HomeMy WebLinkAboutPermit Field Test & Inspection Report 2000-9-19
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Engineering. Consulting. Testing
September 19, 2000
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Mr Tom WlrfS
Cozy Homes
125 South 2nd Street
Spnngfleld, Oregon 97477
Subject:
Pad Completion Letter~
Ambleside Meadows - ot # 6
Springfield, Oregon '
PSI Report No. 722-15028
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 26 to 31 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 pnor
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 vanous 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
exterior 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 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
perimeter 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 penmeter 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 Industnes, Inc .1040A Shelley St. Spnngfleld, OR 97477. Phone 541/746-9649. Fax 541/746-7163
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PSI Report No. 722-15028
Ambleslde Meadows - Lot #Ei5
Page 2
September 19.2001
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All crawl spaces should be provided with a low-point crawl space drain connected to the stann
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 vlsqueen 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 questions regarding this
report, please feel free to contact Michael Dewey at 746-9649.
Respectfully Submitted,
PROFESSIONAL SERVICE INDUSTRIES, INC.
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Troy Hull, PE
Senior Geotechnical Engineer