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Home My WebLink AboutCT 04-11; POINSETTIA COMMONS; FINAL PAVEMENT DESIGN EMBARCADERO LANE; 2008-03-14I-K ALBUS-KEEFE & ASSOCIATES, INC.' GEOTECHNICAL CONSULTANTS cro'f-lJ March 14, 2008 J.N.: 1286.01 Mr. Brad Perozzi Trammell Crow Residential, Southern California 949 South Coast Drive, Suite 400 Costa Mesa, California 92626 Subject: Final Pavement Design, Embarcadero Lane Stations 13+00 through 18+76, Poinsettia Commons, City of Carlsbad, California. References: "Interim Geotechnical Report of Rough Grading for Portions of Building PadS I through 13, Poinsettia Commons, -Avenida Encinas and Embarcadero Way, City of Carlsbad, California"; by Albus-Keefe & Associates, Inc', J.N. 1286.01, dated September 6, 2007. "Improvement Plans for Poinsettia Commons, City of Carlsbad", Sheets 1 through 11", Scale: 1" = 20', by Project Design Consultants; signed by City July 2, 2007. Dear Mr. Perozzi, Pursuant to your request, Albus-Keefe & Associates, Inc. is pleased to provide the following structural pavement design criteria for the subject site. The pavement design, criteria presented below are based on the improvement plans and interim rough grading report referenced above, City Standard Detail GS-17, the soil conditions present at the site, recent R-value testing, recent gradation testing (see attached), and the estimated Traffic Index indicated. STRUCTURAL PAVEMENT DESIGN CRITERIA V V ' 'location Traffic . R-ahie --AC' .'A.B. - --I pd . . (inches) (inches) Embarcadero Lane Stations 13+00 through 18+76 6.0 15 4.0 12.0 Parking Stalls V - 4.5 15 4.0 4.0 AU. = Aspiiait Loncrete A.E. = Aggregate Base Prior to placement of pavement section, subgrade surfaces should be scarified to a depth of 12 inches, brought to uniform moisture slightly over optimum, then' compacted to at least 95 percent of the laboratory standard. The laboratory standard should be ASTMD1557-02.. Aggregate base should 'be placed in lifts no greater than 6 inches in thickness, brought to a uniform moisture slightly over optimum, then compacted to at least 95 jDercnt'of the laboratory standard. The laboratory standard should be ASTM D1557-02. Aggregate base materials should be either Crushed Aggregate Base or Crushed Miscellaneous Base conforming to Section 200-2 of the Standard Specification for Public Works Construction (Greenbook). 1011 North Armando Street, Anaheim CA 92806-2606 (714) 630-1626 FAX (714) 630-1916 Trammell Crow Residential, Southern California March 14, 2008 J.N.: 1286.01 Page 2 Paving asphalt should be PG 64-10 (or either AR 4000 or AR 8000) conforming to the requirements of Section 203-1 of the Greenbook. Asphalt concrete materials should conform to Section 203-6 and construction should conform to Section 302 of the Greenbook. LIMITATIONS This information is based on the proposed development and geotechnical data as described herein. The materials encountered on the project site, described in other literature, and utilized in our laboratory testing for this work are believed representative of the total project area, and the conclusions and recommendations contained in this report are presented on that basis. However, soil and bedrock materials can vary in characteristics between points of testing, both laterally and vertically, and those variations could effect the conclusions and recommendations contained herein. As such, observation and testing by a geotechnical consultant during the construction phase of proposed work are essential to confirming the basis of this report. This report has been prepared consistent with that level of care being provided by other professionals providing similar services at the same locale and time period. The contents of this report are professional opinions and as such, are not to be considered a guaranty or warranty. This report should be reviewed and updated after a period of one year or if the site ownership or project concept changes from that described herein. This report has not been prepared for use by parties or projects other than those named or described herein. This report may not contain sufficient information for other parties or other purposes. This report is subject to review by the controlling governmental agency. Respectfully submitted, ALB US-KEEFE & ASSO CIA TES, Douglas Senior Engineer GE 2547 Enclosure: Plate 1 - Gradation Size Distribution Summary ALB US-KEEFE & ASSOCIA TES, INC. UNIFIED SOIL CLASSIFICATION 100 90 80 - 70 m 60 z 50 —I 0 (I) Cl) 40 z 30 20 10 0 COBBLES GRAVEL I SAN]) SILT AND CLAY COARSE FINE ICOARSEI MEDIUM FINE I U.S. STANDARD SIEVE SIZES 6" 3" 1.5" 3/4" 3/8" 4 10 20 40 60 100 200 0 10 ___ ___ ___ ___ • 20 -4----- __ m 40 z —I ----4 50 -----\------ 60L> 70 80 90 - _ 798' i 1 - == I rTT-T T •T TT rr i - ITTT I I I I I I I I I 100 987654 3 2 987654 3 2 987654 3 2 987654 3 987654 3 2 98765 4 3 2 100.0000 10.0000 1.0000 0.1000 0.0100 0.0010 0.0001 GRAIN SIZE IN MILLIMETERS LOCATION SYMBOL • R-Value CLASSIFICATION #16 Embarc. Ln. - Sta. 10+40 - 12+40 15 Silty Sand (SM) with some clay #17 Embarc. Ln. - Sta. 13+00 - 15+50 LI LI Silty Sand (SM) with some clay #18 Embarc. Ln. - Sta. 15+50 - 18+76 Silty Sand (SM) with little clay