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FOR DETACHED SINGLE FAMILY DWELLINGS (City of Beaverton)

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Form B70-1029 Page 1 of 14 REV 4/15
FOR DETACHED SINGLE FAMILY DWELLINGS
Building Permit No. ____________________ Plans Examiner ____________________
Project Name: _______________________________
Job Address: ________________________________ Suite: __________________________________
Contractor: _________________________________ Phone: _________________________________
I, ___________________________________, Oregon Construction Contractors Board No. ______certify
THE PROPOSED INSTALLATION COMPLIES WITH Section 3111 of the Oregon Structural Installation
Specialty Code (OSSC) and the following is true and defines the scope of work for this project:
a) All work complies with the current state adopted Oregon Structural Installation Specialty Code and the
authority having jurisdiction.
b) All alterations to the roof have been sealed in an appropriate manner.
c) Inspections shall be requested and approvals obtained for all installations. Requests can be made at (503)
526-2400 or on line at www.beavertonoregon.gov/scheduleinspection.
Under the provisions of Section 105.2; construction documents shall not be required when an applicant
has demonstrated, on a form approved by the Building Official, that a proposed installation complies with
the requirements of Sections 3111.1 of the Structural Specialty Code.
Fire Fighter Access and Escape:
Section 3111.4.8 Fire Fighter Access and Escape. To provide access and
escape for Fire Fighters the location of roof-mounted PV modules shall comply
with the requirements of this section.
Section 3111.4.8.1 General Pathway Requirements. 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. To be provided.
Exception:
1. On structures with a PV array area of 1,000 square feet (92.9 m
2
) 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:
Meets exception
Does not apply
1.1. Where the PV array does not exceed 25% as measured in plan view of
total roof area of the structure, a minimum 12 inch (305 mm) unobstructed
pathway, shall be maintained along each side of any horizontal ridge.
Will be provided
Does not apply
CITY OF BEAVERTON
Community Development Department
Building Division
12725 SW Millikan Way / PO Box 4755
Beaverton, OR 97076
Phone: (503) 526-2493 Fax: (503) 526-2550
General Information (503) 526-2222
BeavertonOregon.gov
PRESCRIPTIVE SOLAR PHOTOVOLTAIC SYSTEM INSTALLATION AFFIDAVIT
Form B70-1029 Page 2 of 14 REV 4/15
1.2. 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.
Will be provided
Does not apply
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 townhomes are separated by real
property lines and pathways cross real property lines this affidavit may not be
used.
Will be provided
Does not apply
Does not apply
3111.4.8.2 Intermediate Pathway Locations.
Systems that include a solar array section that is larger than 150 feet (45 720 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 (45 720 mm) of array including offset modules
or angled installations. The maximum square footage of an array shall not exceed
22,500 ft
2
. (2090 m
2
) without the installation of intermediate pathway.
Will be provided
Does not apply
3111.4.8.2.1 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.
Will be provided
Does not apply
3111.4.8.3 Prohibited Locations. Pathways shall not be located within 12 inches of
the low point of a valley.
Design complies
Does not apply
3111.4.8.5.12 Electrical Component Location.
3111.4.2.5.1 Disconnects, j-boxes, combiner boxes or gutters shall not be located in
any required pathway or cutout.
Design complies
Does not apply
3111.4.2.5.2 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).
Design complies
Does not apply
3111.5.3 Prescriptive Installations. 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 inches (610 mm) on center maximum that comply with the
applicable allowable span in Table 2308.8.2 (1&2) for the specific loads
including ground snow loads not exceeding 50 psf and wind loads that do not
exceed 95 mph in exposure C or 105 mph in exposures A or B as defined in
1609 of the Building Code. Where the grade cannot be verified it is assumed to
be #2 Douglas-Fir Larch.
Pre-engineered trusses
spaced at 24” oc
maximum
Stick framed. Provide
copy of span table
Form B70-1029 Page 3 of 14 REV 4/15
Exception: Roof framing in compliance with the applicable allowable span in
Table 2308.7.2 (1&2) for the specific loads including ground snow loads not
exceeding 70 psf and wind exposure is limited to exposure A, B or C shall
satisfy the requirements of this section when the PV system is install on;
1. Detached one and two family dwelling, Townhomes 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.
2. Roof materials. Roofing material shall be metal, single layer wood shingle or
shake, or not more than two layers of composition shingle.
Design complies
3. Loading: Installation shall comply with Figure 3111.5.3(1) & (2). The combined
weight of the PV modules and racking shall not exceed 4.5 pounds per square
foot (2.0412kPa). 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:
Design complies
3.1. Ground snow loads exceed 25 psf;
Design complies
3.2. Located within 3 feet (91.44 cm) of a roof edge, hip, eave or ridge; or
Design complies
3.3. Wind exposure is B or greater and wind speed 95 mph or more or wind
exposure is exposure C and wind speed is 85 mph or more.
Exception: PV modules or racking may be attached directly to standing
seam metal panels using clamps and roofing materials which meet the
following:
Design complies
1. The allowable uplift capacity of clamps shall not be less than 115 pound
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.
Design complies
Does not apply
2. Clamp spacing between or along seams shall not be less than 24-
inches (610 mm). Spacing of clamps along a seam shall not exceed 60-
inches.
Design complies
Does not apply
3. Roofing panels shall comply with all of the following:
3.1. Shall be a minimum of 26 gage steel,
Design complies
Does not apply
3.2. Shall be a maximum of 18 inches (457 mm) in width,
Design complies
Does not apply
3.3. Shall be attached with a minimum of #10 screws at 24 inches (610
mm) on center,
Design complies
Does not apply
3.4. Shall be installed over minimum ½-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.
Design complies
Does not apply
4. Height: Maximum module height above roof shall be 18 inches (457 mm) from
top of module to roof surface and in accordance with Figure. 3111.5.3(1).
Design complies
Does not apply
Form B70-1029 Page 4 of 14 REV 4/15
In addition, I understand the following items are required to be provided with this affidavit in order
to obtain my permit:
Site plan which contains all of the information shown on the example site plan attached to this
document.
Rafter size: ____ X ____ inches spaced at _______on center. The maximum allowed span is ____ ft.
______inches. Plans examiner to validate allowed span. (Not required when engineered trusses).
Cut sheets for the solar panels that indicate they comply with UL 1703.
A copy of this document shall be available for the authority having jurisdiction at inspection.
Photovoltaic system has a ________________kW.
A completed Building Permit application.
A copy of all the applicable information shall be available on the job site for all inspections.
Signature: _______________________________________________________ Date: _____________
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FOR DETACHED SINGLE FAMILY DWELLINGS (City of Beaverton)

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Completed 2 August 2020

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