke and/or carbon monoxide alarms.
Revise "immediate vicinity" to read "within 15 feet".
Add to the end of the paragraph the following:
Smoke and/or carbon monoxide alarms shall not be installed on a circuit dedicated only for smoke and/or carbon monoxide alarms.
Delete in its entirety.
Add the following sentence at the beginning:
Due to a history of ice forming along the eaves in Colorado, an ice barrier is required.
And add the following language at the end of the first sentence:
...or not fewer than two layers of underlayment cemented together and to the roof.
Revise to read as follows:
Roof Snow Load (Pf) shall be in accordance with the local jurisdiction requirements and shall not be less than a minimum roof snow load of 30 PSF. The allowable increase of snow duration shall not be used when the snow load is above 65 PSF.
Add this new section with the following language:
The 3 second gust basic wind speed shall be in accordance with the local jurisdiction requirements. For jurisdictions that have adopted a building code edition prior to the 2012, the basic wind speed of that jurisdiction shall be multiplied by 1.20 for Risk category I structures, 1.29 for Risk category II structures, and 1.38 for Risk category III and IV structures to obtain Vult. The design wind speed Vult shall not be less than the minimum basic wind speeds as follows (Risk category as determined by Table 1604.5):
Risk category I structures - 105 MPH
Risk category II structures - 115 MPH
Risk category III and IV structures - 120 MPH
The Exposure category shall be C, unless otherwise justified.
Add this new section with the following language:
Every new fireplace must comply with one of the following:
Revise #1 within "Building to:
- Any structures that are one story in height and utilized for the storage of equipment or materials that:
- Do not exceed 200 sq. ft.,
- Are not connected to a permanent utility (power, sewer, fuel-gas)
- Are not classified as an electrical hazardous area per Article 500 of the NEC (is a nonhazardous area), and
- Are not installed on a permanent foundation.
Listed Structures
A building that in its entirety operates as a listed product is automatically exempt as long as the manufacturer is able to demonstrate it is labeled as such.
Open Panel Construction
A building component, assembly, or system constructed in the factory as open construction (see definitions).
The above exemptions from approval through the State factory-built program do not grant any exemption from local jurisdiction requirements or state electrical or plumbing requirements. The above exemptions do not grant authorization for any work to be done in a manner that is in violation of the provisions of the adopted codes.
Revise as follows:
Climatic or Geographic Design Criteria for IRC Dwellings (Risk Category II Structures) | Division of Housing Minimum |
Roof Snow load(1) | 30 psf, non-reducible |
Basic Wind Speed(1) | 115 mph (Vult), Exposure C |
Wind Topographic Effects | Per Local |
Seismic Design Category(1) | Minimum B |
Weathering | Severe |
Frost Line Depth(4) | Per Local |
Termite Damage | Slight |
Winter Design Temperature(2) | Per Local |
Ice Barrier Underlayment Requirement | Yes |
Flood Hazards | Per Local |
Air Freezing Index(3) | Per Local |
Mean Annual Temperature(3) | Per Local |
Wildfire Risk | Per Local |
Radon Mitigation | Per Local |
ADU Fire Separation | Per Local |
Add footnote (j) to Decks, Porches, Exterior balconies, Fire escapes to read as follows:
Delete footnote (b).
Delete footnote (c).
Revise to include the following sentence as an exception:
Revise to increase to less than 60 inches (1524 mm) above the landing.
Add a second sentence that reads as follows:
Cape Cod style attics that qualify as a story shall require one operable emergency and escape opening.
Add the following sentence to the end of the Exception:
The device must remain fixed in position when used in these areas.
Delete this section and replace it with the following:
An automatic fire sprinkler system shall be installed in one and two family dwellings and townhouses as required by the local jurisdiction where the home will be set. In-plant and final tests required by this Section shall be approved by a certified inspector.
Revise "immediate vicinity" to read "within 15 feet".
Add to the end of the paragraph the following:
Smoke and/or carbon monoxide alarms shall not be installed on a circuit dedicated only for smoke and/or carbon monoxide alarms.
Revise "immediate vicinity" to read "within 15 feet".
Add to the end of the paragraph the following:
Smoke and/or carbon monoxide alarms shall not be installed on a circuit dedicated only for smoke and/or carbon monoxide alarms.
Add the following new section:
Section R802.10.5 Marking
Each truss shall be legibly branded, marked, or shall have other permanent labeling of the truss drawing's designated identification number on the large face of the top chord and within two (2) feet of the peak of the truss.
Revise to read as follows:
Due to a history of ice forming along eaves in Colorado, an ice barrier is required. The ice barrier shall consist of a self-adhering polymer-modified bitumen sheet and shall extend from the eave's edge to a point at least 24" inside the exterior wall line of the building or of not fewer than two layers of underlayment cemented together and to the roof.
Delete all and replace with the following:
Unvented fuel fired room heaters and unvented fuel fired fireplaces are prohibited.
Section R1001.1and R1004.1 - Fireplaces
Every new fireplace must comply with one of the following:
Delete the words "other than plastic" in the sentence for water and air testing.
Delete in its entirety.
Add the following sentence:
All rooms or spaces containing boilers shall be provided with a floor drain and trap primer.
Revise to read as follows:
The test pressure to be used shall not be less than 1 1/2 times the proposed maximum working pressure, but not less than 10 psig (69 kPa gauge) for a period of not less than 15 minutes. Where the test pressure exceeds 125 psig (862 kPa gauge), the test pressure shall not exceed a value that produces a hoop stress in the piping greater than 50 percent of the specified minimum yield strength of the pipe. The test pressure for valves and connections to appliances shall not exceed 0.5 psig (3kPa).
Delete Chapters 34 through 43.
Adopted.
Adopted.
Add the following new section:
LPG appliances shall not be installed in a pit, basement, or crawl space where unburned fuel may accumulate unless an approved sensing device is installed in conjunction with an automatic shutoff valve located where the gas enters the structure only for retro-fitting of existing structures or as required by the local jurisdiction.
Add the following additional sentence:
Every new installation of a solid fuel-burning, vented decorative appliance or room heater shall meet the most stringent emission standards for wood stoves established under State statute and/or regulations promulgated by the State Air Quality Control Commission as of the time of installation of the appliance or room heater. (Effective January 1, 1991 - CC90-617).
Delete this section in its entirety.
A transition period of 180 days after the effective date applies. The Program Manager for the Building Codes and Standards Section is authorized to grant, in writing, one extension, for a period not more than 180 days.
Any conflicts that may arise between these amendments and a future State adopted edition of the IPC shall be resolved by applying the specific amended provisions of the 2021 edition. The following amendments are made to the NEC for use with all factory-built units:
Delete the words "Plastic Piping shall not be tested by using air".
A transition period of 180 days after the effective date applies. The Program Manager for the Building Codes and Standards Section is authorized to grant, in writing, one extension, for a period not more than 180 days.
Any conflicts that may arise between these amendments and a future State adopted edition of the NEC shall be resolved by applying the specific amended provisions of the 2020 edition. The following amendments are made to the NEC for use with all factory-built units:
Add the following exception to the end: Space directly below the island and peninsular countertop and work surfaces are not considered wall space.
Add the following sentence to the end: "Receptacle outlets, other than those installed per 210.52(C)(3) shall not be installed in the space directly below the island or peninsular countertop or work surface.
Add the following new section:
These tests shall be performed after branch circuits are complete and after wiring devices are installed and wiring properly terminated.
Add the following new sentence at the end:
Substantial guard strips or other protection shall be provided to protect wiring within three (3) feet of the marriage line where the attic is exposed and the roof is completed on-site, such as a hinged roof.
Add the following to the existing exception:
...than those covered in 210.8(C), and outlets designated for outdoor mechanical cooling equipment.
This exception is limited to outdoor mechanical cooling equipment shipped loose by the manufacturer with the factory-built structure to be completed on-site. This exemption does not apply if the outdoor mechanical cooling equipment is provided by any other party. If it is provided by a party that is not the manufacturer of the factory-built structure, then the State Electrical Board's requirement applies.
Add the following:
LPG appliances shall not be installed in a pit, basement, or crawl space where unburned fuel may accumulate unless an approved sensing device is installed in conjunction with an automatic shutoff valve located where the gas enters the structure only for retro-fitting of existing structures or as required by the local jurisdiction.
Delete all and replace with the following:
Unvented fuel fired room heaters and unvented fuel fired fireplaces are prohibited.
Revise to read as follows:
The test pressure to be used shall not be less than 1 1/2 times the proposed maximum working pressure, but not less than 10 psig (69 kPa gauge), irrespective of design pressure. Where the test pressure exceeds 125 psig (862 kPa gauge), the test pressure shall not exceed a value that produces a hoop stress in the piping greater than 50 percent of the specified minimum yield strength of the pipe. The test pressure for valves and connections to appliances shall not exceed 0.5 psig (3kPa).
Add the following requirement:
All air barrier elements shall be installed as detailed in Table 402.4.1.1. and are inspected and verified with a checklist incorporated into the Quality Assurance Inspection Checklist and part of the "finished home" file for the building/dwelling. All elements of the air barrier shall be listed and installed per the manufacturer's installation instructions. A completed air barrier checklist shall be kept on file with the Division of Housing and the manufacturer's quality assurance program.
Construction Standards and Procedures for U.S. Housing and Urban Development (HUD) Homes
These standards and procedures are available through HUD at:https://www.hud.gov.
Pursuant to sections 24-32-3302(12), 24-32-3302(13), 24-32-3302(20), 24-32-3302(32), 24-32-3305(5), 24-32-3306(1), 24-32-3307(2), 24-32-3309(1)(a), and 24-32-3327, C.R.S., the State Housing Board adopts the following requirements for manufactured homes constructed to the "National Manufacturing Housing Construction and Safety Standards Act of 1974", 42 U.S.C. sec. 5401 et seq. (manufactured from June 15, 1976 to present):
Manufactured Home and Tiny Home Installation Standards
These standards and guidelines are available through the Division of Housing in the form of the "Manufactured Home and Tiny Home Installation Handbook" located at:https://www.colorado.gov/dola/division-housing.
Revise to read as follows:
The installer shall verify data plates provided with a HUD-code home prior to installation in the state of Colorado. The data plate shall be matched with the home (serial numbers). The data plate shall indicate the following minimums:
Wind Zone: I
Thermal Zone: III
Roof Load: Middle (30 PSF)
If the data plate does not meet these minimum requirements, the installer shall not set the home. The installer is required to check with the local jurisdiction where the home will be located to determine if it is designed for the area's proven snow or wind load since some parts of the state are subjected to heavy snow and/or high winds.
Revise to read as follows:
Fire separation distances shall comply with local rules or regulations. In their absence, the most current version of the International Residential Code (IRC) as adopted by the Housing Board applies.
Revise to read as follows:
Soil that supports footings and foundations shall be capable of accommodating all loads required by this standard. To help prevent settling or sagging, the foundation must be constructed on firm, undisturbed soil or 90% compacted soil. The design bearing capacity of the soil shall be determined in accordance with Section 5.6.
Revise as follows:
Soils that appear to be composed of peat, organic clays, uncompacted fill, expansive or other unusual conditions shall have a licensed engineer determine the classification and maximum allowable soil bearing capacity.
Otherwise the bearing capacity of the soil shall be assumed to be 1,500 psf.
A larger bearing capacity for the soil may be used as follows provided the class of soil is known:
Sandy gravel and/or gravel, very dense or cemented sands (GW, GP, SW, SP, GM, SM) ------------- 2,000 psf
Sedimentary and foliated rock---------------------------- 4,000 psf
When a value other than 1,500 psf is determined for the soil bearing capacity it shall be recorded by the installer on the Division of Housing's Installation Authorization form and justification for higher values shall also be provided.
Revise as follows:
If the space under the home is to be enclosed with skirting or other material, a vapor retarder that keeps ground moisture out of the home shall be installed unless specifically allowed to be omitted by the authority having jurisdiction.
Revise as follows:
The vapor retarder may be placed directly beneath footings, or otherwise installed around or over footings placed at grade, and around anchors or other obstructions. Any voids or tears in the vapor retarder must be repaired.
Delete this section.
Revise as follows:
Tables 6.2.3.1.3(a), 6.2.3.1.3(b), and 6.2.3.1.3(c) for pier capacities, as replaced in Appendix A, shall be used when the manufacturer's installation instructions are not available.
Revise as follows:
Manufactured piers shall be rated at least to the capacities given in Tables 6.2.3.1.3(a), 6.2.3.1.3(b), and 6.2.3.1.3(c), as replaced in Appendix A, and locally constructed piers shall be designed to transmit these loads safely as required by 6.2.3.2.
Revise as follows:
Caps shall be of solid masonry of at least 4 in. (100 mm) nominal thickness, or of treated or hardwood dimensional lumber at least 2 in. (50mm) nominal thickness, or of 1/2" thick steel.
Revise as follows:
Nominal 4 in. x 6in. (100mmx 150mm) hardwood shims shall be used to level the home and fill any gaps between the base of the I-beam and the top of the pier cap. Any of the following hardwood species may be used: Ash, Beech, Birch, Hickory, Oak, Rock Elm, Black or Red Maple, or Sweetgum.
Revise as follows:
Hardwood (species identified in the amendment to Section 6.2.3.2.3.1 above) or treated wood plates shall be used to fill in any remaining vertical gap no thicker than 2". The maximum total gap to be filled with shims and plates shall be 2".
Revise as follows:
All homes. Supports shall be placed on both sides of side wall exterior doors and any other side wall openings greater than 48 in. (such as entry and sliding glass doors), and under porch posts, factory installed fireplaces and wood stoves. Size perimeter piers under openings based on Table 6.2.3.1.3(b), as replaced in Appendix A, "Exterior wall" where the actual side wall opening shall be less than or equal to the spacing selected from the table.
Homes requiring perimeter blocking. Refer to Figure 6.2.5.3 and Figure 6.2.5.4 and Table 6.2.3.1.3(b), as replaced in Appendix A, for homes requiring perimeter blocking in addition to sidewall opening blocking described above.
Delete this section.
Delete this section.
Revise as follows:
The home shall be installed and leveled by installation personnel approved by the State of Colorado to install manufactured homes.
Revise as follows:
The interconnection of multi-section homes shall be completed in accordance with the manufacturer's installation instructions. When the manufacturer's installation instructions are not available, the interconnection of multi-section homes shall be in accordance with Table 7.3, as provided in Appendix A, or per the requirements approved by a State of Colorado licensed engineer.
Section 7.5.1 Security against the wind
.Section 7.5.1.1
Revise as follows:
After blocking and leveling, the installer shall secure the manufactured home against wind per Section 7.5.2 or Section 7.5.3. Anchorage shall be for Wind Zone I. Homes that are designed for Wind Zone II and III must be anchored per the Manufacturer's Installation Instructions or the requirements of a professional engineer.
Add the following:
A proprietary anchorage system may be used to resist overturning and lateral movement (sliding) caused by wind as long as it complies with all of the following:
Section 7.5.3.1 Specifications for Tie-Down Straps
and Anchors
Add the following:
Straps and anchors are to have corrosion protection at least equivalent to that provided by a coating of zinc on steel of not less than 0.30 oz/ft2 of surface coated. Straps and anchoring equipment must be capable of resisting a minimum ultimate load of 4,725 lbs and a working load of 3,150 lbs as installed; determined by a licensed professional engineer, architect or tested by a nationally recognized third-party agency. Straps are to be 1.25"x0.035" or larger steel strapping conforming to ASTM D 3953, Type 1, Grade 1, Finish B. Anchors are to be installed in accordance with their listing or certification to their full depth.
Section 7.5.3.2.1 Transverse Anchorage
Add the following:
The number and location of anchors and anchor straps for securing single-section and multi-section manufactured homes in the transverse direction shall conform to the manufacturer's installation instructions. When relocating the home or when the manufacturer's installation instructions are not available, the number and location of anchors and anchor straps shall conform to Table 7.5.3.2.1, Figure 7.5.3.2.1(a), and Figure 7.5.3.2.1(b), as provided in Appendix A.
Add the following:
The number and location of anchors and anchor straps for securing single-section and multi-section manufactured homes in the longitudinal direction shall conform to the manufacturer's installation instructions. When relocating the home or when the manufacturer's installation instructions are not available, the number and location of longitudinal anchors and anchor straps shall conform to Table 7.5.3.2.2 and Figure 7.5.3.2.1(a), as provided in Appendix A.
Add the following:
The installed ground anchor type and size/length must be listed for use in the soil class at the site and for the minimum and maximum angle permitted between the diagonal strap and the ground and all ground anchors must be installed in accordance with their listing or certification and the ground anchor manufacturer installation instructions. Unless the foundation system is frost-protected to prevent the effects of frost heave, the ground anchors shall be installed below the frost line. Ground anchor stabilizer plates shall be installed in accordance with the anchor and plate manufacturer installation instructions.
Add the following:
If sidewall, over-the-roof, mate-line, or shear wall straps are installed on the home, they must be connected to an anchoring assembly.
Revise as follows:
Expanding rooms shall be installed in accordance with the manufacturer's instructions. When the manufacturer's instructions are not available, perimeter blocking shall be installed in accordance with Table 6.2.3.1.3(b), as replaced in Appendix A, and anchors shall be installed in accordance with Section 7.5.3.2.
Revise (2) as follows:
Revise as follows:
Carports, awnings, porches, roof covers, and other similar attachments or additions shall not be supported by a manufactured home unless the home was specifically designed to accommodate such attachments or the attachment is designed by a licensed professional engineer. Non-structural connections for flashings and coverings at the junction are acceptable.
Delete this section.
Revise as follows:
Access opening(s) not less than 18 inches in width and 24 inches in height must be provided and located so that any utility connections are accessible.
Revise as follows:
Telephone, cable TV, and similar wiring shall be installed per the Authority Having Jurisdiction (AHJ) requirements and the National Electric Code (NEC).
Add new Section 9.4.3 to read as follows:
If other fixtures or appliances are to be site-installed, follow the manufacturer's installation instructions. Use only products listed for manufactured homes and follow all applicable local codes.
Add this new section to read as follows:
Verify appliance is installed per the manufacturer's installation instructions including any combustion air requirements. Verify flues are in place and are properly connected and extend through the roof with flashing and caps.
Revise as follows:
Before making any connection to the site supply, the inlet orifices of all gas-burning appliances shall be checked to ensure they are correctly set-up for the type of gas to be supplied and are sized correctly for the altitude above sea level where the home is set. The manufacturer's installation instructions for the appliance shall be followed.
Revise as follows:
Verify smoke alarms are installed to protect the living area, rooms designed for sleeping, on upper levels, and in the basement for homes installed over a basement. Verify smoke alarms are installed and operating properly to meet the requirements of 24 CFR 3280.
An approved carbon monoxide alarm shall be installed outside of each separate sleeping area within 15 feet of the entrance to the bedrooms in dwelling units within which fuel-fired appliances are installed and in dwelling units that have attached garages.
Fire separation distances shall comply with local rules or regulations. In their absence, the most current version of the International Residential Code (IRC) as adopted by the State Housing Board, shall apply.
Revised as follows:
In the multi-section tables under the marriage wall opening width (ft.), the values given for required effective footings area - Aftg (sq.ft.), shall be divided by 2.
8 CCR 1302-14-2