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HomeMy WebLinkAboutPermit Field Test & Inspection Report 2008-4-23 .... ......;.. .a engineering K & A Engineering, Inc. 3327 Roanoke Ave., Eugene, OR 97408 (541) 684-9399 Voice (541) 684-9358 FAX April 23, 2008 Project: 42.06 Mr. Duane Knights 2258 33'd St. Springfield, OR 97477 Subject: Foundation pad inspection Springfield permit no, COM2006-00115 6263/6265. Aster St., Springfield, Oregon PURPOSE AND SCOPE As requested, we have inspected foundation support for an exterior deck located at the rear of the west unit of recently constructed 2-story duplex at the subject project site. The purpose of our inspection was to determine the suitability of the deck support system, as it has been constructed, and make recommendations for modifications, if deemed necessary. The scope of our services included a site inspection and this report, SITE INSPECTION The deck, as constructed at the time of our inspection, consists of 2x6 joists spanning approximately 12-feet, extending from the south perimeter wall of the building. The deck is supported at the building wall by a wood ledger and is supported at near mid-span and the south end by 4x4 posts that extend to the masonry face of two retaining walls (the face of one wall supports the mid-span posts, and the face of the south wall supports the south end of the deck). At least four posts support the mid-span. The base of the posts are attached to the segmental masonry wall facing using post bases that appear to be anchored to the masonry and nailed to the posts. RECOMMENDATIONS The existing deck support, as constructed, is unconventional but, in our opinion, is stable and will provide the necessary support. . Due to the redundancy of support members, the low ioads, and the stability of the retaining walls, there is no significant safety hazard and the retaining wall facing will provide the support required. We recommend that the deck suooort be acceoted bv the local huildinp oNicial. ---- We recommend inspection of the retaining wall on a semi-annual basis to ensure that the masonry of the lower. retaining wall is uniform and has not been dislodged. To reduce construction and maintenance costs, we recommend that an alternative deck structure and foundation support system be considered for future decks on this building and the proposed building to the east. This system could consist of a deck constructed with slightly larger joists that cantilever over one support beam ,........... K & A Engineering, Inc. located over the toe of the upper wall. The support beam would be supported by posts and isolated spread footings constructed at the toe of the upper wall and well behind the top face of the lower wall. . Thank you for the opportunity to be of service. Please call us if you have questions or need further assistance. Sincerely, EXPIRES Ii 11/~ I( Michael Remboldt, P.E. K & A Engineering, Inc. Project: 42.06 Client: Knights 6263/6265 Aster St., Springfield, Oregon Page 2 of 2 April 23, 2008