Heads up: There are no suggested sections in this chapter.
Heads up: There are no amended sections in this chapter.
The 2019 Oregon Zero Energy Ready Commercial Code, Part II, multi-family energy provisions, consists of the following:

  • Chapter 1 of the Oregon Structural Specialty Code (OSSC), including specific modifications as shown below
  • 2018 International Energy Conservation Code (IECC)—Commercial Provisions, including specific modifications as shown below
These provisions are Chapter 13 of the Oregon Structural Specialty Code (OSSC) Section 1301.1 exception for multi-family energy compliance and shall be referred to herein as "this code." The OSSC shall be referred to herein as the "Building Code."

  Sections EM102 through EM104 are specific to this code and additional to the requirements of Chapter 1 of the Building Code.
This code applies to Group R-2, R-3, and R-4 buildings, three stories and fewer above the finished grade, designed and constructed under the Building Code.
This code shall regulate the design and construction of buildings for the effective use of energy. This code is intended to provide flexibility to permit the use of innovative approaches and techniques to achieve the effective use of energy. This code is not intended to abridge safety, health or environmental requirements contained in other applicable codes or ordinances.
This code is administered and enforced under the provisions and authority granted in Chapter 1 of the Building Code with the energy specific Sections EM101 through EM104 of this code.
The commercial energy [CE] provisions of the 2018 International Energy Conservation Code (IECC) shall serve as the construction provisions for this code, and shall be referred to herein as "the IECC." The modifications in EM103 and EM104 shall apply.

  The administrative and enforcement provisions of the IECC, including submittal, inspection and verification, and recording and reporting are superseded by this code, unless specifically noted in these provisions. The residential provisions [RE] of the 2018 International Energy Conservation Code (IECC) shall not apply.
The following provisions are additional to the requirements of Section 102 of the Building Code.
References to the International Building Code or the Building Code shall mean the Oregon Structural Specialty Code as adopted by OAR 918-460-0100.

References to the International Electrical Code, the NFPA 70, or the Electrical Code shall mean the Oregon Electrical Specialty Code as adopted by OAR 918-400-0455.

References to the International Fuel Gas Code shall mean the Oregon Mechanical Specialty Code, Appendix C as adopted by OAR 918-440-0010.

References to the International Mechanical Code or the Mechanical Code shall mean the Oregon Mechanical Specialty Code as adopted by OAR 918-440-0010.

References to the International Plumbing Code or the Plumbing Code shall mean the Oregon Plumbing Specialty Code as adopted by OAR 918-750-0110.

References to the International Residential Code or the Residential Code shall mean the Oregon Residential Specialty Code as adopted by OAR 918-480-0005.
Except as specified in Sections EM103.3.1 through EM103.3.2, this code shall not be used to require the removal, alteration or abandonment of, nor prevent the continued use and maintenance of, an existing building or building system lawfully in existence at the time of adoption of this code.
Where unconditioned space or semiheated space in a building is converted to a conditioned space, such conditioned space shall be brought into compliance with the applicable requirements of the IECC that would apply to the building envelope, heating, ventilating, air-conditioning, service water heating, power lighting, and other systems and equipment of the space as if the building was new.
Additions, alterations, renovations or repairs to an existing building, building system or portion thereof shall conform to the provisions of this code as they relate to energy provisions for new construction without requiring the unaltered portion(s) of the existing building or building system to comply. Additions, alterations, renovations or repairs shall not create an unsafe or hazardous condition or overload existing building systems. An addition shall be deemed to comply with this code if the addition alone complies or if the existing building and addition comply with this code as a single building.
The following provisions are additional to the requirements of Section 107 of the Building Code.
Construction documents shall be of sufficient clarity to indicate the location, nature and extent of the work proposed, and show in sufficient detail pertinent data and features of the building, systems and equipment as herein governed. Details shall include but are not limited to, as applicable, insulation materials and their R-values; fenestration U-factors and SHGCs; system design criteria; mechanical and service water heating system and equipment types, sizes and efficiencies; economizer description; equipment and system controls; fan motor horsepower (hp) and controls; duct sealing, duct and pipe insulation and location; lighting fixture schedule with wattage and control narrative; air sealing details; and COMcheck compliance report or equivalent division form. The building official shall not require or expect physical copies of record drawings, manuals, test reports, or energy reporting.

Exception: The building official is authorized to waive the requirements for construction documents, COMcheck reports, or other supporting data if the code official determines these are not necessary to confirm compliance with this code.
The following provisions are additional to the requirements of Section 110 of the Building Code.
Inspections shall be made to determine compliance with Chapter 13 and shall include, but not be limited to, inspections for: envelope air sealing, envelope insulation R-values and U-factors, fenestration U-factor, duct system insulation R-value, and HVAC and water-heating equipment efficiency.
The terms, abbreviations, and acronyms defined in Chapter 2 of the IECC shall apply to this code where it is not defined in Section 201.2 of the Building Code or in Section EM201.2 of this code. Terms that are not defined shall have their ordinarily accepted meanings within the context in which they are used.
The following definitions are additional to or replace definitions in the IECC.

BUILDING OFFICIAL. The officer charged with the administration and enforcement of this code, or a duly authorized representative.

CODE OFFICIAL. See "Building Official."

RESIDENTIAL BUILDING. For this code, includes buildings regulated by the Residential Code.
The following provisions replace the indicated sections in the IECC.

IECC C403.7.2 Enclosed parking garage ventilation controls. Enclosed parking garages used for storing or handling automobiles operating under their own power shall employ contamination-sensing devices and automatic controls configured to stage fans or modulate fan average airflow rates to 50 percent or less of design capacity, or intermittently operate fans less than 20 percent of the occupied time or as required to maintain acceptable contaminant levels in accordance with Mechanical Code provisions. Failure of contamination sensing devices shall cause the exhaust fans to operate continuously at design airflow.

Exceptions:
  1. Garages with a total exhaust capacity less than 8,000 cfm (3 775 L/s) with ventilation systems that do not utilize heating or mechanical cooling.
  2. Garages that have a garage area to ventilation system motor nameplate power ratio that exceeds 1125 cfm/hp (710 L/s/kW) and do not utilize heating or mechanical cooling.
The following provisions replace the indicated sections in the IECC.

IECC C405.1 General. This section covers lighting system controls, the maximum lighting power for interior and exterior applications and electrical energy consumption. No less than 90 percent of the lighting serving dwelling units shall be provided by lamps with an efficacy of not less than 65 lm/W or light fixtures with an efficacy of not less than 55 lm/W, or comply with Sections C405.2.4 and C405.3. Sleeping units shall comply with Section C405.2.4, and with Section C405.3 or not less than 90 percent of the lighting serving sleeping units shall be provided by lamps with an efficacy of not less than 65 lm/W or light fixtures with an efficacy of not less than 55 lm/W. Lighting installed in walk-in coolers, walk-in freezers, refrigerated warehouse coolers and refrigerated warehouse freezers shall comply with the lighting requirements of Section C403.10.1 or C403.10.2.
The following provisions replace the indicated sections in the IECC.

IECC C406.6 Dedicated outdoor air system. Buildings regulated by Section C403 shall be equipped with a dedicated outdoor air system and shall comply with all of the following:
  1. Outdoor air shall be provided to each zone by a dedicated outdoor air system that delivers 100-percent outdoor air without requiring operation of the heating and cooling system fans for ventilation air delivery.
  2. The dedicated outdoor air system shall include an energy recovery ventilation system in accordance with Section C403.7.4, configured to provide a change in enthalpy of not less than a 70 percent difference between the outdoor air and return enthalpies, at design conditions.
  3. The equipment and controls shall be configured to automatically turn off zone heating and cooling systems when there is no call for heating or cooling in the zone.
Exception: Fans used for heating and cooling using less than 0.1 Watts per cfm may operate when space temperatures are within the setpoint deadband in accordance with Section C403.4.1.2.
The following replaces the indicated information in IECC Table C407.5.1(1).
IECC TABLE C407.5.1(1)
SPECIFICATIONS FOR THE STANDARD REFERENCE AND PROPOSED DESIGNS
The vertical fenestration other than opaque doors section of this table is replaced with the following:
Vertical fenestration other than opaque doors Area
  1. The proposed vertical fenestration area; where the proposed vertical fenestration area is less than 30 percent of above-grade wall area.
  2. 30 percent of above-grade wall area where the proposed vertical fenestration area is 30 percent or more of the above-grade wall area.
As proposed
U-factor: as specified in Table C402. As proposed
SHGC: as specified in Table C402.4 except that for climates with no requirement (NR) SHGC = 0.40 shall be used As proposed
External shading and PF: None As proposed
Section C408 of the IECC is deleted in its entirety.
Section C505 of the IECC is deleted in its entirety.
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