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HomeMy WebLinkAbout5 CURRENTS - SOILSrn / •e�c G V€ t Ii�SjiG ,/ June 27, 2008 Project 3594-81 Titan Pool Center 5765 Santa Ana Canyon Road Anaheim, California 92807 Attention: Mr. Dale Jochim Subject: Geotechnical Recommendations Proposed Retaining Wall Construction 5 Currents Newport Coast, California Dear Mr. Jochim: a) This letter provides our geotechnical evaluation for the proposed construction at the subject property in the city of Newport Coast, California. b) We have visited the site to observe the existing conditions. The proposed construction will be located in the side yard of the parcel and will consist of a new retaining wall. c) The surface area within the rear yard is nearly level and is presently unimproved. The property lines in the rear yard are defined by 6-foot high wrought iron fences. Single family residences occupy adjacent lots to the north and south of the subject property. A 24-foot to 28-foot high, 2:1 (horizontal:vertical), descending slope is present on the west side of the property. An 8-foot bench containing a 6-foot wide concrete v-ditch is present approximately halfway down slope. The slope is currently sparsely landscaped with immature ground cover within the property, and with shrubs and small trees beyond the property line. No obvious signs of instability were observed along the surface area of the slope. d) The 6-foot high wall will be constructed by excavating into the existing slope. The wall will support a 2:1(horizontal:vetrtical) sloping backfill. At the time of our visit the backcut for the wall was already made and shored with plywood and posts. e) The proposed construction is feasible from a geotechnical point of view, provided the recommendations are implemented during the design and the construction phase. An allowable bearing capacity of 1,000 lb/ft2 is recommended at a depth one foot. Use an equivalent fluid pressure of 60 lb/ft3 for the wall supporting sloping backfill. 3 Coiporate Park, Suite 270, Irvine, California 92606 Office (949) 221-0900 Fax (949) 221-0091 e-mail: global@globalgeo.net Titan Pool Center June 27, 2008 Project 3594-81 Page 2 f) Use a coefficient of friction of 0.3 and a passive resistance of 250 lb/ft3. The retaining wall should be constructed with a subdrain. The subdrain should consist of a minimum perforated, 4-inch diameter SDR-35 or Schedule-40 pipe, covered in 1 cubic foot/foot of 3/4 inch filter rock and wrapped in Mirafi 140N filter fabric. Installation of the subdrain should be observed by the Geotechnical Engineer. g) The subgrade soils may have sulphate contents greater than 0.2 percent. The sulphate exposure is considered Severe. The project structural engineer should be notified about the high sulphate content. h) For the wet or dry shotcrete/concrete mix construction, the compressive strength should be 4,500 lb/in2 and a water/cement ratio of 0.45 should be used, in addition to using Type V cement. i) A representative sample of the subgrade soils may be tested after the excavation. If the sulphate content was determined to be less than 0.1 percent, the shotcrete or concrete with lesser compressive strength, as recommended by the structural engineer, may be used. j) No shoring is required, subject to review during the excavation. If the excavation of the pool is planned during winter months, it should insured that exposed temporary cuts for the wall are covered sufficiently with plastic and secured with sand bags to prevent surficial erosion and possible failure. k) The retaining wall footing should be observed by the Geotechnical Engineer/Engineering Geologist prior to placing steel reinforcement. The opportunity to be of service is sincerely appreciated. If you have any questions or if we can be of further assistance, please call. Very truly yours, GLOBAL GEO-ENGINEERING,,W�Q)FCSS\GN� � G e nUP UF'�ISASA ,`v NI � Mohan B. Upasam CO Principal Geotechnical Engin er Exp. Date U3/31/eS rrn RGE 2301 �so1 �' (Exp. March 31, 2009) sj9 �'o � F � n.�,�FOQ� MBU/AK: sjs Q.C� SUv07�`"1 90 County of Orange 0 0 Planning and De.velopment.Serv.ices'Departmetit - Grading Section tq 300 North Flower Street P.O. Box 4048 Santa Anal California 92702-4048 (714) 834-2465 FAX (7-14) 834-4772 1po Date: S7. To: Chi Tf.an, Mana&er-Building Permits From: Johnnie K. Earnest,. Chief Geotechnical/Grading Plan -Check Units - The, report(s)'Were issued.f6r a proposed; Single Family Residence: Tracf-' C(immercial Site-' PROTECT PTO. The reports) were reviewed and approved as indicated by: the attached geotechnical report review -sheet. 'As, you know soil and rock design parameters anticipated in the 6riginal report are sometimes revised' as a result of changed conditions either =countered by supplemental investigatioh and/or as a result of changed conditions encountered during grading, operations. This information is being stibmitted to you to allow, ypur staff to verify/confirm geotechnical design parameters used in calculations provided to the Building Plan Check Section for the subject project: Items of concern include but not limited t.6 mcommcnded.safe bearing pressut'later I loads, settlement, footing embedment. .e,a data, etc. o FLR=ING AND DEVELOPMENT SERVICES DEPARTMENT M GRADING SECTION a 300 North Flower St. P.O. Box 4048 Santa Ana, CA 92702-4048 Telephone Fax Machine (714) 834-'332$ GEOTECHNICAL REPORT REVIEW SHEET REVIEW OF GEOTECHNICAL REPORTS INCLUDING REPORT DATE DATE RECEIVED TYPE OF REPORT ®Soil Report CiM z l 0"s , 11A . C)?5 ['Preliminary (Initial) Q Geologic Report 9- "'A - i Ingrading or Interim (� Geotechnical [j Roughgrade Compacting Q Response ❑ Supplement or Addendum a — ❑ Grading Plan Review ❑ Paving Design ❑ Final By the Consulting Firm: t s l��+ ` C aca •-, mt,A; r •ram:, .�i`i`"1 �-1-5! Tract No. Lots) Site Address: r.C.,•,:. /� } G-15rading Plan Check No. C^��Ci�rjt'yt°?S'7 ❑ Preliminary Grad. Permit Precise Grad. Permit P "I" Developer/owner: � 1 . ", -", - F - C_...c r��c� Address: Ca'1 7 L ` C 307 Soil Engineer: Ck--'k; Engineering Geologist: ------------------------------------------------------------------------ ©-deport Approved ❑ Report Approved Subject to Conditions Below: (] Prior to approval of report attend to items below: Q Prior to County Rough Grade approval and issuance of building permits submit Report Reviewed By: Date: 1 ' 0 " 0 '70 NICK BEBEK (PC:32) ENGINEERING GEOLOGIST PLANNING AND IJX;Vr&LVYMrA i SCitcv t Lr.a uGces� baaw. r Ueros'�:"11 GRADING SECTION300 Noith Flower St. P.O. Eiax 4048 Santa Ana, CA 92702r404a Telephone Zax Machine (714) 834-'332$ GEOTECHNICAL REPORT REVIEW SHEET REVIEW OF GEOTECHNICAL REPORTS INCLUDING. REPORT DATE DATE RECEIVED TYPE OF REPORT. ["Soil Report ? ` 5 `- l Lt- o % [-1:rreliminary ( Initial) a Geologic Report ❑ Ingrading or. Interim (� Geotechnical ❑.Roughgrade Compacting [I Response (] Supplement or Addendum a ❑ Grading Plan Review ❑ Paving Design Q Final ❑ By the Consulting_ Firm* 4S W04:1 1 <e,,U1 Their Job # i Tract No. Lots) Site Address: .4' CV C ':5 C" 0 _ Z G-G'rading Plan Check No. ❑ Preliminary Grad. Permit # Q Precise. Grad, Permit A ----�—------- ------ ---------------------------------------- Developer/Owner: Address: -7 !� 777: <, c,71 - z Soil Engineer: "L �" ' s • U e � Engineering Geologist: ❑ Report Approved Q Report Approved Subject to Conditions Below: 0-Irrior to approval of report attend to items below: Q Prior. to county Rough Grade approval and issuance of building permits submit Q ®® d`7 L3 L ®EA L GE®—ENG/NEEIQ/NG, /NC, September 15, 2008�ttZ sr Project 3594-81 r<< ©0 Titan Pool Center 5765 Santa Ana Canyon Road Anaheim, California 92807 Attention: Mr. Dale Jochim Subject: Geotechnical Recommendations Proposed Retaining Wall Construction 5 Currents Newport Coast, California References: a) Global Geo-Engineering, Inc. - Geotechnical Recommendations, Project 3594-81 dated June 27, 2008; b) County of Orange Planning and Development Services Department Grading Section - Geotechnical Report Review Sheet dated September 4, 2008. Dear Mr. Jochim: This letter provides our response to the referenced geotechnical report review sheet dated September 4, 2008 for the proposed construction at the subject property in the city of Newport Coast, California. 1. Item 1 We have reviewed the grading plan for the proposed improvements. The plan is in general conformance with the referenced geotechnical report. 2. Item 2 Our recommendations have been incorporated in the grading plan. 3. Item 3 We recommend a seismic pressure of 25 lb/f 2/ft depth distributed as an inverted triangle with the resultant acting at 0.6H from the base for a level backfill. 3 Corporate Park, Suite 270, Irvine, California 92606 Office (949) 221-0900 Fax (949) 221-0091 e-mail: lg obal@ lg obal e Titan Pool Center September 15, 2008 Project 3594-81 Page 2 4. Item 4 The wall is anticipated to be found in the certified fill soils and will support certified fill soils. The opportunity to be of service is sincerely appreciated. If you have any questions or if we can be of further assistance, please call. Very truly yours, GLOBAL GEO-ENGINEERING, MOHAN F. UPASANI 1- Mohan B. pasani _ 0� Principal Geotechnical Engineer f_"�' date o3i3i 2301 RGE 2301 (Exp. March 31, 2009) TP-CH��J�� OF CALF MBU/AK: mbu Enclosure: County of Orange Geotechnical Report Review Sheet dated September 4, 2008 PLANNING AND JJL-Vr&LUyMr&N L Mr1MV.L%;XA C GRADING SECTION 300 Norl-h Flowet St. P.O. Box 4048 Santa Ana, CA 92702r4048 Telephone (714). 834- -3-3,213 GEOTECHNICAL REPORT REVIEW SHEET REVIEW OF-GEOTECHNICAL REPORTS INCLUDING fax machine, 834­5b:3!$ - REPORTDATEDATE RECEIVEDTYPR OF REPORT,. Ea"S a i I Report -V7 0% IS 026 8-15reliminary (Initial') di Ingrang or. Intprim [a Geologic Report a . Geotechnical [3, Roughgrade compacting (2 Response Supplement ar'Addendum Ea Q-Grading Plan Review [3 Paving Design Final., By the Consulting F Their Sob 9 3 Tract No. Lot ('s) Site Address: Cur c G-Grading Plan Check No. f,-3 PO 6 T5 b,=s ❑ Preliminary Grad.. Permit 0 precise Grad, Permit A ------------------ ---------- ------------ Developer/Owner : _17-141-1-1\ ;?Oo Adaress: S-7 Soil Engineer: Engineering Geologist: ---------- ------------------------ ----------------------- ------- ------------- -------- ❑ Report'Apprbved ❑ Report Approved Subject to conditions Below: [9--ffrior to approval of report attend to Items below: Prior. to County Rough Grade approval and issuance -of building -permits submit 9asr� i3LL7&AL C7EL�'�E/VG/l�%EEf2//VL7� 1/VC. R E (34 6 1 V E D June 27, 2008 Project 3594-81 Titan Pool Center 5765 Santa Ana Canyon Road Anaheim, California 92807 Attention: Mr. Dale Jochim Subject: Geotechnical Recommendations Proposed Retaining Wall Construction 5 Currents Newport Coast, California Dear Mr. Jochim: a) This letter provides our geotechnical evaluation for the proposed construction at the subject property in the city of Newport Coast, California. b) We have visited the site to observe the existing conditions. The proposed construction will be located in the side yard of the parcel and will consist of a new retaining wall. c) The surface area within the rear yard is nearly level and is presently unimproved. The property lines in the rear yard are defined by 6-foot high wrought iron fences. Single family residences occupy adjacent lots to the north and south of the subject property. A 24-foot to 28-foot high, 2:1 (horizontal:vertical), descending slope is present on the west side of the property. An 8-foot bench containing a 6-foot wide concrete v-ditch is present approximately halfway down slope. The slope is currently sparsely landscaped with immature ground cover within the property, and with shrubs and small trees beyond the property line. No obvious signs of instability were observed along the surface area of the slope. d) The 6-foot high wall will be constructed by excavating into the existing slope. The wall will support a 2:1(horizontal:vetrtical) sloping backfill. At the time of our visit the backeut for the wall was already made and shored with plywood and posts. e) The proposed construction is feasible from a geotechnical point of view, provided the recommendations are implemented during the design and the construction phase. An allowable bearing capacity of 1,500 lb/ft2 is recommended at a depth 1.5 feet. Use an equivalent fluid pressure of 601b/ft3 for the wall supporting sloping backfill. 3 Corporate Park, Suite 270, Irvine, Califoriiia 92606 Office (949) 221-0900 Fax (949) 221-0091 e-mail: global globalgeo net Titan Pool Center June 27, 2008 Project 3594-81 Page 2 fj Use a coefficient of friction of 0.3 and a passive resistance of 250 lb/ft3. The retaining wall should be constructed with a subdrain. The subdrain should consist of a minimum perforated, 4-inch diameter SDR-35 or Schedule-40 pipe, covered in 1 cubic foot/foot of 1/4 inch filter rock and wrapped in Mirafi 140N filter fabric. Installation of the subdrain should be observed by the Geotechnical Engineer. g) The subgrade soils may have sulphate contents greater than 0.2 percent. The sulphate exposure is considered Severe. The project structural engineer should be notified about the high sulphate content. h) For the wet or dry shotcrete/concrete mix construction, the compressive strength should be 4,500 lb/in2 and a water/cement ratio of 0.45 should be used, in addition to using Type V cement. i) A representative sample of the subgrade soils may be tested after the excavation. If the sulphate content was determined to be less than 0.1 percent, the shotcrete or concrete with lesser compressive strength, as recommended by the structural engineer, may be used. j) No shoring is required, subject to review during the excavation. If the excavation of the pool is planned during winter months, it should insured that exposed temporary cuts for the wall are covered sufficiently with plastic and secured with sand bags to prevent surficial erosion and possible failure. k) The retaining wall footing should be observed by the Geotechnical Engineer/Engineering Geologist prior to placing steel reinforcement. The opportunity to be of service is sincerely appreciated. If you have any questions or if we can be of further assistance, please call. Very truly yours, GLOBAL GEO-ENG Mohan B. Up sani Principal Geotechnical 1 RGE 2301 (Exp. March 31, 2009) MBU/AK: sj s f Q' MOHAN B. UPA5AN1 G� c 3 Exp. Date 03/31 /o� r i eer 2301; ox June 27, 2008 Project 3594-81 Titan Pool Center 5765 Santa Ana Canyon Road Anaheim, California 92807 Attention: Mr. Dale Jochim Subject: Geotechnical Recommendations Proposed Retaining Wall Construction 5 Currents Newport Coast, California Dear Mr. Jochim: a) This letter provides our geotechnical evaluation for the proposed construction at the subject property in the city of Newport Coast, California. b) We have visited the site to observe the existing conditions. The proposed construction will be located in the side yard of the parcel and will consist of a new retaining wall. c) The surface area within the rear yard is nearly level and is presently unimproved. The property lines in the rear yard are defined by 6-foot high wrought iron fences. Single family residences occupy adjacent lots to the north and south of the subject property. A 24-foot to 28-foot high, 2:1 (horizontal:vertical), descending slope is present on the west side of the property. An 8-foot bench containing a 6-foot wide concrete v-ditch is present approximately halfway down slope. The slope is currently sparsely landscaped with immature ground cover within the property, and with shrubs and small trees beyond the property line. No obvious signs of instability were observed along the surface area of the slope. d) The 6-foot high wall will be constructed by excavating into the existing slope. The wall will support a 2:1(horizontal:vetrtical) sloping backfill. At the time of our visit the backcut for the wall was already made and shored with plywood and posts. e) The proposed construction is feasible from a geotechnical point of view, provided the recommendations are implemented during the design and the construction phase. An allowable bearing capacity of 1,500 lb/ft2 is recommended at a depth 1.5 feet. Use an equivalent fluid pressure of 60 lb/ft3 for the wall supporting sloping backfill. 3 Corporate Park, Suite 270, Irvine, California 92606 Office (949) 221-0900 Fax (949) 221-0091 e-mail: lobal l� obal eo.net Titan Pool Center June 27, 2008 i Project 3594-81 Page 2 f) Use a coefficient of friction of 0.3 and a passive resistance of 250 lb/ft3. The retaining wall should be constructed with a subdrain. The subdrain should consist of a minimum perforated, 4-inch diameter SDR-35 or Schedule-40 pipe, covered in 1 cubic foot/foot of % inch filter rock and wrapped in Mirafi 140N filter fabric. Installation of the subdrain should be observed by the Geotechnical Engineer. g) The subgrade soils may have sulphate contents greater than 0.2 percent. The sulphate exposure is considered Severe. The project structural engineer should be notified about the high sulphate content. h) For the wet or dry shotcrete/concrete mix construction, the compressive strength should be 4,500 lb/in2 and a water/cement ratio of 0.45 should be used, in addition to using Type V cement. i) A representative sample of the subgrade soils may be tested after the excavation. If the sulphate content was determined to be less than 0.1 percent, the shotcrete or concrete with lesser compressive strength, as recommended by the structural engineer, may be used. j) No shoring is required, subject to review during the excavation. If the excavation of the pool is planned during winter months, it should insured that exposed temporary cuts for the wall are covered sufficiently with plastic and secured with sand bags to prevent surficial erosion and possible failure. k) The retaining wall footing should be observed by the Geotechnical Engineer/Engineering Geologist prior to placing steel reinforcement. The opportunity to be of service is sincerely appreciated. If you have any questions or if we can be of further assistance, please call. Very truly yours, GLOBAL GEO-ENG Ul J� ' Mohan B. Upasani Principal Geotechnic RGE 2301 (Exp. March 31, 2009) MBU/AK: sj s Q MOHAN B. F2 UPASANI Z Exp. Date 03/31 /0� rn m ineer2301 ao %°rE-CNN��`- TFOF CA\\oQ` September 15, 2008 Project 3594-81 Titan Pool Center 5765 Santa Ana Canyon Road Anaheim, California 92807 Attention: Mr. Dale Jochim Subject: Geotechnical Recommendations Proposed Retaining Wall Construction 5 Currents Newport Coast, California References: a) Global Geo-Engineering, Inc. - Geotechnical Recommendations, Project 3594-81 dated June 27, 2008; b) County of Orange Planning and Development Services Department Grading Section — Geotechnical Report Review Sheet dated September 4, 2008. Dear Mr. Jochim: This letter provides our response to the referenced geotechnical report review sheet dated September 4, 2008 for the proposed construction at the subject property in the city of Newport Coast, California. 1. Item 1 We have reviewed the grading plan for the proposed improvements. The plan is in general conformance with the referenced geotechnical report. 2. Item 2 Our recommendations have been incorporated in the grading plan. 3. Item 3 We recommend a seismic pressure of 25 lb/ft /ft depth distributed as an inverted triangle with the resultant acting at 0.6H from the base for a level backfill. 3 Corporate Park, Suite 270, Irvine, California 92606 Office (949) 221-0900 Fax (949) 221-0091 e-mail: alobal@globalgeo.net Titan Pool Center September 15, 2008 Project 3594-81 Page 2 4. Item 4 The wall is anticipated to be found in the certified fill soils and will support certified fill soils. The opportunity to be of service is sincerely appreciated. If you have any questions or if we can be of further assistance, please call. �iOf hSS � Very truly yours, 1p�\�, VIOFIAN C . �l\��+4 GLOBAL GEO-ENGINEERING, INC. DPASANI �-L u� Exp. Date 03/31/0� i 7 2301 Mohan B. U sani A' 4Fo. Principal Geotechnical Engineer RGE 2301 (Exp. March 31, 2009) MBU/AK: mbu Enclosure: County of Orange Geotechnical Report Review Sheet dated September 4, 2008