HomeMy WebLinkAboutPermit Field Test & Inspection Report 2003-10-19
OCT-19-2003 11 4iP FRO~
TO 15416876020
P 4/4
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RonakJ J. Derrick, P E.
~20 NW lWa1fme Avenue
COIVaU,., Oregon 97330
Ph. 541-1113-0220
m. ~1-751J.856S
October 19, 2003
GrassRoots Thinking Inc.
1135 eal Young Road
Eugene, Oregon 91401
RE; Aggregate Compaction Evaluation
901 So '1~ Street
Springfiefd, Oregon
Mark Callaway Residence
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A geotechnical engineer VISIted the subject slte to asseS$ the overexcavatlon conditions of the
budchng pad and compadlon of the aggregate 1111. The 4-$tep budding pad had been cut mto
nstrlfe residual basalt sod on a North-we5terty-faclng slope A 7-foot hIgh near vertical cut eXists
In the southeast comer of the building pad and thEJ average depth of overexcavMlon IS about 3
feet The building pad steps are 6..tnxhes to 3--feet In hetgh1 The pads haw been covered with
6- to 10-Inehes of %"-0 aggregate from Spnngfleld Quarry, WIth greeter fiU depths In areas of '
tree stump removal Based on site testing and probing the aggregate has been compacted ~
at least 95% of th~ ma1enals maxImum dry density as deterrmned by AASHTO T-99 method
The subgrade and aggregate fill are suitable for an allowable beanng capacity LIP to 1,SOO psf
and oorwentlOnal reSidential style footing construebon
We recommend that all footings bo reinforced wdh at least two #4 steel reinforcing bars. and
that surface water be dlrected away from the foundl:rtJons and not allowed to pond adJacent to
footings Footing drains are recommended on the up slope side of the footings end surface
water ShOUld be dIrected around the bUilding pad
Sincerely,
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Ronald J Demel<. P E