HomeMy WebLinkAboutMiscellaneous Compliance Report 2010-10-11 (2)
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'I~UILDING
IIDEPARTMENT. LLC
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Exterior Wall Envelope
S'elf-Certification Forrn
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owner-buil er at the following address:
. am the general contractor or the
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Street Address
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City
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Perm it# I
To conform to the 2008 Oregon Residential Specialty Code (ORSq, Section
R703.1.1, I am notifying the building official that I am aware of the exterior wall
envelope requirements of R703.1.1, and hereby certify that the components of
the exterior wall envelope have been installed in accordance with the code
requirements. [Section R703.1.1 is provided for reference on the reverse side of
this form.]
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Signature
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Date
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Revised: 2/8/2010
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Excerpt from 2008 Oregon Residential Specialty Code Section R703, Exterior Covering:
R703.1.1 Exterior Wall Envelope. To pro~t~ builCling durability, the exterior wall envelope shall
be installed in a manner that water that e~;I the assembly can drain to the exterior. The envelope
shall consist of an exterior veneer, a water-resistive barrier as required in R703.2, a minimum 1/8
inch space between the water-resistive barrier and the exterior veneer, and integrated flashings as
required in R703.8. Th~ required space shall be formed by the use of any no~,-corrodible, furring. ,
strip, drainage mat or drainage board. The envelope shall provide prqperjntegration of. flashings,. "\
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with the water-resistive barrier, the space provided and the exterioryeneer. These components, in
conjunction, shall provide a means of draining water that enters the assembly to the exterior.
Exceptions: t.1; -:: .;{,\":",,, .\ ' ... ., ~. ~ ..
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1. A space is not required where ,the exterior veneer is installed'i')er a water-resistive barrier
cpmplying with section R703.2 which is manufactured in a m~nner to enhance drainage and
meets the 75% drainage efficiency requirement of ASTM,Ei27.3 or other. recognized " . " .
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., national standards. . . " \ " '
2. A space is not required where window sills are equipped with pan flashings which drain to
the exterior surface of the veneer in a through wall fashion: All pan flashings'shall be
deta'i1ed within the construction documents and shall be of either a self-adhe(ing" "
membrane complying with AAMA 711-07 or of an approved corrosion-resistant material or
a combination thereof. Self-adhering membranes extending to the exterior surface of the
veneer shall be concealed with trims or other measures to protect from sunlight.
3. A space is not required where the exterior veneer is manufactured in a manner to enhance
drainage and meets the 7S% drainage efficiency requirements df ASTM E2273 or other
recognized national standards and is installed over a water resistive barrier complying with
section R703.2.
4. A space is not required where the exterior veneer is matching.an existing exterior finish as
in additions, alterations, or repairs. .
5. A wateHesistant exterior wall envelope shall not be required over concrete or masonry
walls designed in accordance with Chapter.6;and flashed a~cordin~.to section R703.7 or
R703.8. _ "..
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6. Compliance with the requirements for a means of drainage, and the requirements of
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Section R703.2 and Section R703.8, shall not be required f()r an exterior wall envelope:that
has been demonstrated to resist wind-driven rain through testing of the;exte,lor wall .
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envelope, including joints, penetrations and intersections with dissimilar materials, in
accordance with ASTM E 331 under the following conditions: :
6.1. Exteriorwall envelope test assemblies shall include at least one ope~ing, ~ne cO,!lrol
joint, one wall/eave interface and one wall sill. All tested openings .rnd penetrations'
shall be representative of the intended end-use configuration.
Exterior wall envelope test assemblies shall be at least 4 feet by 8 feet in size.
Exterior wall assemblies shall be tested at a minimum differential pressure of 6.24
pounds per sq~are foot. '"
6.4. Exterior wall envelope assemblies shall be subjected to a minimum test exposure
'd,uration of 2 hours. ,
The ex~erior wall envelope design shall be considered to r~~!~t ~!fld~driven rain where.the
results of the testing indicate that water did not penetrate: control joints in the exterior
wall envelope; joints at the perimeter of openings penetration; or intersections of
terminations with dissimilar materials.
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6.2.
6.3.
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