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Home My WebLink AboutPermit Field Test & Inspection Report 2007-10-18 :<. Or,[,18 2007 10:56AM '.J-._ No,2133 p, 1 c3 K & A Engineering, Inc. 3327 Roanoke Ave., Eugene, OR 97408 (541) 684-9399 Voice (541) 684-9358 FAX enginl?ll'ring Fax Fax: "Tim - Hayden 741-2572 i Jasper Meadow,s -lot 205 From: Marvis Rembold! To: 4 Subject: Pages: Dale: October 18, 2007 Hi TIm, Attached is the letter that you requested for lot 205. Please call ~ you have any questions, Sincerely, ,,~ , ~. MaNis M, Rembold! ~8flT - K & A Engineering, Ine, Business Manager fort- 57~3 UAl~,l~ \ tIff ~()J J~/- jlfJJI?t ~ t7"" /57) ~~ 1fJ \ 4fi I~~d~ \ ,> r- ~ .i, I - .~~ . 0,1. 18, 2007 10:56AM No,2133 p, 2 -a l?nginl?ering K & A Engineering, Inc. 3327 Roanoke Ave., Eugene, OR 97408 (541) 684.9399 Voice (541) 684-9358 FAX February 23, 2007 Hayden Enterprises, Inc, 2464 SW Glacier Drive #110 . Redmond, OR 97756 ' Project: 151.06 Subject: Jasper Meadows subdivision..Lot 205 Springfield, OR I Foundation Soils PURPOSE AND SCOPE At your request, K & A Engineering, Inc, has completed a geotechnical investigation of the existing soils on the subject properly. Our understanding is that a wood-framed single-family residence supported by a cast-in- place concrete spread footing foundation is proposed for construction on this site, I I The purpose of our investigation was to determine the suitabilrty of the soils for construction Of the proposed structure, and provide recommendations for construction of the foundation The scope of our services is limrted to general suitability with respect to bearing capacity and expansive soils I I FOUNDATION PAD PREPARATION , The project site is located on a residential lot on the south side of Cinder St in the new' Jasper Meadows" , subdivision, The lot is level and there are no apparent slope movement hazards. The site is in a tradrtionally . low-lying area that is being raised to a level even wrth the surrounding subdivision. Based on the foundation P~d excavation, soils consist of approximately 1 O-inches of dark brown, loose, organic silts, over 12-inches of wet. gray, plastic silts, over saturated, moderately stiff, decomposed sandstone, There are also some pockets of fill from the subdivision road and utility construction, , ! Foundation preparation involved construcUog a level foundation pad on native undisturbed soils. This required stripping and removing approximately 22.inches of loose silts and undocumented fill in the foundation pad area. After the excavation and reinoval of the unsuitable soils, approximately 24 to 36-inches of 8-inch minus crushed quarry 'prt run" was placed and compacted on the foundation pad area, followed by 12-inches of %-inch minus dense graded crushed aggregate, This served to provide a uniform surface for footing construction. The fill materials were placed in m'aximum lifts of 12-inches and compacted using a vibratory steel drum roller. We inspected the foundation p~d excavation, prior to placement of the granular fills, . I We inspected the Placemeht of the a-inch minus crushed quarry 'pit-run' and the %-inch minus dense-graded crushed aggregate, The .pit-run' was too large to test for maximum dry density and optimum water content by , conventional laboratory testing, therefore, adequate compaction was detef1"l1ined in the field by visual inspection I , ~'r.....' Oct. 18. 2007 IO:56AM , . No,2133 P 3 K & A Engineering, Inc. i , ! of the compaction effort, l11e "pit-run' was placed in 12-inch maximum lifts and compacted with a vibratory steel drum roller. We tested the in-place density of the crushed aggregate fill and have detenmined that the average dry density exceeds 95% of maximum as detenmined by ASTM D69S, The field test results are attached to this report, I SUMMARY AND RECOMMENDATIONS The project site, as ~repar~d, is su~able to support the proposed foundations We recommend a design allowable bearing capacit~ of 2,500-pounds per square foot: The soils present; mOder1te shrinjqswell hazard, Foundation loads should bear on undisturbed native silts a minimum depth of 36-inches below final grade around the perimeter foundation, The prepared foundation pad meets these requirements! , I Final grading around the fdundation pad should raise the grade above the foundatlon using native or imported silts and should slope away from the foundation, I , We recommend approvallof the foundation pad, as constructed, by the building official. . Thank .you for the opportunity to be of service, Please call us if you have ques1ions or need further assistance, Respectfully, "~-" / .' P- ! ! I i i I I ! I I I I EXPIRES Steve Schultz, EJT. K & A Engineering, Inc, , Client: Hayden EnterpriSes! Jasper Meadows-l.ot 205, Springfield, OR Project: 151.06 ! Page 2 of 2 February 23, 2007 ",' : ,.oJ!. 18, 2007 10:56AM No,2133 p, 4 Density of Soil and Soil-Aggregates In-Place ASTM D2922 and D3017 I ProJect: 151.06 I Site Address: Jasper Meadows-.Lot205 I I Permit No: - 1 Oate: 2/28/2007 I DensitY Test Type':IDT-6 1 I Operator:ISS I Material Type:13/4" (-l from SorinQfield Quarry I Maximum OryJOenstiy, ocf1128.0 I Slandardization and Reference Chec~'" Density /.0. Moisture, I (Slandard Deviations) (S.O,) 0,9 (S,D:) 0,38 Moist Dry , Density., Density, Watet Compaction, Test No. pci pel Conten~ % % Remarks 1 1 131.2 I 122.6 I 7,0 958% I 2 132,7 II 122,7. I 8,2 ,-- 95,9% I I 3 1345 II 124,9 I 7.7 , 97,6% I I II I I I I 'I I I I I I 1 I I I I I I I I I I I I I I 1 I I I I I I , I I I 'I I I I , I I I - 1 I -, I I I I I I I I I I I I I I --I I .1 I I I .- I I I I I I I I I I I I I I Average: 96.4% Std. Dev,: 1.02% 1 Direct Transmission (DT) (specify depth, in,) or Air Gap Backscatter (AGS) (specifiy(T)ouchabJe or (U)ntouchable mode . Test pertormed using Seaman Nuclear Corp model C-300. SN 21113 Client Hayden Enterprises, Inc, Project: 151,06 K & A Engineering, Inc, 3/1/2007