The URL can be used to link to this page

Home My WebLink AboutMS 15-14; GARFIELD STREET CONDOMINIUMS; FINAL SOILS REPORT; 2020-03-13 March 13, 2020 CTE Project No. 10-14059T Front Row Development, LLC Attention: Mr. Tim Clark 1161 W. Sunrise Place Chandler, Arizona 85248 C/O Mr. Randy Smith, Smith Prophet Solutions Via Email: randy@prophetsolutionsinc.com Subject: Final Letter for Observation and Testing of Compacted Fill Garfield Street Condos 3450 Garfield Street Carlsbad, California Mr. Clark: As requested, Construction Testing & Engineering, Inc. (CTE) has performed the necessary observation and testing of fill materials during recent earthworks at the referenced site. This letter is provided as certification that the recent fill placement has been conducted in general conformance with the recommendations specified in the approved project soils report referenced above. In addition, CTE observed the excavations for the soldier beams and footings. Based on our observations the following was noted: •Excavations appeared to be dimensioned as per or greater than indicated on the approved project plans and extend to appropriate bearing strata. •The bottoms of all foundation excavations appeared or probed dense indicating adequate bearing capacity. •The materials exposed at the bottom of the foundation excavations appeared to be dense native materials as anticipated by the project soils report. •The proposed foundations are considered suitable for support of the proposed improvements. Field-testing of the compacted material in the AC pavement sections and subgrade preparation was also performed in accordance with ASTM D-6938-17 (nuclear method). Results of the field-testing indicate that fill materials were compacted to a minimum of 90 percent (or 95 percent, depending on location) of the laboratory maximum dry density as determined by test method ASTM D-1557. Tabulated results of the field compaction testing performed are provided in the attached Table I, “Compaction Test Summary”. The laboratory maximum density results are provided in Table II, Construction Testing & Engineering, Inc. Inspection I Testing I Geotechnical I Environmental & Construction Engineering I Civil Engineering I Surveying 1441 Montiel Road, Suite 115 I Escondido, CA 92026 I Ph (760) 746-4955 I Fax (760) 746-9806 I www.cte-inc.net Final Letter for Observation and Testing of Compacted Fill Page 2 Garfield Street Condos 3450 Garfield Street, Carlsbad, California March 13, 2020 CTE Job No.: 10-14059T “Laboratory Test Results.” The attached Figure 1 provides the approximate locations of compaction testing. The opportunity to be of service is appreciated. If you have any questions, please do not hesitate to contact this office. Respectfully submitted, CONSTRUCTION TESTING & ENGINEERING, INC. Rodney J. Jones, RCE #84232 Senior Engineer TABLE I COMPACTION TEST SUMMARY Job Name: Garfield Street Condos Job No. 10-14059T Job Address: 3450 Garfield Street, Carlsbad, California 92008 Date: 2/5/2020 Date Test Location Elevation Density Moisture Relative Soil No. or Depth pcf Content Compaction Type Feet % Dry % Weight 1/23/2020 1 3550 Garfield Street Subgrade SG 109.8 13.7 90% 1 1/23/2020 2 3550 Garfield Street Subgrade SG 111.6 13.8 92% 1 1/23/2020 3 3550 Garfield Street Base Base 139.4 12.8 100% 2 1/23/2020 4 3550 Garfield Street Base Base 140.5 13.8 100% 2 1/23/2020 5 3550 Garfield Street 3/4" AC AC 146.6 - 98% 3 1/23/2020 6 3550 Garfield Street 3/4" AC AC 148.2 - 99% 3 1/23/2020 7 3550 Garfield Street 1/2" AC AC 143.8 - 97% 4 1/23/2020 8 3550 Garfield Street 1/2" AC AC 141.9 - 95% 4 1/27/2020 9 Native Soil -1.5 120.6 12.1 97% 5 1/27/2020 10 Base 0.7 130.6 10.1 96% 2 1/27/2020 11 AC First lift 0.3 144.5 - 97% 4 1/27/2020 12 AC Final lift FSG 145.3 - 98% 4 ** TEST FAILED, SEE RETEST 1 TABLE II LABORATORY TEST DATA Job Name: Garfield Street Condos Job No. 10-14059T Job Address: 3450 Garfield Street, Carlsbad, California 92008 Date 2/5/2020 Maximum Optimum Sample No.Dry Density Moisture Soil pcf Content Description %wt 1 121.8 10.9 2 136.1 8.5 3 150.1 - 4 148.7 - 5 124.4 9.5 Silty Sand Class 2 Base Reddish brown fine Sand AC Compaction AC Compaction 1