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HomeMy WebLinkAboutMiscellaneous Compliance Report 2011-8-29 (2) iFFliE fQ , " i-eUILDING . IQEPARTMENT. LLG Exterior Wall Envelope Self-Certification Form I, C-A-l(..~~ Co I\:S ~l.- -h'C^ owner-builder at the following address: 50_ to 7'Yk P/~ Street Address , Jr (1-1'1\3 ('~/d City . Dli37 . am the general contractor or the Permit# To conform to the 2008 Oregon Residential Specialty Code (ORSC), 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.] 'i - 1- i -{ f Date Revised: 2/8/2010 \ Excerpt from 2008 Oregon Residential Specialty Code Section R703, Exterior Covering: R703.l.l Exterior Wall Envelope. To promote builaing durability, the exterior wall envelope shall be installed in a manner that water that enters 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'l/8 inch space between the water-resistive barrier and the exterior veneer, and integrated flashings as required in R703.8. The required space shall be formed by the use of any non-corrodible furring strip, drainage mat or drainage board. The envelope shall provide proper integration of flashings with the water-resistive barrier, the space provided and the exterior veneer: These components, in conjunction, shall provide a means of draining water that enters the assembly to the exterior. Exceptions: 1. A space is not required where the exterior veneer is installed over a water-resistive barrier complying with section R703.2 which is manufactured in a manner to enhance drainage and meets the 75% drainage efficiency requirement of ASTM E2273 or other recognized 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 detailed within the construction documents and shall be of either a self-adhering membrane complying with AAMA 71H)7 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 75% drainage efficiency requirements of 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 water-resistant exterior wall envelope shall not be required over concrete or masonry . walls designed in accordance with Chapter 6 and flashed according to section R703.7 or R703.8. 6. Compliance with the requirements for a means of drainage, and the requirements of Section R703.2 and Section R703.8, shall not be required for an exterior wall envelope that has been demonstrated to resist wind-driven rain through testing of the exterior wall envelope, including joints, penetrations and intersections with dissimilar materials, in accordance with ASTM E 331 under the following conditions: 6.1. Exterior wall envelope test assemblies shall include at least one opening, one control joint, one wall/eave interface and one wall sill. All tested openings and penetrations . shall be representative of the intended end-use configuration. 6.2. Exterior wall envelope test assemblies shall be at least 4 feet by 8 feet in size. 6.3. Exterior wall assemblies shall be tested at a minimum differential pressure of 6.24 pounds per square foot. . 6.4. Exterior wall envelope assemblies shall be subjected to a minimum test exposure duration of 2 hours. The exterior wall envelope design shall be considered to resist wind-driven rain where the results of the testing indicate that water did not penetrate: control joints in the exterior wall enveiope; joints at the perimeter of openings penetration; or intersections of terminations with dissimilar materials.