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Chapter 10-7: Energy Conservation and Insulation Code1

10-7-1.  Legislative Intent. Go to the top

The purpose of this chapter is to protect the public health, safety, and welfare by encouraging the conservation of scarce energy resources through the regulation of building construction standards to minimize energy consumption for heating, cooling, lighting, and ventilating structures in the city and to encourage building design utilizing green building techniques.

Ordinance Nos. 7566 (2007); 7925 (2013)

10-7-2.  Energy Conservation Code. Go to the top

(a)  Council adopts by reference the 2012 International Energy Conservation Code of the International Code Council with the amendments specified below. This chapter shall be administered, applied, and interpreted in accordance with and as part of Chapter 10-5, "Building Code," B.R.C. 1981. This chapter is also intended to comply with and be interpreted and enforced so as to comply with 42 U.S.C. Section 6297(f)(3) and any other federal requirements to avoid preemption. For purposes of 42 U.S.C. Section 6297(f)(3), "new construction" shall be interpreted to include all work that triggers the requirements established in this chapter.

(b)  Exception 3 of Section C101.4.3 is repealed and reenacted as follows:

3.1. For an interior remodel of a residential structure, where the work authorized by a building permit under Chapter 10-5, "Building Code," B.R.C. 1981, does not alter more than 500 square feet of the existing conditioned space, existing ceiling, wall, or floor cavities exposed during construction are exempt from meeting the provisions for new construction provided that exposed wall framing cavities are insulated to their fullest depth, but no less than R-13, and attics and exposed or accessible floor/ceiling assemblies separating conditioned spaces from unconditioned spaces are insulated to their fullest depth, but no less than R-38 wherever possible. All replacement fenestration shall meet the prescriptive requirements of Table R402.1.1 or R402.1.3. Portions of basements and crawlspaces separating conditioned spaces from unconditioned spaces shall meet the prescriptive requirements of Table R402.1.1 or R402.1.3 for climate zone 5 wherever possible. The provisions of section R402.2 shall apply.

3.2. For additions to residential structures where the work authorized by a building permit under Chapter 10-5, "Building Code," B.R.C. 1981, does not add more than 500 square feet, building envelope components shall meet the provisions of Table R402.1.1 or R402.1.3, and applicable portions of Chapter 10-7-5, "Green Points," B.R.C. 1981. The provisions of section R402.2 shall apply.

3.3. Remodels of nonresidential structures where the work authorized by a building permit under Chapter 10-5, "Building Code," B.R.C. 1981, does not alter more than 500 square feet.

(c)  Section C102.1.1 is repealed and reenacted as follows:

C102.1.1 Above code programs. Except for those residential structures and portions of structures exempt from this code, the requirements of Chapter 10-7.5, "Green Building and Green Points Program," B.R.C. 1981, shall be used to demonstrate compliance with the energy efficiency components of this code.

(d)  Section C103.1 is repealed and reenacted to read as follows:

C103.1 General. Construction documents and other supporting data shall be submitted in one or more sets with each application for a permit. The construction documents and designs submitted under the provisions of this chapter shall be prepared by and bear the stamp of a Colorado licensed professional engineer or architect. Documents submitted for the purposes of section C507 shall be submitted by a Colorado licensed engineer, architect, or a professional who demonstrates the knowledge and experience to perform such calculations. Where special conditions exist, the code official is authorized to require additional construction documents to be prepared by a licensed professional.

Exceptions:

1. The code official may waive the submission of construction documents and other supporting data if the official finds that the nature of the work does not require review of the documents or data to obtain compliance. This waiver authority does not apply to documents required to be prepared by a licensed architect or engineer.

(e)  Sections C103.3 through C103.5 are deleted.

(f)  Section C104.3, "Final inspection," is amended by adding a new paragraph to read:

The applicant must provide at time of final inspection of a commercial building written verification which bears the stamp of a licensed architect or engineer or special inspector as described in section 107.3.4 of the 2012 edition of the International Building Code that the structure conforms with the provisions of Chapter 4.

(g)  Sections C104.5 through C104.8.1 are deleted.

(h)  Section C107, "Fees," is deleted.

(i)  Section C108, "Stop work order," is deleted.

(j)  Section C109, "Board of Appeals," is deleted.

(k)  Section C202, the definition of "Code Official" is repealed and reenacted to read:

Code official is the city manager.

(l)  Section C401.1 is repealed and reenacted to read:

C401.1 Scope. The requirements contained in this chapter are applicable to new commercial buildings and additions to or remodels of commercial buildings. Commercial buildings shall exceed the energy efficiency requirements of ASHRAE/IESNA Standard 90.1 Energy Standard for Building Except for Low-Rise Residential Buildings by at least 30 percent or other approved equivalent design criteria.

C401.1.1 Alternative approaches for compliance. The following methods of compliance may be used in place of the approach described in section 401.1 above:

1. Buildings of 20,000 square feet or less may be designed to a prescriptive standard as detailed in this chapter or through other measures that result in a building that is at least 30 percent more energy efficient than the 2012 IECC.

2. Commercial core and shell buildings that have 50 percent or less finished floor area may divide the 30 percent energy efficiency requirement between the core and shell building design and the future interior tenant finish design. The energy efficiency savings percentages assigned to each element of the building shall be designated at the time of the submittal of the building permit for the core and shell permit.

3. The construction documents for remodeling an existing commercial envelope, mechanical and lighting systems shall demonstrate compliance with this section in one of the following ways described below. The construction documents shall include compliance documentation that demonstrates that:

A. The altered building area or systems will meet the requirements of section C407, Total Building Performance, 2012 IECC, and the resulting compliance package shows an altered building area or system that is 30 percent more energy efficient than the 2012 IECC;

B. The remodel area will meet a set of prescriptive requirements approved by the city manager that are at least 30 percent more efficient than the 2012 IECC; or

C. The remodel area meets the 2012 IECC requirements and is submitted with an energy efficiency implementation plan prepared by a licensed architect or registered professional engineer which shows how the process will contribute to future energy efficiency improvements to bring the building up to 30 percent above the 2012 IECC.

Exception: If the work is limited to mechanical equipment replacement, the replacement equipment shall meet the requirements of sections C403 and C404.

(m)  Section C401.2, "Application," is repealed and reenacted to read:

C401.2 Application.

1. Buildings larger than 20,000 square feet must demonstrate compliance through third party performance modeling that is approved by the city manager.

2. Commercial buildings of 20,000 square feet or less, meeting the requirements of this section C401 through the alternate approach of compliance found in section C401.1.1 subparagraph 1. by demonstrating that a building or system is 30 percent more energy efficient that the 2012 IECC, shall also comply with:

a. The requirements of sections C402, C403, C404, C405, and C406; or

b. The requirements of sections C407, C402.4, C403.2, C404, C405.2, C405.3, C405.4, C405.6, and C405.7.

(n)  Section C401.2.1 is deleted.

(o)  The first sentence of Section C407.3 is repealed and reenacted to read as follows:

Compliance based on total building performance requires that a proposed building (proposed design) be shown to have an annual energy cost that is at least 85 percent less than the annual energy cost of the standard reference design.

(p)  Section R101.4.3, "Additions, alteration, renovations, and repairs," a new subsection is added previous to the exceptions to read as follows:

R101.4.3.1. All permit applications involving demolition, new construction, and remodels and/or additions of residential buildings greater than 500 square feet shall meet the requirements of this code and Chapter 10-7-5, "Green Building and Green Points Program," B.R.C. 1981 as applicable.

(q)  Exception 3 of Section R101.4.3 is repealed and reenacted as follows:

3.1. For an interior remodel of a residential structure, where the work authorized by a building permit under Chapter 10-5, "Building Code," B.R.C. 1981, does not alter more than 500 square feet of the existing conditioned space, existing ceiling, wall, or floor cavities exposed during construction are exempt from meeting the provisions for new construction, provided that exposed wall framing cavities are insulated to the fullest depth, but not less than R-13, and attics and exposed or accessible floor/ceiling assemblies separating conditioned spaces from unconditioned spaces are insulated to their fullest depth, but no less than R-38 wherever possible. All replacement fenestration shall meet the prescriptive requirements of Table R402.1.1 or R402.1.3. Portions of basements and crawlspaces separating conditioned spaces from unconditioned spaces shall meet the prescriptive requirements of Table R402.1.1 or R402.1.3 for climate zone 5 wherever possible. The provisions of section R402.2 shall apply.

3.2. For additions to residential structures where the work authorized by a building permit under Chapter 10-5, "Building Code," B.R.C. 1981, does not add more than 500 square feet, building envelope components shall meet the provisions of Table R402.1.1 or R402.1.3, and applicable portions of Chapter 10-7-5, "Green Building and Green Points Program," B.R.C. 1981. The provisions of section 402.2 shall apply.

(r)  Section R102.1.1 is repealed and reenacted as follows:

R102.1.1 Above code programs. Except for those residential structures and portions of structures exempt from this code, the requirements of Chapter 10-7-5, "Green Building and Green Points Program," B.R.C. 1981, shall be used to demonstrate compliance with the energy efficiency components of this code.

(s)  Section R103.1 is repealed and reenacted to read as follows:

R103.1 General. Construction documents and other supporting data shall be submitted in one or more sets with each application for a permit. The construction documents and designs submitted under the provisions of this chapter shall be prepared by and bear the stamp of a Colorado licensed professional engineer or architect. Documents submitted for the purposes of section R405 shall be submitted by a Colorado licensed engineer, architect, or a professional who demonstrates the knowledge and experience to perform such calculations. Where special conditions exist, the code official is authorized to require additional construction documents to be prepared by a licensed professional.

Exceptions:

1. The code official may waive the submission of construction documents and other supporting data if the official finds that the nature of the work does not require review of the documents or data to obtain compliance. This waiver authority does not apply to documents required to be prepared by a licensed architect or engineer.

(t)  Sections R103.3 through R103.5 are deleted.

(u)  Sections R104.5 through R104.8.1 are deleted.

(v)  Section R107, "Fees," is deleted.

(w)  Section R108, "Stop Work Order," is deleted.

(x)  Section R109, "Board of Appeal," is deleted.

(y)  Section R202, the definition of "Code Official" is repealed and reenacted to read:

Code official is the city manager.

Ordinance Nos. 7172 (2001); 7566 (2007); 7620 (2008); 7925 (2013) ; 7963 (2014)

10-7-3.  Regulations. Go to the top

The city manager may make reasonable interpretive and administrative regulations to aid in applying this chapter under the procedures of Chapter 1-4, "Rulemaking," B.R.C. 1981, including rules establishing methods for showing compliance with the requirements of this chapter.

Ordinance No. 7925 (2013)


1 Adopted by Ordinance No. 4636. Amended by Ordinance Nos. 4984, 5850, 7233. Derived from Ordinance Nos. 4236, 4503. Repealed and reenacted by Ordinance No. 7141.