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Home My WebLink AboutCT 04-10A; POINSETTIA PLACE; PAVEMENT SECTION RECOMMENDATIONS; 2012-05-02Cf o9.Ok GeoTek, Inc. 1384 Poinsettia Avenue, Suite A Vista, CA 92081-8505 (760) 599.0509 Office (760) 599-0593 Fax www.geotekusa.com May 2, 2012 Project Number 3389-SD3 Shea Homes Limited Partnership, San Diego 9990 Mesa Rim Road San Diego, CA 92 121 Attention: Mr. Greg Ponce Subject: Pavement Section Recommendations Fairlead Avenue and Genoa Lane Vitalia (PoinsettiaIProject Carlsbad, California - £—OCA') Dear Mr. Ponce: Presented herein are GeoTek, Inc.'s (Geolek's) recommendations related to asphaltic concrete pavement sections for the subject street area. Recommendations are based on sampling and R- value testing of near subgrade soils as described below and Traffic Indices (TI's) as indicated on the Improvement Plans for the project. Pavement Section Recommendations GeoTek obtained four (4) near surface soil sample from the project site for R-value testing. The soil sampling occurred during a field reconnaissance. R-value testing was performed by La Belle-Marvin (R-value report enclosed). The R-value test results and areas which they may be considered to represent, based on field observations, are indicated on Table I below. A traffic index of 5.0 is used based on that indicated on the Improvement Plans and Table A in Chapter I of the City of Carlsbad Engineering Standards. The Traffic Index value should be verified by the design Civil Engineer and/or the City of Carlsbad. R-value Test Results Sample Location R-value Area Represented Fairlead Avenue 43 Fairlead Avenue Station 10+00 to 14+00 Station 11+00 Fairlead Avenue 15 Fairlead Avenue Station 14+00 to 17+00 Station 14+50 Genoa Lane Station 10+00 to I 1+93 Fairlead Avenue 41 Fairlead Avenue Station 17+00 to 20+00 Station 17+00 Fairlead Avenue 45 Fairlead Avenue Station 20+00 to 23+00 Station 21 +00 GEOTECHNICAL I ENVIRONMENTAL I MATERIALS Pavement Section Recommendations May 2, 2012 Vitalia Project, Fairlead Avenue and Genoa Lane 3389-SD3 Carlsbad, California Page 2 For design purposes, an R-value of 41 was used to represent all streets in the project excluding Fairlead Avenue Station 14+00 to 17+00 and Genoa Lane Station 10+00 to I 1+93 where a value of IS was applied. The following table presents pavement sections based on the results of the recent R-value testing and Caltrans pavement design methodology for a 20 year design life Performance of the pavement sections will ultimately be based largely on construction methods and traffic loading, and subgrade performance. MINIMUM RECOMMENDED PAVEMENT SECTIONS Traffic Design Pavement Section Location Index R-Value AC/AB (in) Fairlead Avenue Station 10+00 to 14+00 and 5.0 41 4/4 (see note below) 17+00 to 23+00 Fairlead Avenue Station 5.0 15 4/6 14+00 to 17+00 Genoa Lane 5.0 IS 4/6 Station 10+00 to 11+93 Note: The recommended pavement sections comply with Caltrans design methods and typical City Standards per City of Carlsbad Supplemental Standard GS- 17. The Improvement Plans indicate minimum 4" AC over 6" AB. Pavement Construction All pavement installation, including preparation and compaction of subgrade, compaction of base material, placement and rolling of asphaltic concrete, should be done in accordance with the City of Carlsbad specifications, and under the observation and testing of Geolek and a jurisdictional inspector where required. Aggregate base should consist of crushed rock with an R-value and gradation in accordance with Class II Aggregate Base (Section .26 of the Standard Caltrans Specification) or Crushed Aggregate Base (Section 200.0.0 of the Standard Specification for Public Works Construction). Minimum compaction requirements for the upper 12 inches of subgrade should be 95 percent and 95 percent for aggregate base, as per ASTM D 1557 (modified proctor). Trash Enclosures In accordance with City Standards, the level loading area in front of trash enclosures shall be concrete with a minimum thickness of 7¼ inches per City of Carlsbad Supplemental Standard GS- 16. 'G, G EOT E K Pavement Section Recommendations •: :• May 2, 2012: : :Vitalia Project, Fairlead Avenue andGenoa Lane 3:3895D3 ..:.Carlsbad, California. Page 3 Closure : •• •• Our above findings/recommendations were prepared::in conformance with generally accepted ..profess ionial engineering practices and no further warranty is implied This report is subject to review by the controlling authorities for this project. Geolék: accepts neither responsibility nor liability for work, testing, or recommendations performed or provided by others 4 • • If you should have any questions, or if Geolek can be of additional service, please do not • • hesitate to contact the undersigned Respectfully submitted, No. 1142 Principal Geologist 'OFcAUO# • Senior Project Engineer Enclosures: Cited References • : • - • R-value Test Results •. • 0• • •• Copies (I) Addressee via email (I) Sarah Beckman Shea Homes via email GEOTEK : •, Pavement Section Recommendations May 2, 2012 Vitalia Project, Fairlead Avenue and Genoa Lane 3389-SD3 Carlsbad, California References CITED REFERENCES "Carlsbad Tract No. CT 04-10 (A), Poinsettia Lane, Improvement Plans" by Pangea Land Consultants, Inc. approved by City 01/20/2012 City of Carlsbad Engineering Standards, latest revision 1/ 14/2011 Standard Specification for Public Works Construction, current edition Standard Caltrans Specification, California Department of Transportation, 2010 CalFP version 1. I Computer Program by California Department of Transportation 2008 valid through 2012. GE 01£ K ANALYSIS DESIGN LaBelle • Abon'6111*11 PROFESSIONAL PAVEMENT ENGINEERING A CALIFORNIA CORPORATION SOILS, ASPHALT TECHNOLOGY April 11, 2012 Mr. William Deile GeoTek Inc. 1384 Poinsettia Avenue, Suite A Vista, CA 92081-8505 Project No. 38082 Dear Mr. Deile: Testing of the bulk soil samples delivered to our laboratory on 4/09/2012 has been completed. Reference: W.O. #3389-SD3, P.O. #1599 Client: Shea Homes Project: Vitalia Samples: R-1 Sta. 21+00 R-2 Sta. 17+00 R-3Sta. 14+50 R-4 Sta. 11+00 R-Value data sheets are attached for your use and file. Any untested portion of the sample will be retained for a period of 60 days prior to disposal. The opportunity to be of service is sincerely appreciated and should you have any questions, kindly call. Respectfully Submitted, 0 SSZN . . ..................... Steven R. Marvin RICE 30659 SRM:rw 2700 S. GRAND AVENUE o SANTA ANA, CA 92705-5404 o (714) 546-3468 a FAX (714) 546-5841 INFO@LABELLEMARVIN.COM R-VALUE DATA SHEET J.N. 3389-SD3 Shea Homes "Vitalia" PROJECT NUMBER 38082 BORING NUMBER: R-1 Sta. 21+00 SAMPLE DESCRIPTION:Brown Sandy Silt Item a SPECIMEN b c Mold Number 1 2 3 Water added, grams 100 130 88 Initial Test Water, % 15.7 18.3 14.6 Compact Gage Pressure,psi 80 50 145 Exudation Pressure, psi 529 178 763 Height Sample, Inches 2.49 2.60 2.49 Gross Weight Mold, grams 3013 3024 3019 Tare Weight Mold, grams 1965 1969 1977 Sample Wet Weight, grams 1048 1055 1042 Expansion, Inches xl0exp-4 32 11 58 Stability 2,000 lbs (160psi) 24 I 49 26 I 60 22 / 45 Turns Displacement 5.26 6.62 5.21 R-Value Uncorrected 52 1 39 55 R-Value Corrected 52 42 55 Dry Density, pcf 110.3 103.9 110.7 DESIGN CALCULATION DATA Traffic Index Assumed: 4.0 4.0 4.0 G.E. by Stability 0.49 0.59 0.46 G. E. by Expansion 1.07 0.37 1.93 45 EXamined & Checked: .i Equilibrium R-Value by EXPANSION Gf = 1.25 0.0% Retained on the REMARKS: 3/4" Sieve. * * 1r-vt' OF CAft /11/ 12 E 30659 The data above is based upon processing and testing samples as received from the field. Test procedures in accordance with latest revisions to Department of Transportation, State of California, Materials & Research Test Method No. 301. Lailelic • A%%nrvifl 100 90 z 0 or' U" 'V z 60 0 50 40 R-VALUE GRAPHICAL PRESENTATION PROJECT NO. 3fOe7- . 400 . j. -spa 350 BORING NO.'-t 94.. 2t-400 300 4c -i-v i3+ 00 LJ DATE 200 TRAFFIC INDEXJ8SU..AJ.&. 4.. C) 100 R-VALUE BY EXUDATION 47 i R-VALUE BY EXPANSION 4-S C) C-) MCI IN moommalmommmm, iffum AMR IRS, 14•0 i(,.o % MOISTURE "AT FABRICATION 800 700 600 500 400 300 200 100 IMMUNE mrmrm=i OWN ME 9 Nimm m— 9 0 m i I la I PAN -9 ri s RON no MEMBER 11101 m no mool __ I r c4j;:: liii±1 mmmmmm mm mmmmomm LLa BONN- lialEoMm 9m i i 'Wmi w 9 ul k Ow F, 2,0 1.0 ________________ _____ - U -- - - 0 1.0 2.0 3.0 4.0 L4Y__0 LJ9 COVER THICKNESS BY EXPANSION, Fr.. % MOISTURE - F R-VALtJE vs. EXUD. PRES. T by EXUDATION A EXUD. T vs. EXPAN. T • T by EXPANSION REMARKS flc1 - LaBCNC •Alanin • • • • PROFESSIONAL PAVEMENT ENGINEERING R - VALUE DATA SHEET J.N. 3389-SD3 Shea Homes "Vitalia" PROJECT NUMBER 38082 BORING NUMBER: R-2 Sta. 17+00 SAMPLE DESCRIPTION:Brown Sandy Silt Item a SPECIMEN b c Mold Number - 4 5 - 6 Water added, grams 72 46 31 Initial Test Water, % 17.5 15.1 13.7 Compact Gage Pressure,psi 40 85 135 Exudation Pressure, psi 205 430 799 Height Sample, Inches 2.60 2.45 2.37 Gross Weight Mold, grams 3079 3028 3014 Tare Weight Mold, grams 1977 1975 1976 Sample Wet Weight, grams 1102 1053 1038 Expansion, Inches x 10exp-4 0 33 62 Stability 2,000 lbs (160psi) 46 I 112 27 / 57 26 I 51 Turns Displacement 4.39 4.34 3.90 R-Value Uncorrected 20 51 58 R-Value Corrected 21 51 55 Dry Density, pcf 109.3 113.2 116.8 DESIGN CALCULATION DATA Traffic Index Assumed:] 4.0 4.0 4.0 G.E. by Stability 0.81 0.50 0.46 G. E. by Expansion J 0.00 1.10 2.07 Equilibrium R-Value 41 by Examined & Checked: 4 ~,4\ZE 3/4" Sieve. /11/ 12 REMARKS: Gf 1.25 0.0% Retained_on_the Eied ... 30659 ata above is based upon processing and testing samp received from the Test procedures in accordance with latest revisions to Department of portation, State of California, Materials & Research Test Method No. 301. I4nfldIc 9 ANflifl loo 90 z 80 70 60 50 40 I 30 20 10 F R-VALUE GRAPHICAL PRESENTATION PROJECT NO. . 400 q 350 BORING NO. -2. ri#oo 300 re.s S-lea '4o-" DATE 4/u/t?_ 200 TRAFFIC INDEX- A.LA.. .4 • C) 100 R-VALUE BY EXUDATION - A j o R-VALUE BY EXPANSION S 800 700 600 500 400 300 200 100 im llllll lifflum Nil umolmWmEm Imiffii EHRMHOM ~mmiffl i mm III. % MOISTURE AT FABRICATION an Imil IN NIN EMER E mull 19mom1promm HE M poll P. 9WINS—Mmul 90 9=grR--&;:N:m Room No NOON RMIEPT 11 0 Emm SEEM lRommommi mg Im kl11I'U' ;1rnI;u!I man fflHil1fl Ull1llll __ I mom FEMME wi 1.0 2.0 3.0 4.0 c7c COVER THICKNESS BY EXPANSION, Fr. Z MOISTURE R-VALUE vs. EXUD. PRES. N T by EXUDATION A EXUD. T vs. EXI'AN. I A A A T by EXPANSION REMARKS 0 L;ie!Ie • PROFESSIONAL PAVEMENT ENGINEERING R - VALUE DATA SHEET J.N. 3389-SD3 Shea Homes "Vitalia" PROJECT NUMBER 38082 BORING NUMBER: R-3 Sta. 14+50 SAMPLE DESCRIPTION: Brown Sandy Silt Item a SPECIMEN b c Mold Number 7 8 9 Water added, grams 80 46 58 Initial Test Water, % 21.6 18.3 19.5 Compact Gage Pressure,psi 45 120 80 Exudation Pressure, psi 206 689 403 Height Sample, Inches 2.62 2.48 2.57 Gross Weight Mold, grams 3044 3019 2871 Tare Weight Mold, grams 1968 1964 1789 Sample Wet Weight, grams 1076 1055 1082 Expansion, Inches xl0exp-4 30 81 67 Stability 2,000 lbs (160psi) 45 I 114 31 / 73 34 / 83 Turns Displacement 4.34 3.67 3.92 R-Value Uncorrected 19 45 37 R-Value Corrected 20 45 39 Dry Density, pcf 102.4 108.9 106.8 DESIGN CALCULATION DATA Traffic Index Assumed: 4.0 4.0 4.0 G.E. by Stability 0.82 0.56 0.62 G. E. by Expansion 1.00 2.70 2.23 15 Examined & Check 4 /11/ 12 Equilibrium R-Value by EXPANSION CO (D CSP rn Gf = 1.25 LL ';O659 0.0% Retained on the REMARKS: 3/4" Sieve. Ste n J30659 The data above is based upon processing and testing samples as received from the field. Test procedures in accordance with latest revisions to Department of Transportation, State of California, Materials & Research Test Method No. 301. L;rllelle 9 Aiirvun NEW - 2o. % MOISTURE AT FABRICATION R-VALUE GRAPHICAL PRESENTATION PROJECT NO. . 400 j3'-S1 350 BORING NO. . -3 4-4 -o 300 X-0 - 1-74.. DATE 200 TRAFFIC INDEX )_L4._4. i 00 R-VALUE BY EXUDATION 2-.- CL R-VALUE BY EXPANSION CD 800 700 600 500 400 300 200 100 go MAIN t-gig-2gaggo awl kffiom ME Sm IN ONE 5 .... . - ir TI E1T; L1j',' :Wk11, I Hh1Ull ML 1.0. 1.0 2.0 3.0 6.0 COVER THICKNESS BY EXPANSION, yr. % MOISTURE S R-VALUE vs. EXUD. PRES. N T by EXUDATION . S S A A EXUD. T vs. EXPAN. T A A T by EXPANSION S REMARKS S S.. 6i.zc- S L;iflellc • Arvii - PROFESSIONAL PAVEMENT ENGINEERING 100 90 z 80 :: 50 1-4 20 4.0 3.0 2,0 R - VALUE DATA SHEET J.N. 3389-SD3 Shea Homes "Vitalia" PROJECT NUMBER 38082 BORING NUMBER: R-4 Sta. 11+00 SAMPLE DESCRIPTION: Brown Sandy Silt Item a SPECIMEN b c Mold Number 10 - 11 12 Water added, grams 90 117 75 Initial Test Water, % 16.6 19.1 15.3 Compact Gage Pressure,psi 65 40 110 Exudation Pressure, psi 318 159 536 Height Sample, Inches 2.52 2.62 2.46 Gross Weight Mold, grams 3026 3048 3020 Tare Weight Mold, grams 1959 1965 1963 Sample Wet Weight, grams 1067 1083 1057 Expansion, Inches x 10exp-4 22 0 45 Stability 2,000 lbs (160psi) 27 I 61 36 I 91 24 I 50 Turns Displacement 4.95 5.83 4.55 R-Value Uncorrected . 45 25 55 R-Value Corrected 45 27 55 Dry Density, pcf 110.0 105.2 112.9 DESIGN CALCULATIONDATA Traffic Index Assumed: 4.0 4.0 4.0 G.E.byStability 0.56 0.75 - 0.46 G. E. by Expansion 0.73 0.00 1.50 Equilibrium R-ValueGf 43 by Examined & Checked: 4 /11/ 12 LU Cr .- 659 REMARKS: _1.2:XPSION 0.0% Retained _on_the 3/4" Sieve. . _______________________________ The data above is based upon processing and testing samples as received from the field. Test procedures in accordance with latest revisions to Department of Transportation,StateofCalifornia,Materials&ResearchTestMethodNo.301. Lalkile • Marvn 100 90 z 0 an 'J'J 'U z 60 Cl) 50 CIA 4.0 -I 3.0 0 2 2.0 R-VALUE GRAPHICAL PRESENTATION t •-•, "''s PROJECT NO. (ju '.&3. 33$c_ S•D3 350 BORING NO.IR S4cA. L-4-o -J 300 ZQS.S. t4D4uO- DATE 4/u 200 TRAFFIC INDEX A~4-C 100 R-VALUE BY EXUDATION 44 fflhIb mHomma —Big HhIll R-VALUE BY EANS ION % MOISTURE AT FABRICATION 800 700 600' 500 400 300 200 100 • - * 10 0 * 1.0 2.0 3.0 4.0 COVER THICKNESS BY EXPANSION, Fr. ffiolloo lam Z-imolom 271-glummmillo q- q. Q z R ** OR, 9 i i ri ON al I I I j Nuni momw 41•• IL1iLW1J1 _______________ '1'i"U SEEN]@ %111MME im allplall- Boom ME -=a , ~_k_Affimffffi 8~~E £10 Z MOISTURE • * • R-VALUE vs. EXUD. pi.cs. T by EXUDATION ___EXUD. T vs. EXPAN. T A T by EXPANSION REMARKS zc l4;kOc • AWVfl PROFESSIONAL PAVEMENT ENGINEERING