4937 SEA BREEZE WAY 2017-01-13 - Laserfiche WebLink

• August 13`'', 2015 Mark Pepe 2572 Point Marine drive Henderson, NV 98044 Re: Shoring Wall Condition Survey Report 4937 Seabreeze Way Everett WA 98203 Mark: • 180 Nickerson St. Suite 302 Seattle, WA 98109 (206) 285-4512(� (206) 285-0618(F) bmccann@ctengineering. c om We were commissioned by you to attend the site Wednesday, June 10"', 2015 and undertake a visual structural inspection to comment on the structural condition of the shoring wall as well as the house located at 4937 Seabreeze Way, Everett WA. This report provides an evaluation of the structural condition of the existing shoring wall to comply with item #8 of Everett Public Works correction notice dated August 3"', 2015. We were provided with the following documents to assist us with our review of the shoring wall: • Meta Engineering shoring wall construction documents dated July 5`h, 1993 — two sheets. • Geotechnical Engineering Evaluation by Nelson Geotechnical Associates, Inc. Dated April 27"', 2015. • Photos of test pits provided by Nelson Geotechnical Associates, Inc. The shoring wall consists of twenty-six wide flange soldier piles spaced roughly six feet on-center, encased in two foot diameter augered holes back filled with lean concrete. Nine soldier piles are cantilevered, and the remaining soldier piles are anchored via assumed "Williams stress rods" to concrete dead men located roughly fifteen feet behind the soldier piles. The stress rods are located roughly five feet from fnish grade. Lagging consists of a proprietary product "duralagg" consisting of reinforced concrete "C" sections encased by plastic. The scope of our investigation included reviewing the documents listed above as well as visiting the site. CT Engineering was not on site when test pits were dug by Nelson Geotechnical Associates, although photos of the excavated pits have been provided for our review. These photos clearly show that the "Williams stress rods" have failed at either the soldier pile or dead men attachment points. SUMMARY OF STRUCTURAL FINDINGS After reviewing the construction documents and photos, as well as visiting the site, it is our opinion that the outward movement of the soldier piles is largely due to the failure due to corrosion of the "William Stress rods". We do not have reason to suspect a deficient design so our remedial approach does not constitute a re-design, but repair to a strength level equivalent to the original design. Page � 1 /� l