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Home My WebLink AboutCT 03-02; CARLSBAD RANCH PA 5; SOILS COMPACTION REPORT; 2010-05-25Geo technical Engineering Construction Inspection • Materials Testing Environmental May25,2010 Office Locations Grand Pacific Carlsbad, L.P. Project No. 1916-A07 5900 Pasteur Court, Suite 200 Log No. 10-459 Carlsbad, CA 92008 Orange County Corporate Branch: . 2992 E. La Palma Avenue Attention: Mr. Bruce Zelenka Suite A Anaheim, CA 92806 Subject: Soils Compaction Report Tel: 714.632.2999 Fax: 714.632.2974 Project: Villa 52 - Building Pad San Diego . Carlsbad Grand Pacific Resort Imperial County Carlsbad, CA 6295 Ferns Square CT 03-02, Drawing No. 428-9A Suite - San Diego, CA 92121 Tel: 858.537.3999 Dear Mr. Zelenka: Fax:, 858.537.3990 In accordance with your request and authorization, we have completed our observation and Inland Empire - testing during the grading of the building pad for Villa 52. The results of our findings, 14467 Meridian Parkway together with our test results and recommendations are to be found in 'the accompanying Building 2A Riverside, CA 92518 report. Tel: 951.653.4999 Fax: 951.653.4666 Based on the results of our observation and testing between May 17 and 25, 2010, we certify that the described earthwork has been completed in general accordance with the intentions Indio and recommendations of the geotechnical reports by Leighton & Associates, Inc. (see 44917 Golf Center Parkway" arkway references) and the approved grading plans. Suite . Indio, CA Should you have any questions regarding this report, please do not hesitate to contact our Fax: 760:342:4525 office. • • OC/LAflnland Empire Respectfully submitted, Dispatch MTGL, Inc. 800 491 2990 • , San Diego Dispatch 9,oFESs/ 888.844.5060 Senior Engineer No. 572 . . www mtglinc corn TABLE OF CONTENTS INTRODUCTION ............................................ GEOTECHNICAL REPORT 1 SITE DESCRIPTION 1 GRADING AND EARTHWORK 1 GEOTECHNICAL TESTING 2 CONCLUSIONS 2 RECOMMENDATIONS 2 LIMITATIONS 3 References Figures 1 - Field Density Test Location Plan •, Table 1 - Laboratory Compaction Test Results Table 2 - Field Density Test Results ' . . . t F Carlsbad Grand Pacific Resort Villa 52, Project No. 1916-A07 Carlsbad, CA . Log No. 10-459 INTRODUCTION .. This report presents the results of our observation and testing during the grading of the building pad for Villa 52 at Carlsbad Grand Padific Resort in Carlsbad, California.This report covers testing services performed between May 17 and 25, 2010. •. - . GEOTECHNICAL REPORT '• . Geotechnical information pertaining to the site was presented in the geotechnical and grading reports by Leighton andAssociates, Inc. dated April 11, 2005, August -2, 2006 and September 11, 2007. Our function during grading was limited to observation and testing of earthwork for the building pad of Villa 52 between May 17 and 25, 2010 SITE DESCRIPTION .. • . . -, . '. . - Prior to this grading work, the project site consists of a sheet graded lot, which is relatively level.' The site is bounded by ascending graded slope to the north, by existing villa to the' east and by descending slope to the south and west. Generally, the project site was essentially in the same condition as reported in the reference as-graded geotechnical report, dated August 2, 2006 and September 11, 2007 GRADING A EARTHWORK . . . Grading of the building pad consisted of the removal andJrecompaction of the existing soil. The existing soil over the entire building pad was removed and recompacted such that there is at least 5 feet of compacted fill below finish pad elevation. Exposed subgiade to receive fill was scarified, moisture conditioned and 'compacted. The horizontal limits of the earthwork grading for the building pad extended laterally to at least 5 feet beyond the building footprint. . . Engineered fihl soils used èoiisisted of the existing on-site soils suitable for recompaction per the recommendations of the reference geotechnical reports Fill soils were moisture conditioned to within optimum moisture content Fill soils were placed in lifts and compacted with heavy compaction - . equipment. ' 4 . - I 1 -. . • • .. , .. I- - G. STM D6938 was used for field density testing of the soil density and ity testing was at random locations and elevations The approximate report are indicated on Figure 1. Fill soils were compacted to a minimum relative compaction of 90 percent based on Test Method ASTM D1557, with the upper 12 inches finish subgrade compacted to at least 95 percent relative compaction Failing density test were regraded and recompated until meeting the minimum relative compaction Laboratory Tests The maximum density and optimum moisture content of representative samples of the fill soils were determined in the laboratory in accordance with ASTM D1557 test procedures The results of the laboratory maximum density tests are presented in Table 1 CONCLUSIONS Based upon the information presented in the reference geotechmcal reports and on the observation and testing conducted by MTGL, Inc as described herein, we certify that the grading of the building pad for Villa 52 has been completed in general accordance with the intentions and recommendations of the reference geotechnical reports and approved grading plans It is our opinion that the site is suitable for the intended use provided the recommendations presented in this report and the reference geotechmcal reports are considered for final planning and structural design, and implemented during construction RECOMMENDATIONS The recommendations presented in the reference geotechnical reports are considered to remain in effect, except where superseded by 'addendum recommendations or, as specifically recommended herein The reference geotechnical reports should be considered a part of the project plans and specifications 2 Carlsbad Grand Pacific Resort Villa 52.. Project No. 1916-A07 Carlsbad, CA Log No. 10-459 Continuous- and spread footings are suitable for support of the proposed structure. It is our opinion that the recommendations and soil criteria for soil bearing values for foundations and slab-on-grade contained in the reference geotechnical reports are applicable and shall be implemented in the design of the proposed structure; LIMITATIONS This report has been prepared in accordance with generally accepted geotechnical practices. Our work is considered to be in accordance with the usual standards of the profession and with. local practice. No other, warranty is expressed or implied as to the professional advice or data included in • this report. • • •' 0 It should be recognized that that our work does not constitute a guarantee that the grading contractor has performed his work in accordance with the project specifications.. in addition, no representations • are made as to the quality or extent of materials not observed, for any subsequent change to the site, or failure of others to properly repair damages bythe uncontrolled actions of water. 0• 30 - -GRAND PACIFIC rDT(PR IV ... TE %IE- Ai PO YA1 IJ%f ____...-•-•--- 1LL.633 .29 *32 431 - \ LEGEND: - . - .46 Approximate Location of Field Density Test - Approximate Limits of Grading. FIELD DENSITY TEST PLAN CARLSBAD RANCH - VILLA 52 Project No. 1916-A07 Date: MAY 2010 FIGURE 1 4. MTGL, INC. I REFERENCES I. Leighton and Associates,. Inc., 2005, Geotechnical Investigation, Proposed 53-Acre Resort Development - Phase 1, Carlsbad Ranch, Plannmg Area No 5, Carlsbad, CA Project No 040575-003, dated April 11, 2005 2 Leighton and Associates, Inc., 2006, As-Graded Geotechmcal Report of Rough and Fine Grading, Hotel One, Resort and Conference Facilities, Sales Building, and Villas 53 Through 56, Lots 10, 11 and A Portion of Lot 1, Grand Pacific Carlsbad, Carlsbad, California, Project No 0405757005, dated August 2, 2006 3 Leighton and Associates, Inc., 2007, Grading Plan Review and Supplemental Letter, Carlsbad Planning Area 5, Villas 50 through 52, Carlsbad, California, Project No 040575-005, dated September 11, 2007 .3.: Excel Engineering, Grading and Erosion Control Plans for Carlsbad Ranch, Planning Area No 5, Resort Site - Villas 50 - 52, Project No CT 03-02, Drawing No 428-91), Sheets 1 tO 8. 4 MTGL, Inc., 2010, Change of Geotechnical Consultant, Carlsbad Ranch, Villas 50 thru 52, Project No 1916-A07, Log No 10-441, dated April 23, 2010 Lab No. -' Description Dry Density Optimum PCF Moisture, % 146 Light Grey/'Tan Silty Fine Sand 110.0 14 5 147 Yellowish-Brown Silty Clayey Sand 118.7 12.8 149 Light Grey/Tan Silty Fine Sand 107.0 15.0 159 Dark Red-Brown Silty Sand 1250 11.0 160 Orange-Brown Silty Clayey Sand 122.8 - . . 4 . t -.- - .# * --4- .-. -I / - t - I - -I. - I I 7- - Table 2 Field Density Test Results Test No. Date Location Depth/ Elev. (Feet) Moisture Content (%) Dry Density (pcf) Curve No. Relative Comp. % Test Type Remarks 1 5/17/10 Villa 52 192 13.8 99.9 146 91 NU 2 5/17/10 Villa 52 192 17.4 99.2 146 90 NU 3. 5/17/10 Villa 52 193 16.6 109.1 147 92 NIJ 4 5/17/10 Villa 52 193 . 11.6 114.3 147 96 NU 5 5/17/10 Villa 52 194 15.0 109.9 147 92 NIT 6 5/17/10 Villa 52 195 14.3 112.1 147 94 NU 7 5/17/10 Villa 52 195 ' 16.7 100.6 146 91 MU 8 5/18/10 Villa 52 196 13.4 105.6 146 96 NU 9 5/18/10 Villa 52 196 18.1 99.3 146 90 NU 10 5/18/10 Villa 52 192 16.0 100.9 146 92 NU 11 5/18/10 Villa 52 193 13.1 105.2 146 96 NU 12 5/18/10 Villa 52 194 16.0 103.4 146 94 MU 13 5/18/10 'Villa 52 192 13.7 106.7 147 91 MU 14 5/18/10 Villa 52 193 16.1 105.3 160 86 NU Failed 15 5/18/10 Villa 52 193 14.2 110.6 160 90 NU Retest 14 16 '5/18/10 Villa 52 ' 194 12.5 113.7 159 91 NO 17 5/18/10 Villa 52 195 10.7 112.7 - 159 90 NU 18 5/18/10 Villa 52 195 10.9 115.5 159 90 MU 19 5/18/10 Villa 52 196 9.4 119.1 159 95 MU 20 5/19/10 Villa 52 . 192 10.5 112.1 159 V 91 NU 21 5/19/10 Villa 52 193 13.0 118.4 159 95 ' MU 22 5/19/10 Villa52 194 12.3 114.7 160 V 93 NU 23 5/19/10 Villa 52 ' 195 12.9 117.9 159 94 NO 24 5/19/10 Villa 52 192 9.4 113.0 159 90 MU 25 5/19/10 Villa 52 194 11.4 121.4 159 97 NU 26 5/19/10 Villa 52 196 10.4 118.0 159 94 MU 27 5/19/10 Villa 52 196 10.7 :121.6 159 V 97 MU 28 5/19/10 Villa 52 192 11.3 116.0 159 93 MU 29 5/19/10 Villa 52 193 . 11.7 117.4 159 94 NO 30 5/19/10 Villa 52 194 9.9 112.6 159 90 NU 31 5/19/10 Villa 52 195 11.1 120.3 159 96 MU 32 5/19/10 Villa 52 195 12.5 118.5 159 95 MU 33 5/19/10 Villa 52 192 8.4 107.7 159 86 MU Failed 34 5/19/10 Villa 52 192 11.1 113.0 159 90 MU Retest 33 35 5/19/10 Villa 52 194 10.3 f_121.4 159 97 NU I ,• ,: • • * . 4 * * • Test • ;• Depth! Moisture Dry . Curve Relative Test : No Date Location Elev. Content Density No Comp Type Remarks • (Feet) (%) (pci) • ••. % 36 5/20/10 Villa52, 196 11.8 115.7: 159.'93 37 5/20/10 Villa 52 196 11:8 • 122.1 159 98. 38: 5/20/10 Villa 52 . FSG 13.4 . 108.4 147 91, Failed -39 5/20110 Villa 52. FSG 15() 118 147 • 40 5/20/10 Villa 52 FSG' .12.5. 114.5 147.. 96• .• - 41 5/20/10 Villa 52 FSG 13.2 1126 147 95' • 42 5/20/10 Villa 52 FSG 13.4 113.9 147 4. 96 43 5/20/10 Villa 52 • FSG 12.2 112.5 147 Retest 38 4 5/25/10 Villa52. •. FSG . 1LO 1199 159, 96 45 5/25/10 Villa 52 • FSG 12.9 113.1 147 . 95. • 46 5/25/10 Villa 52 FSG .13.0 1145 '147 96 •• '-•, ... • . ,-'' : • '4 ,. * , . ••'•-. . - . -. 4 - IF • ' , - - • - - ' I • - • • t ._ - * - • - . .- . - ' - 1• •' ' ., - . - - . - -.• -' - .- * - - , * - . * ' ' . *'1 • , • .. .•-, • .;• ,.- :'-- -•- -. -''• .- .•. • *, ••• I I '. ' - • -a,,.. • - "1 • - .s - • ,-'• • . •• - . * I