Loading...
HomeMy WebLinkAboutPermit Field Test & Inspection Report 2000-9-19 ! " . l.~~;' Information ~.,. .To Build On Engineering. Consulting. Testing , September 19, 2000 'J-~'\~ L,-;'< ~/ ~ Mr. Tom WlrfS Cozy Homes 125 South 2nd Street Spnngfleld, Oregon 97477 Subject: Pad Completion Letter Ambleside Meadows - Lot # 29 Springfield, Oregon PSI Report No. 722-15026 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 native lean clay with sand, The subgrade was proofrolled with a fully loaded dual-axle dumptruck that weighed approximately 45,000 pounds, No deflection or rutting were observed under wheel loading, This result is indicative of a well-consolidated sOil structure Subsequent to proofrolling, the contractor placed approximately 6 Inches of % Inch minus crushed aggregate granular fill over the house pad area to achieve final grade and compacted the matenal 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 99 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 extenor grade Dunng 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 during 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 Spnngfield 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 pla,ced at the bottom of footing elevation and should Incorporate no less than % Inch of fall per foot of run I., ProfeSSional Service Industries, Inc. 1040A Shelley St . Springfield, OR 97477. Phone 541/746-9649. Fax 541/746-7163 ~ PSI Report No, 722.15026 Ambleside Meadows - Lot #29 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 Jaw-point drain. All crawl space areas should be covered with a visquesn mOisture barrier. The low-point drain should be lower than the elevation of the visqueen moisture barrier_ 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 questiol1s regarding this report, please feel free to contact Michael Dewey at 746-9649. Respectfully Submitted, PROFESSIONAL SERVICE INDUSTRIES, INC. ~PRO~~ ~' II 19206PE \"f' \~ ~YM.~ I EXPIRES; 6/30 0"'3 J Troy Hull, PE Senior Geotechnical Engineer ~