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HomeMy WebLinkAboutPermit Field Test & Inspection Report 2000-9-19 . l.}!!:-' Information ~..,. .TO Build On Engineering. Consulting. Testing September 19, 2000 q,"u ?~ ,~5~ vJ Mr Tom WlrfS Cozy Homes 125 South 2nd Street Springfield, Oregon 97477 Subject: Pad Completion Letter Ambleside Meadowsr.:Lot #~ Springfield, Oregon '-:=- - PSI Report No. 722-15027 \ \ Dear Mr. WlrfS: Professional Service Industries, Inc, (PSI) IS pleased to submit this letter for the completed house pad subgrade evaluation at the above referenced lot The foundation subgrade sOils within the house pad area were visually classified as fat clay with sand MOisture content tests were taken at various locations throughout the house pad The mOisture contents test results ranged from 25 to 28 percent Based on prevIous testing performed on this sOil type, the . mOisture content tests taken are acceptable for this type of potentially expansive sOil The contractor placed approxImately 12 Inches of compacted 3 Inch minus crushed rock prior to placement of approximately 6 Inches of compacted % inch minus crushed aggregate granular fill over the house pad area to achieve final grade, Compaction testing was performed on the finished grade of the crushed aggregate, granular fill In various locations within the house pad excavation The test results ranged from 96 to 100 percent of the theoretical maximum dry density as determined by ASTM 01557, . Foundations exposed to weather should be embedded at least 12 Inches below the adjacent exterior grade During foundation construction, water should not be allowed to collect In foundation excavations, on floor slab areas, or on prepared subgrades of the construction area either dunng or after construction Undercut or excavated areas should be sloped toward one corner to facilitate removal of any collected rainwater, groundwater, or surface runoff Positive site drainage should be provided to reduce Infiltration of surface water around the penmeter of the house and beneath the floor slabs The permanent grades should be significantly sloped away from the house bUilding areas and surface drainage should be collected and discharged such that water IS not permitted to Infiltrate the backfill and floor slab areas of the resIdence. Additionally, in order to comply with City of Springfield requirements for construction Within the Ambleslde Meadows SubdiVision, a continuous perimeter foundation drain system should be Installed at the time of the foundation construction The foundation drain system should be placed at the bottom of footing elevation and should Incorporate no less than % Inch of fall per foot of run ProfeSSional Service Industries, Inc. 1040A Shelley St . Springfield, OR 97477. Phone 541/746-9649. Fax 541/746-7163 . PSI Report No. 722-15027 Ambleside Meadows - Lot #64 Page 2 September 19,2001 ~ All crawl spaces should be provided with a low.point crawl space drain connected to the storm sewer or approved disposal system (outlet). All areas of the crawl space should be graded to drain to the low-point drain. All crawl space areas should be covered with a visqueen moisture barrier. The low-point drain should be lower than the elevation of the visqueen moisture bamer. Based upon our observations, the house pad subgrade has been constructed in general accordance with industry standards for lightly loaded (1,500 pounds per square foot or less) foundation loads typical for this type of construction. If you have any questions regarding this report, please feel free to contact Michael Dewey at 746-9649 Respectfully Submitted, PROFESSIONAL SERVICE INDUSTRIES, INC. Michael Dewey, G Staff GeOlogist ,~~ ~?jEfDl~ ~l'15, ~ ~'fM.~ , EXPIRES; 6/30 _ ~ 1 - J Troy Hull, PE Semor Geotechnical Engineer