ADOPTS WITH AMENDMENTS:

International Building Code 2012 (IBC 2012)

Heads up: There are no amended sections in this chapter.
The provisions of this chapter shall govern special building construction including membrane structures, temporary structures, pedestrian walkways and tunnels, automatic vehicular gates, awnings and canopies, marquees, signs, and towers and antennas.

3102.1 General

AMENDMENT
This section has been amended at the state or city level.
The provisions of Sections 3102.1 through 3102.8 shall apply to air-supported, air-inflated, membrane-covered cable and membrane-covered frame structures, collectively known as membrane structures, erected for a period of 180 days or longer. Membrane structures covering water storage facilities, water clarifiers, water treatment plants, sewage treatment plants, greenhouses and similar facilities not used for human occupancy are required to meet only the requirements of Sections 3102.3.1 and 3102.7. Membrane structures erected on a building, balcony, deck or other structure for any period of time shall comply with this section.
Noncombustible membrane structures shall be classified as Type IIB construction. Noncombustible frame or cable-supported structures covered by an approved membrane in accordance with Section 3102.3.1 shall be classified as Type IIB construction. Heavy timber frame-supported structures covered by an approved membrane in accordance with Section 3102.3.1 shall be classified as Type IV construction. Other membrane structures shall be classified as Type V construction.
Exception: Plastic less than 30 feet (9144 mm) above any floor used in greenhouses, where occupancy by the general public is not authorized, and for aquaculture pond covers is not required to meet the fire propagation performance criteria of NFPA 701.
Membranes and interior liners shall be either noncombustible as set forth in Section 703.5 or meet the fire propagation performance criteria of NFPA 701 and the manufacturer's test protocol.
Exception: Plastic less than 20 mil (0.5 mm) in thickness used in greenhouses, where occupancy by the general public is not authorized, and for aquaculture pond covers is not required to meet the fire propagation performance criteria of NFPA 701.
The area of a membrane structure shall not exceed the limitations set forth in Table 503, except as provided in Section 506.
Membrane structures shall not exceed one story nor shall such structures exceed the height limitations in feet set forth in Table 503.
Exception: Noncombustible membrane structures serving as roofs only.
Membrane structures shall be permitted to be utilized as specified in this section as a portion of buildings of other types of construction. Height and area limits shall be as specified for the type of construction and occupancy of the building.
A noncombustible membrane shall be permitted for use as the roof or as a skylight of any building or atrium of a building of any type of construction provided it is not less than 20 feet (6096 mm) above any floor, balcony or gallery.
A membrane meeting the fire propagation performance criteria of NFPA 701 shall be permitted to be used as the roof or as a skylight on buildings of Types IIB, III, IV and V construction, provided it is not less than 20 feet (6096 mm) above any floor, balcony or gallery.

3102.7 Engineering Design

AMENDMENT
This section has been amended at the state or city level.
The structure shall be designed and constructed to sustain dead loads; loads due to tension or inflation; live loads including wind, snow or seismic loads and in accordance with Chapter 16.
Air-supported and air-inflated structures shall be provided with primary and auxiliary inflation systems to meet the minimum requirements of Sections 3102.8.1 through 3102.8.3.
This inflation system shall consist of one or more blowers and shall include provisions for automatic control to maintain the required inflation pressures. The system shall be so designed as to prevent overpressurization of the system.
In addition to the primary inflation system, in buildings larger than 1,500 square feet (140 m2) in area, an auxiliary inflation system shall be provided with sufficient capacity to maintain the inflation of the structure in case of primary system failure. The auxiliary inflation system shall operate automatically when there is a loss of internal pressure and when the primary blower system becomes inoperative.
Blower equipment shall meet all of the following requirements:
  1. Blowers shall be powered by continuous-rated motors at the maximum power required for any flow condition as required by the structural design.
  2. Blowers shall be provided with inlet screens, belt guards and other protective devices as required by the building official to provide protection from injury.
  3. Blowers shall be housed within a weather-protecting structure.
  4. Blowers shall be equipped with backdraft check dampers to minimize air loss when inoperative.
  5. Blower inlets shall be located to provide protection from air contamination. The location of inlets shall be approved.

3102.8.2 Standby Power

ILLUSTRATION
Wherever an auxiliary inflation system is required, an approved standby power-generating system shall be provided. The system shall be equipped with a suitable means for automatically starting the generator set upon failure of the normal electrical service and for automatic transfer and operation of all of the required electrical functions at full power within 60 seconds of such service failure. Standby power shall be capable of operating independently for not less than 4 hours.
A system capable of supporting the membrane in the event of deflation shall be provided for in air-supported and air-inflated structures having an occupant load of 50 or more or where covering a swimming pool regardless of occupant load. The support system shall be capable of maintaining membrane structures used as a roof for Type I construction not less than 20 feet (6096 mm) above floor or seating areas. The support system shall be capable of maintaining other membranes not less than 7 feet (2134 mm) above the floor, seating area or surface of the water.

3103.1 General

AMENDMENT
This section has been amended at the state or city level.
The provisions of Sections 3103.1 through 3103.4 shall apply to structures erected for a period of less than 180 days.
Temporary structures that cover an area greater than 120 square feet (11.16 m2), including connecting areas or spaces with a common means of egress or entrance which are used or intended to be used for the gathering together of 10 or more persons, shall not be erected, operated or maintained for any purpose without obtaining a permit from the building official.
A permit application and construction documents shall be submitted for each installation of a temporary structure. The construction documents shall include a site plan indicating the location of the temporary structure and information delineating the means of egress and the occupant load.
Temporary structures shall be located in accordance with the requirements of Table 602 based on the fire-resistance rating of the exterior walls for the proposed type of construction.

3103.4 Means of Egress

ILLUSTRATION
Temporary structures shall conform to the means of egress requirements of Chapter 10 and shall have an exit access travel distance of 100 feet (30 480 mm) or less.
This section shall apply to connections between buildings such as pedestrian walkways or tunnels, located at, above or below grade level, that are used as a means of travel by persons. The pedestrian walkway shall not contribute to the building area or the number of stories or height of connected buildings.
Connected buildings shall be considered to be separate structures.
Exceptions:
  1. Buildings on the same lot in accordance with Section 503.1.2 shall be considered a single structure.
  2. For purposes of calculating the number of Type B units required by Chapter 11, structurally connected buildings and buildings with multiple wings shall be considered one structure.
The pedestrian walkway shall be of noncombustible construction.
Exceptions:
  1. Combustible construction shall be permitted where connected buildings are of combustible construction.
  2. Fire-retardant-treated wood, in accordance with Section 603.1, Item 1.3, shall be permitted for the roof construction of the pedestrian walkway where connected buildings are a minimum of Type I or II construction.
Only materials and decorations approved by the building official shall be located in the pedestrian walkway.
Walkways shall be separated from the interior of the building by not less than 2-hour fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both. This protection shall extend vertically from a point 10 feet (3048 mm) above the walkway roof surface or the connected building roof line, whichever is lower, down to a point 10 feet (3048 mm) below the walkway and horizontally 10 feet (3048 mm) from each side of the pedestrian walkway. Openings within the 10-foot (3048 mm) horizontal extension of the protected walls beyond the walkway shall be equipped with devices providing a 3/4-hour fire protection rating in accordance with Section 715.
Exception: The walls separating the pedestrian walkway from a connected building and the openings within the 10-foot (3048 mm) horizontal extension of the protected walls beyond the walkway are not required to have a fire-resistance rating by this section where any of the following conditions exist:
  1. The distance between the connected buildings is more than 10 feet (3048 mm). The pedestrian walkway and connected buildings, except for open parking garages, are equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1. The wall is capable of resisting the passage of smoke or is constructed of a tempered, wired or laminated glass wall and doors subject to the following:
    1. The wall or glass separating the interior of the building from the pedestrian walkway shall be protected by an automatic sprinkler system in accordance with Section 903.3.1.1 and the sprinkler system shall completely wet the entire surface of interior sides of the wall or glass when actuated;
    2. The glass shall be in a gasketed frame and installed in such a manner that the framing system will deflect without breaking (loading) the glass before the sprinkler operates; and
    3. Obstructions shall not be installed between the sprinkler heads and the wall or glass.
  2. The distance between the connected buildings is more than 10 feet (3048 mm) and both sidewalls of the pedestrian walkway are not less than 50 percent open with the open area uniformly distributed to prevent the accumulation of smoke and toxic gases.
  3. Buildings are on the same lot in accordance with Section 503.1.2.
  4. Where exterior walls of connected buildings are required by Section 705 to have a fire-resistance rating greater than 2 hours, the walkway shall be equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1.
The previous exception shall apply to pedestrian walkways having a maximum height above grade of three stories or 40 feet (12 192 mm), or five stories or 55 feet (16 764 mm) where sprinklered.
Access shall be provided at all times to a pedestrian walkway that serves as a required exit.
The unobstructed width of pedestrian walkways shall be not less than 36 inches (914 mm). The total width shall be not greater than 30 feet (9144 mm).
The length of exit access travel shall be 200 feet (60 960 mm) or less.
Exceptions:
  1. Exit access travel distance on a pedestrian walkway equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 shall be 250 feet (76 200 mm) or less.
  2. Exit access travel distance on a pedestrian walkway constructed with both sides not less than 50 percent open shall be 300 feet (91 440 mm) or less.
  3. Exit access travel distance on a pedestrian walkway constructed with both sides not less than 50 percent open, and equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, shall be 400 feet (122 m) or less.
Separation between the tunneled walkway and the building to which it is connected shall be not less than 2-hour fire-resistant construction and openings therein shall be protected in accordance with Table 716.5.
Awnings or canopies shall comply with the requirements of Sections 3105.2 through 3105.4 and other applicable sections of this code.
The following term is defined in Chapter 2:

Awnings and canopies shall be designed and constructed to withstand wind or other lateral loads and live loads as required by Chapter 16 with due allowance for shape, open construction and similar features that relieve the pressures or loads. Structural members shall be protected to prevent deterioration. Awnings shall have frames of noncombustible material, fire-retardant-treated wood, wood of Type IV size, or 1-hour construction with combustible or noncombustible covers and shall be either fixed, retractable, folding or collapsible.
Canopies shall be constructed of a rigid framework with an approved covering that meets the fire propagation performance criteria of NFPA 701 or has a flame spread index not greater than 25 when tested in accordance with ASTM E 84 or UL 723.
Marquees shall comply with Section 3106.2 through 3106.5 and other applicable sections of this code.
The height or thickness of a marquee measured vertically from its lowest to its highest point shall be not greater than 3 feet (914 mm) where the marquee projects more than two-thirds of the distance from the lot line to the curb line, and shall be not greater than 9 feet (2743 mm) where the marquee is less than two-thirds of the distance from the lot line to the curb line.
Where the roof or any part thereof is a skylight, the skylight shall comply with the requirements of Chapter 24. Every roof and skylight of a marquee shall be sloped to downspouts that shall conduct any drainage from the marquee in such a manner so as not to spill over the sidewalk.
Every marquee shall be so located as not to interfere with the operation of any exterior standpipe, and such that the marquee does not obstruct the clear passage of stairways or exit discharge from the building or the installation or maintenance of street lighting.
A marquee shall be supported entirely from the building and constructed of noncombustible materials. Marquees shall be designed as required in Chapter 16. Structural members shall be protected to prevent deterioration.
Signs shall be designed, constructed and maintained in accordance with this code.
Towers shall be designed and constructed in accordance with the provisions of TIA-222. Towers shall be designed for seismic loads; exceptions related to seismic design listed in Section 2.7.3 of TIA-222 shall not apply. In Section 2.6.6.2 of TIA 222, the horizontal extent of Topographic Category 2, escarpments, shall be 16 times the height of the escarpment.
Exception: Single free-standing poles used to support antennas not greater than 75 feet (22 860 mm), measured from the top of the pole to grade, shall not be required to be noncombustible.
Towers shall be located such that guy wires and other accessories shall not cross or encroach upon any street or other public space, or over above-ground electric utility lines, or encroach upon any privately owned property without the written consent of the owner of the encroached-upon property, space or above-ground electric utility lines. Towers shall be equipped with climbing and working facilities in compliance with TIA-222. Access to the tower sites shall be limited as required by applicable OSHA, FCC and EPA regulations.

Section 3109 Swimming Pool Enclosures and Safety Devices

AMENDMENT
This section has been amended at the state or city level.
Note: Section 3109 is not adopted by the State of Oregon. Please reference OAR Chapter 333, Division 60 concerning public swimming pools as promulgated by the Department of Human Services under the authority established in ORS, Chapter 448.

3109.1 General

AMENDMENT
This section has been amended at the state or city level.

3109.2 Definition

AMENDMENT
This section has been amended at the state or city level.

3109.3 Public Swimming Pools

AMENDMENT
This section has been amended at the state or city level.

3109.4 Residential Swimming Pools

AMENDMENT
This section has been amended at the state or city level.

3109.4.1 Barrier Height and Clearances

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.1 Openings

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.2 Solid Barrier Surfaces

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.3 Closely Spaced Horizontal Members

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.4 Widely Spaced Horizontal Members

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.5 Chain Link Dimensions

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.6 Diagonal Members

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.7 Gates

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.8 Dwelling Wall as a Barrier

AMENDMENT
This section has been amended at the state or city level.

3109.4.1.9 Pool Structure as Barrier

AMENDMENT
This section has been amended at the state or city level.

3109.4.2 Indoor Swimming Pools

AMENDMENT
This section has been amended at the state or city level.

3109.4.3 Prohibited Locations

AMENDMENT
This section has been amended at the state or city level.

3109.5 Entrapment Avoidance

AMENDMENT
This section has been amended at the state or city level.
Automatic vehicular gates shall comply with the requirements of Sections 3110.2 through 3110.4 and other applicable sections of this code.
The following term is defined in Chapter 2:

Vehicular gates intended for automation shall be designed, constructed and installed to comply with the requirements of ASTM F 2200.
Vehicular gate openers, where provided, shall be listed in accordance with UL 325.

Section 3111 Solar Photovoltaic Panels/Modules

AMENDMENT
This section has been amended at the state or city level.

3111.1 General

AMENDMENT
This section has been amended at the state or city level.

3111.1 Scope

AMENDMENT
This section has been amended at the state or city level.
The provisions of this section shall govern the installation of photovoltaic (PV) components including location, materials and structural support. Where the installation of PV systems is not covered by this section the installation shall be in compliance with the applicable provisions of this code as defined in ORS 455.020. For electrical installations see the Electrical Code.
Exception: Where applicable provisions are specified, compliance with the Residential Code shall satisfy the requirements of this section when the PV system is installed on;
  1. Detached one- and two- family dwellings and townhouses classified as Group R-3, and Group U Occupancies; and
  2. Residences used for family child care home or foster care in accordance with ORS Chapters 418, 443 and 657A; and
  3. Detached congregate living facilities (each accommodating 10 persons or less) and detached lodging houses containing not more than five guest rooms.

3111.2 Definitions

AMENDMENT
This section has been amended at the state or city level.
The following terms are defined in Chapter 2.
  1. ARRAY
  2. CONVENTIONAL LIGHT-FRAME WOOD CONSTRUCTION.
  3. CUTOUT.
  4. DEAD LOAD.
  5. MODULE.
  6. NON-OCCUPIED ACCESSORY STRUCTURE.
  7. PATHWAY.
  8. PHOTOVOLTAIC (PV).
  9. PHOTOVOLTAIC (PV) SYSTEM.
  10. RACKING.
  11. SOLAR ROOF.
  12. SUPPORTS.

3111.3 Minimum Standards and Quality

AMENDMENT
This section has been amended at the state or city level.
Photovoltaic (PV) components, racking, support structures and attachments shall be in accordance with the provisions of this section. PV systems shall be designed and installed in accordance with this code and the manufacturer's installation instructions.

3111.3.1 Type of Construction

AMENDMENT
This section has been amended at the state or city level.
PV systems, including supporting structure, shall comply with the requirements of Chapter 6 of this code for the structures required to be of non-combustible type of construction or the Residential Code as applicable.

3111.3.2 Material Standards

AMENDMENT
This section has been amended at the state or city level.
PV modules shall be certified in accordance with UL 1703 and shall be installed in accordance with the manufacturer's installation instructions.

3111.3.3 Certification Requirements

AMENDMENT
This section has been amended at the state or city level.
PV racking and attachments shall comply with one of the following:
  1. Certified to UL 1703 by a nationally recognized testing laboratory and installed in accordance with the manufacturer's installation instructions.
  2. For exempt structures in accordance with Section 105.2, documentation demonstrating to the satisfaction of the building official, that the racking system has been designed to resist the applicable loads, and installed in accordance with the manufacturer's installation instructions.
  3. Designed by an Oregon Licensed Engineer or Architect.
  4. Field evaluation by an Approved Field Evaluation Firm.
  5. Approval by the building official.

3111.3.4 Fire Classification

AMENDMENT
This section has been amended at the state or city level.
Rooftop mounted PV systems shall be non-combustible or have a fire classification that is equal to or greater than the roof assembly required by Section 1505.1 of this code.

3111.3.5 Weather Protection

AMENDMENT
This section has been amended at the state or city level.
All components of the PV system exposed to the weather shall be constructed of materials approved for exterior locations and protected from corrosion or deterioration.

3111.4 Location

AMENDMENT
This section has been amended at the state or city level.
The location of Photovoltaic (PV) components, racking, support structures and attachments shall be in accordance with the provisions of this chapter.

3111.4.1 Zoning Requirements

AMENDMENT
This section has been amended at the state or city level.
The installation of PV systems shall comply with the requirements of the zoning requirements of the municipality.

3111.4.2 Flood Hazard Areas

AMENDMENT
This section has been amended at the state or city level.
Installation of PV systems within flood hazard areas, as defined by the Flood Plain Administrator, shall comply with this code or the Residential Code, Section R322 as applicable.

3111.4.3 Building Egress

AMENDMENT
This section has been amended at the state or city level.
PV systems shall not be installed in locations that would restrict, or otherwise prevent the use of, the required means of egress and emergency escape and rescue. The means of egress shall comply with Chapter 10 of this code or the Residential Code, Section R310 and R311 as applicable.

3111.4.4 Light and Ventilation

AMENDMENT
This section has been amended at the state or city level.
PV systems shall not be installed in locations that would restrict the required light and ventilation. Light and ventilation shall comply with Chapter 12 of this code or the Residential Code, Section R303 as applicable.

3111.4.5 Rooftop Vent and Drain Clearances

AMENDMENT
This section has been amended at the state or city level.
PV systems shall not be installed in locations that would restrict the function of plumbing or mechanical vents, skylights, drains or other rooftop features.

Exception: Non-operable skylights in one- and two-family dwellings.

3111.4.6 Mechanical Equipment Clearances

AMENDMENT
This section has been amended at the state or city level.
PV systems shall be installed with not less than a 30 inch (762 mm) clearance around mechanical equipment requiring service or maintenance. The specific provisions of the Mechanical Code and Electrical Code apply to installations of PV systems.

3111.4.7 Roof Drainage

AMENDMENT
This section has been amended at the state or city level.
PV systems shall not be installed in a manner that would obstruct roof drainage. No vertical supports or roof penetrations shall be allowed within 12 inches (305 mm) of each side of the low point of the valley. The PV modules or racking may extend into the valley no more than 6 inches (152 mm) from the valley low point provided that a minimum 3 inch (76 mm) clearance above the surface of the roof is maintained.

3111.4.8 Fire Fighter Access and Escape

AMENDMENT
This section has been amended at the state or city level.
To provide access and escape for fire fighters the location of roof-mounted PV modules shall comply with the requirements of this section.

3111.4.8.1 General Pathway Requirements

AMENDMENT
This section has been amended at the state or city level.
All PV installations shall include a 36 inch wide (914mm) pathway maintained along three sides of the solar roof. The bottom edge of a roof with a slope that exceeds 2:12 shall not be used as a pathway. All pathways shall be located over a structurally supported area and measured from edge of the roof and horizontal ridge to the solar array or any portion thereof.
Exception:
  1. On structures with a PV array area of 1,000 square feet (92.90 m2) or less installed on a roof with a slope that exceeds 2:12 and with an intersecting adjacent roof and where no section is larger than 150 feet (45720 mm) measured in length or width:
    1. Where the PV array does not exceed 25% as measured in plan view of total roof area of the structure, a minimum 12 inch (305mm) unobstructed pathway, shall be maintained along each side of any horizontal ridge.
    2. Where the solar array area exceeds 25% as measured in plan view of total roof area of the structure, a minimum of one 36 inch (914 mm) unobstructed pathway from ridge to eave, over a structurally supported area, must be provided in addition to a minimum 12 inch (305 mm) unobstructed pathway along each side of any horizontal ridge.
  2. Pathways are not required on non-occupied accessory structures provided they are separated from occupied structures by a 6 feet (3048 mm) minimum separation distance or by a minimum two-hour fire rated assembly.
  3. Townhouses providing fire separation as required by the applicable code at the time of construction may be considered one structure and comply with the provisions of Section 3111.4.8.1(1.1).
Where townhouses are separated by real property lines and pathways cross real property lines, the building official shall review, approve and maintain a record of all easements for access related to the PV system installation. Easements may be general in nature or they may describe specific locations. The applicant shall provide a copy of the recorded easement to the building official prior to issuance of the building permit. Easements shall be recorded for each affected dwelling unit and the book and page number provided to the jurisdiction having authority.

3111.4.8.2 Intermediate Pathway Locations

AMENDMENT
This section has been amended at the state or city level.
Systems that include a solar array section that is larger than 150 feet (45720 mm) measured in length or width shall have additional intermediate pathways. An intermediate pathway not less than 36 inches (914 mm) wide separating the array shall be provided for every 150 feet (45720 mm) of array including offset modules or angled installations. The maximum square footage of an array shall not exceed 22,500 ft2 (2090 m2) without the installation of an intermediate pathway.

3111.4.8.2.1

AMENDMENT
This section has been amended at the state or city level.
Where a system is required to have intermediate pathways, all pathways shall have one or more cutouts located adjacent to the pathway. No point on the pathway shall be more than 25 feet (7620) from a cutout.

3111.4.8.3 Prohibited Locations

AMENDMENT
This section has been amended at the state or city level.
Pathways shall not be located within 12 inches of the low point of a valley

3111.4.8.4 Smoke and Heat Vents

AMENDMENT
This section has been amended at the state or city level.
In structures where smoke and heat vents have been installed to comply with the requirements of the Fire Code, Chapter 9 Smoke and Heat Vents and Chapter 32 High Piled Storage, a 36 inch (914 mm) wide pathway to and around each vent shall be provided for fire department access, maintenance and testing of these vents.

3111.4.8.5 Electrical Component Location

AMENDMENT
This section has been amended at the state or city level.

3111.4.8.5.1

AMENDMENT
This section has been amended at the state or city level.
Disconnects, j-boxes, combiner boxes or gutters shall not be located in any required pathway or cutout.

3111.4.8.5.2

AMENDMENT
This section has been amended at the state or city level.
Raceways on flat roofs that cross a required pathway shall be bridged to avoid tripping hazards. Raceways shall not be permitted in required pathways on roofs with a slope that exceeds 2:12 (17-percent slope).

3111.4.9 Alternate Installations

AMENDMENT
This section has been amended at the state or city level.
In accordance with Section 104.11 of this code, an alternative material, design, location, method of construction, or means of safe fire fighter access and egress may be approved by the building official.

3111.5 Structural

AMENDMENT
This section has been amended at the state or city level.
Photovoltaic (PV) components, racking, support structures and attachments shall be in accordance with the provisions of this section.

3111.5.1 Module Attachment

AMENDMENT
This section has been amended at the state or city level.
PV modules shall be attached in accordance with the manufacturer's installation instructions and to account for all loads, including dead loads, snow loads, wind loads and seismic loads, as prescribed by this code.

3111.5.2 Racking

AMENDMENT
This section has been amended at the state or city level.
Racking shall comply with this section.

3111.5.2.1 Building Penetrations

AMENDMENT
This section has been amended at the state or city level.
All penetrations shall be flashed or sealed in a manner that prevents moisture from entering the wall and roof.

3111.5.2.2 Structural Support and Attachment

AMENDMENT
This section has been amended at the state or city level.
Racking and racking supports shall be positively attached to the structural components or blocking in accordance with this section. Racking and racking supports installed in accordance with manufacturer's specifications or be designed in accordance with this code and shall be mounted in accordance with one of the following:
  1. Installed in accordance with manufacturer's specifications and be designed in accordance with this code.
  2. Installed in accordance with Section 3111.5.3.
  3. Positively attached to the structural components or blocking through the use of screws, bolts, j-bolts, or other approved means. Such attachment shall not be accomplished by the use of toenails or nails subject to withdrawal. Racking and racking supports shall be mounted to structural components and shall not be attached to wall or roof coverings, trim or structural sheathing as a means of structural support.
  4. Attached to standing seam metal roofs with connectors in accordance with manufacturer's installation instructions.
  5. Certified non-penetrating or minimally penetrating systems installed in accordance with the manufacturer's installation instructions.

3111.5.2.3 Roof Mounted Racking

AMENDMENT
This section has been amended at the state or city level.
Roof-mounted supporting structures shall be certified in accordance with Section 3111.3.3, and shall be designed in accordance with accepted engineering practice, constructed and installed to safely support all loads, including dead loads, snow loads, wind loads and seismic loads as prescribed by this code and in accordance with Section 3111.5.3.

3111.5.2.4 Ground Mounted Racking

AMENDMENT
This section has been amended at the state or city level.
Groundmounted supporting structures, and all parts thereof, shall be designed, constructed and installed to safely support all loads, including dead loads, flood loads, snow loads, wind loads and seismic loads as prescribed by this code.

The bottom of modules shall be at least 18 inches (457 mm) clear from ground level.

3111.5.3 Prescriptive Installations

AMENDMENT
This section has been amended at the state or city level.
Roof installations on conventional light-frame construction which complies with this section shall qualify as prescriptive and shall not require an engineered design if all of the following criteria are met:
  1. Roof Structure: The supporting roof framing shall be conventional light framed wood construction with pre-engineered trusses or roof framing members at a spacing of 24 inch (610 mm) on center maximum that comply with the applicable allowable spans in Table 2308.7.2(1-6) for the specific loads including ground snow loads not exceeding 50 psf and wind loads that do not exceed Risk Category II, Ultimate Wind Speed of 120 mph [95 mph three-second gust in the Residential Code] in exposure C or Risk Category II, Ultimate Wind Speed of 135 mph [105 mph three-second gust in the Residential Code] in exposures A or B as defined in Section 1609 of this code. Where the grade cannot be verified it is assumed to be #2 Douglas-Fir Larch.

    Exception: Roof framing in compliance with the applicable allowable spans in Tables 2308.7.2(1-6) of this code and Tables R802.5.1(7-8) of the Residential Code for the specific loads including ground snow loads not exceeding 70 psf and wind exposure limited to exposure A, B or C shall satisfy the requirements of this section when the PV system is installed on;

    1. Detached one and two family dwellings and townhouses classified as Group R-3, and Group U Occupancies; and
    2. Residences used for family child care home or foster care in accordance with ORS Chapters 418, 443 and 657A; and
    3. Detached congregate living facilities (each accommodating 10 persons or less) and detached lodging houses containing not more than five guest rooms.
  2. Roof materials. Roofing material shall be metal, single layer wood shingle or shake, or not more than two layers of composition shingle.
  3. Loading: Installation shall comply with Figures 3111.5.3(1) and (2). The combined weight of the PV modules and racking shall not exceed 4.5 pounds per square foot (2.0412 kPa). PV modules or racking shall be directly attached to the roof framing or blocking. Attachments must be spaced no greater than 48 inches (1219 mm) on center in any direction. Attachments shall be spaced no greater than 24 inches (609.6 mm) on center in any direction where:
    1. Ground snow loads exceed 25 psf; or
    2. Located within 3 feet (91.44 cm) of a roof edge, hip, eave or ridge; or
    3. Wind exposure is B or greater and Risk Category II, Ultimate Wind Speed exceeds 120 mph [95 mph three-second gust in the Residential Code];
    4. Wind exposure is C or greater and Risk Category II, Ultimate Wind Speed exceeds 110 mph [85 mph three-second gust in the Residential Code].
    Exception: PV modules or racking may be attached directly to standing seam metal panels using clamps and roofing materials which meet the following:

    1. The allowable uplift capacity of clamps shall not be less than 115 pounds for clamps spaced at 60 inches (1525 mm) on center or less as measured along the seam or not be less than 75 pounds for clamps spaced at less than 48 inches (1219 mm) on center.
    2. Clamp spacing between seams shall not exceed 24-inches (610 mm). Spacing of clamps along a seam shall not exceed 60-inches.
    3. Roofing panels shall comply with all of the following:

      3.1 Shall be a minimum of 26 gage steel,

      3.2 Shall be a maximum of 18-inches (457 mm) in width,

      3.3 Shall be attached with a minimum of #10 screws at 24-inches (610 mm) on center,

      3.4 Shall be installed over minimum 1/2 -inch (12.7 mm) nominal wood structural panels attached to framing with 8d nails at 6- inches (153 mm) on center at panel edges and 12-inches (305 mm) on center field nailing.
  4. Height: Maximum module height above roof shall be 18 inches (457 mm) from top of module to roof surface and in accordance with Figures 3111.5.3(1) and (2).
  5. Submittal Requirement. See Chapter 1 for requirements.


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