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HomeMy WebLinkAboutTract Map 9833 Lot 224 Rough Grade Compaction ---~~ \....oT 2.?A T~+ qeS~ ?::C55\0 AVcNU::A. ks\R~A. \l::::'~. c.f.-. \!2.?-!Ql RECEIVED S~ \-~Ov~v~ ~,,0l&rMQ<' ~\~-to O~~~~\ 0Jv~ CMV-,B . -V-e> . ", ~ ~. ~~~ S:~~~ JAN 221997 CITY OF TEMECULA ENGINEERING DEPARTMENl \ I I I I I I I I I I I I I I I I I I I ROUGH GRADE COMPACTION REPORT PROPOSED SINGLE FAMILY RESIDENCE LOT 224. TRACT 9883 30518 AVENIDA ESTRADA TEMECULA. COUNTY OF RIVERSIDE. CA FOR CHARLES AND ELIZABETH WRIGHT PROJECT NO. 96-059.COM DATED SEPTEMBER 19. 1996 '0 Lakeshore Engineering I I I I I I I I I I I I I II I I I I I LAKESHORE En;gineering C.onsulting Civil Engineering and Geologists Client: Subject: September 19, 1996 Project No: 96-059.COM Charles and Elizabeth Wright P.O. Box. 1225 Temecula, CA 92593 (909) 695-3690 Compaction Testing Report Proposed Single Family Residence Lot 224, Tract 9883 30518 Avenida Estrada, Temecula, CA 92591 A.P.N. 919-161-005 Reference: Soil and Foundation Report Dated July 30, 1996 P.N. 95-059.PI Gentlemen: INTRODUCTION This is to report the results of tests and observations made during the p~acement of compacted fill on the subject site. Periodic tests and observations were provided by a representative of Lakeshore Engineering to check the grading contractors on compliance with the drawing and job specifications. The presence of our field representative at the site was to provide to the owner a source of professional advice, opinions and recommendations based upon the field representative's observations of the contractor's work and did not include any supervision, superintending or direction of the actual work of the contractors or the contractor's workmen. The opinions and recommendations presented hereafter are based on our tests and observations of the grading procedures used, and represent our engineering judgment as to the contractor's compliance with the job specifications. BACKGROUND INFORMATION The subject lot is one of the few remaining unimproved lots in the community of Meadowview, just to the east of old town Temecula. Each property is individually designed and custom built, upper scale houses. A ,soil and foundation investigation report was recently prepared for the subject lot with our findings, conclusions and recommendations presented in the above referenced report. 3 31606 Railroad Can.yon Road, #201 . Canyon Lake, CA 92587 . (909) 244-2913 . FAX: (909) 244-2987 I tOeA TION MAP " T~.IMAj>&.lc.. P~. \I~ ,'''11.. &1m D1J. ,LAK:ESHORE Engineering MR. AND MRS. WRIGHT 30518 AVE. ESTRADA TEMECULA, CA Plcject No: 96-059.COM Da18 9n9/96 CONSULTING CIVIL ENGINEERS N N.T.S. " A. FIgure No: 1 I I I I I I I I I I I I I I I I I I I September 19, 1996 Project No. : 96-059.PI.COM Page Two PROPOSED DEVELOPMENT The proposed development will consist of a one and/or two story single family residences of conventional construction, placed at grade with driveway and front and rear yard/landscaping. Foundation plans were made available by our client, Mr. Wright and the grading plan for the site was prepared by Venture Engineering, at a scale of 1" = 20'. The lot was rough graded per approved grading plan. The building pad was graded with a transitional cut/fill situation at approximately street grade. Proposed leach field areas will be in native soils located in the front and ,back of the house, with the septic tank towards the westerly side. GRADING OBSERVATION AND TESTING The rough grading operation was observed to be performed in the following manner: l. Vegetation, surface trash and miscellaneous debris were cleared from the areas to be graded. 2. 'Unsatisfactory soils were excavated to expose competent materials on which to start the fill. The maximum depth of fills placed was approximately 10 feet located at the top of the westerly facing fill slope. 3. ,A keyway approximately 12 feet in width and 3 feet in depth, cut into and along the outer edge of the existing toe of slope. The ,keyway was inspected and found to be excavated into competent dense soil. 4. The native soils exposed at the bottom of excavation were inspected and are in our opinion, suitable for support of compacted fill. 5. Approved soils were placed in layers on the prepared surface, and each layer was compacted to the specified density before the next layer was added. 6. The minimum acceptable degree of compaction content was 90 percent of the maximum dry density. 7. Maximum density and optimum moisture content were determined by the A.S.T.M. D1557-78 method. /' ::> Lakeshore Engineering I I I I I I I I I I I I I I I I I I I September 19, 1996 Project No.: 95-059.COM Page Three 8. Field density tests were performed utilizing the sandcone method (A.S.T.M. D1556) and the drive tube method. 9. The soils used in the compacted fill consisted predominantly of import Silty Fine Sand and onsite SAND (residuum). 10. The transitional cut portion of building pad was overexcavated and recompacted to provide for a uniform subgrade fill blanket. The rework consisted of removal of the upper 36 inches and scarification of the lower 12 inches. Field density 'tests were made during the placement of fill to determine the degree of compaction and moisture content. All field density tests ar,e listed in the "Summary of Field Density Tests", and their approximate locations are shown on Figure No.1. Also shown are the limits of the compacted fill placed during this grading operation. , GRADING DEVIATIONS FROM PLANS Near the conclusion of rough grading, the following rough grading changes were observed on the subject site: 1) No major deviations were observed in the field when compared to the approved grading plan. Pad grade was established and slopes tracked. However, there are excess stockpile import fills (approximately 100 yards) remaining on the lot that will require removal from building pad. LABORATORY TEST PROCEDURES AND COMPACTION TESTING Soil samples obtained from the field were visually identified and when necessary, additional laboratory testing was performed to confirm identification. All soils were classified with the Unified Soil Classifications System. The procedures outlined in A.S.T.M. Method D1557-78 were used to determine the compaction characteristics of the fill materials. The results of our laboratory compaction tests are presented below: Soil Tvoe Soil Description Optimum Moisture Max. Dry Density A SAND (D.G.) (Native) 8.0 l32.5 B Sil ty SAND (Import) 9.0 130.5 Cg Lakeshore Engineering I I I I I I I I I I I I I ~ I I I I I I September 19, 1996 Project No.: 96-059.COM Page Four Laboratory Expansion Test A! Laboratory :Expansion Index Test was performed on a representative soil sample recovered from within the proposed building area at the subject site. 'The laboratory expansion test was performed in accordance with U.B.C. Test Method 29-C, and the pertinent test results are presented below: Soil Description Moisture % Before Test Expan. Index Expansion Potential Depth Si!lty SAND IMPORT 8.4 < 22 LOW Based upon a test result of 22, subgrade materials are considered to be LOW in expansion potential. It is recommended that the appropriate guidelines under "Suggested Guidelines for Design of Foundation/Slab S~stems" be incorporated into the design and construction phases of the project. CONCLUSION AND RECOMMENDATIONS Based on the final results of the tests, on observations of the construction procedures used in the field and on our experience, it is our opinion that the compacted fill shown on Figure No. 1 has been pl'aced in accordance with the applicable portions of the job specifications. Any fill added beyond the limits or above the grades shown should be placed under engineering control and in accordance with the specifications, if it is to be covered by the recommendations herein and the reference report. Based upon our field testing results, the compacted fill in our opinion has been compacted to at least 90 percent relative density. The on-site foundation soils exposed during rough grading are granular and therefore considered LOW in expansion potential as verified in the laboratory test results. Foundation should be constructed in accordance with the attached guidelines. Footings should be 12" by 12" minimum. For two story structures, footings shall be a minimum of 15 inches in width by 18 inches in depth reinforced with one no.4 bar at top and one at 3" from bottom. CONSTRUCTED SLOPE Cut and fill slopes were constructed with inclination and heights as per grading plan. Based on our past experience in working with this kind of soil in the Meadowview area, it is Lakeshore Engineering's opinion that the proposed cut and fill slope will be grossly and surficially stable as constructed. Lakeshore Engineering 1 I I I I I I I I I I I I I I I I I II I September 19, 1996 Project No.: 96-059.COM ,Page Five : SURFACE DRAINAGE Positive drainage should be provided around the perimeter of all structures to :minimize water infiltrating into the underlying soils. The homeowner should be made aware of the potential problems which may develop when drainage is altered through construction of future retaining walls, patios and pools. Ponded water, leaking irrigation systems, overwatering or other conditions which could lead to ground saturation especially under footings must be avoided. IFOOTING INSPECTION Due to periodic inspections and the transitional cut/fill pad condition left inplaced, footing excavations should be inspected by a representative of Lakeshore Engineering prior to concrete placement to verify proper ,embeddment entirely into competent soils. Deepen footings will be required for footings close to and/or over edge of slopes. A minimum distance of 7 foot to slope face (dayl ight) condition is required. At the time of the preparation of this report, only a single family residence is proposed at this time. Any future appurtenance structure such as a detached garage, office, barn, patio, spas or pools, etc., should be reviewed for subgrade suitability prior to construction. Our findings have been ,professional engineering engineering. This warranty ,express or implied. obtained in accordance with accepted practices in the fields of geotechnical is in lieu of all other warranties, either Re~pectfully Submitted, LAKE SHORE ENGINEERING ong, P.E 7442 6/30/2000 FY/fy Enclosed: 1) SUGGESTED FOUNDATION GUIDELINES 2) PLOT PLAN 3) SUMMARY OF FIELD DENSITY TEST RESULTS 4) SLOPE EROSION GUIDELINES ~ Lakeshore Engineering I SUMMARY OF FIELD DENSLTY TFST~ 1sT FIELD ~ ~~ DATE ELEVA REFER- MAXIMUM a~ OF T I ON ErlCE DRY \iA'iER DRY ~ ,,<'" ,,-.; w LOCATIOU \: "-'"to" IU11ARKS @~ NO. TEST (feet) CURVE DENS ITY C OiHENT DEr~S!TY ~'t-",,~ . (pd) , (~) (pcf) Q;.'..; "c:J : ~E j 19-/.3,1 Kf.:::i lovfl~ . -2 A 132-S 70 IU'S q:s 1/ 'a , Z ICI"~ kDn-v ~ FI LLS, tl 6 13c'~ &-3 i17.7 tiCI V 13 it h " tl II II &.'1- 117.8 qD il 11 Ii II t3 II 11 8.j 11l3.6 ql I , I IS- R.lf., b il - II. z. $5'6 I SL::,-fE. Ft u...> 'i'~ II ill.1- lib ~l /1 -+s II I, jD-L. 117,0 qo ~&~i)'fS I - ,7 (II 11 +;;; /1 11 0;./ /16 ''7 ql) / I~ 11 1/ -+7 11 '" q,o il8 'S; ~H I v' 1/ 17 VI , It gr /17-7 90 ,/ J 10 t1 II 77 II H Q'1 IITl 90 1/ II' /1 11 tq 11 w 8q 1/8'1 CJ1 1/ 17.. H " 79 h II 9-z 1/6.j gc, J ,~ 3 {I U -110 " ~1 '4' j (/1.1 qb t2., OF f+: /2. I ,( t " h +/\ II 8-~ 117'b qc / " (/-;- ',i ~I t IJ 1/ I' 0-7 1/7/? qc I 176 q-F7 Cfb So, FACE:. -s(; 11 /.i q3 /12.s rO / , 10 / ..(1 t, '5 . 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RECEIVED JAN 221997 CITY OF TEMECULA ENGINEERING DEPARTMENT This is to certify, for and on the behalf of Engineering Ventures, Inc" that the site grading and building pad located on Lot 224, Tract 3883, MB 63/22, records of Riverside County, California, have been determined to be in substantial compliance at an elevation of 102.00, within a O,lQ:t. as shown on the approved Precise Grading Plan dated July, 1996, prepared by Engineering Ventures, Inc, excepting the following items: · Concrete driveway approach has not been constructed; · Concrete pavement - drivewaylflatwork has not been constructed; . 24" concrete V-drain has not been constructed; · Concrete energy dissipater; · Existing sump condition/standing water at the top of slope, north of the house pad, - not per plan; · Sand bags at the top of the slope and beginning of 24" concrete V -drain have not been installed. Please do not hesitate to call if you have any questions. RFF:vlp c: Mr. Chuck Wright . ------- ...,.,..-- -:. -.,"\. r" ')',,\..)' '-_,;; . '...... ~\ \ -. - /./ . ,.,),/ 'I -, -: ^ ~ '- (" ,-, ',;::- <",,', ' , ,,<:~,' -J.... t...... -:'><-; , (!(J;:~,~~~~:.,~~:; ": .. '\. \ -, r, "\ ,...."<' '. ,.:. ....~~~~-~~,-~ :\j~:~" 1" ,_ ------ ,..~."'....-=o; .~- .;.:35C::J RIDGE PARK DRIVE. SUITE ;::C:=": .. -'=.:"Y:;'::UL,.\ CJ\ S2~eo .. lS09) C33-b,-t::'.=.. -.:,^ 699-3569 \\ ---- -- 'PLOT PLAN ",. ~ N N.T.S., ..... " '69 " ci~ \' 01-- N~ '\ '" b)\ '!lo! .. ~ c;. _.. . . H o N o ... o "- "," "0 " I ~ " 'P,'" ..,,'. . ,',,,' ..,.,' EXlPLANATION X-20 APPROX. LOCATION OF DENSITY TEST IJIL APPROX. LIMITS OF FILL INSPECTED. LA~ESHaRE Engineering MR. AND MRS. WRIGHT 30518 EVE. ESTRADA TEMECULA, CA. Project No: CONSULTING CIVIL ENGINEERS 96-059. COM Date Figure No: 9/19/96