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Home My WebLink About3156; JEFFERSON STREET BIKE PATH; IN PLACE DENSITY TESTING; 1995-05-22KLEIN FELDER May 22, 1995 Project No. 51-1791-00-018 RECEIVED 11995 CITY OF CARLSBA'' Mr. Al Ludwig City of Carlsbad Engineering Department 2075 Las Palmas Drive Carlsbad, California 92009-4859 Subject: Report of in-Place Density Testing Project: Jefferson Bike Lane Carlsbad, California Contract No. 3156 Federal Project No. 11-SD-0-Cbd Dear Mr. Cook: . In accordance with your authonzation, we have performed in-place density testing services associated with retaining wall construction and roadway construction for the Jefferson Street Bike Lane construction project in Carlsbad, California. The scope of our services consisted of in-place density testing of.retaining wall backfill sections, subgrade, aggregate base and asphalt paving; laboratory tests for moisture-density curves of the fill, backfill, subgrade, and aggregate base; laboratory tests for maximum density of asphaltic concrete; and preparation of this summary of test results. In-place density testing was performed on a part-time, "as-called" basis at the direction of the City's construction inspector. Our services were performed from March 22, 1995 through April 11,1995. The maximum dry density and optimum. moisture content,of samples of fill, backfill, subgrade,,and base materials were evaluated in our laboratory in general. accordance with ASTM test procedure D 1557. The maximum density of asphaltic concrete was evaluated in our laboratory in accordance with Caltrans test methods 304 and 308. The results. of the, tests are presented in Table 1 entitled "Maximum Density Test Results." ....... . :.. . . . .. In-place density tests of materials were performed rn general accordance with ASTM test procedure D 1;556. (sand cone method) and test.proceduresASTM.D 2922 and ASTM D .301.7. (in-place density and in-place moisture content, respectively). Project specifications called for 95% relative compaction of subgrade within the upper six inches. At the direction of the city's construction inspector, the 95% relative compaction of subgrade 'was waived in lieu of accepting 90% relative SCO 1\48SCRP95.DOC Copyright 1995 Kleinfelder, Inc. Page 1 of 2 51-1791-00-018 KLEINFELDER 9555 Chesapeake Drive, Suite 101, San Diego, CA 92123 (619) 541-1145 compaction for the subgrade. The results of these tests at the specified location tested are presented in Table 2 entitled "Compaction Test Summary." Testing was performed at the direction of the City of Carlsbad's inspector, and results of the in- place density tests were generally reported to the inspector in the field at the time of testing. Our tests were provided on a part-time basis. Therefore, we cannot comment that all materials have been placed and compacted in accordance with the project specifications. Our services have been performed in accordance with the generally accepted testing practices that exist in the Carlsbad area at this time. No warranty, express or implied, is made. We appreciate the opportunity to be of service. If you have any questions or need additional information, please contact the undersigned. Sincerely, KLEINFELDER, INC. George M. Binger III Staff Engineer GMB:sjc SCOI\48SCRP95 .DOC Copyright 1995 Kleinfelder, Inc. Page 2 of 2 51-1791-00-018 KLEINFELDER 9555 Chesapeake Drive, Suite 101, San Diego, CA 92123-6300 (619) 541-1145 k9 KLEIN FELDER TABLE 1 MAXIMUM DENSITY TEST RESULTS Project Name: Jefferson Bike Lane Project No. :5 1-179 1-00-0 18 Carlsbad, California SCO 1\43SCLR95.DOC Copyright 1995 Kleinfelder, Inc. 51-2076-01 I9 KIEINFELDER TABLE 2 COMPACTION TEST SUMMARY Project Name: Jefferson Bike Lane Project No.: 51-1791-00-018 Carlsbad, California and TECh TE' I N'. RI:1FST NO. LOLV lIONS ELEV. (IT DIfl DENSI fl tICh MOIST CONT. (..h Rh. COMI' (%h I SOIL I TVPL RETESTED fl\ NO REMARIS 3/22 I Jefferson Crihwall 38+00 FG -4.0 105.4 14.6 82 I ' 4 FAIL 3/22 2 Jefferson Bike Lane 32+70 FSG 116.9 8.6 91 1 PASS /22 3 Jefferson Bike Lane 26+75 FSG 103.3 19.0 81 1 23 FAIl. 3/22 4 1 Cribwell 38+00 -4 114.7 12.8 90 .1 PASS /24 5 Cribwell 38+70 -2 115.3 12 90 1 PASS - 3/24 6 Cribwell 37+60 -2 116.5 11.8 91 1 PASS .3/27 7 Cribwell 37+20 -2 116.6 112 91 1 PASS 3/27 8 Cribwell 36+80 -3 114.9 12.0 90 1 PASS 3/28 9 Cribwell 36+50 FSG 117.5 8.1. 92 1 PASS* 3/28 10 Cribwell 36+20 FSG 122.7 9.3 96 . I PASS 3/28 11 Cribwell 36+00 FSG 115.4 10.2 94 2 PASS 3/28 12 Bike Lane 21+75 FSG 1.04.1 19.1 83 4 14 FAIL 3/31 13 Bike Lane 20+00 FSG 117.9 6.8 92 1. PASS* 3/31 14 12 BikeLane2l+50 FSG 114.3 5.8 90 4 PASS 3/31 15 Bike Lane 23+25 FSG 110.1 12.9 87 3 24 FAIL 3/31 16 Bike Lane 25+50 FSG 110.5 12.7 88 3 FAIL 3/31 17 . Bike Lane 28+05 FSG .116.2 9.4 91 1 PASS* = 18 Bike Lane 31+25 FSG 110.2 12.0 87 - - FAIL 3/31 19 Bike Lane 33+75 FSG 113.8 5.1 90 - - PASS 4/4 20 Bike Lane 37+00 FSG 122.0 7.5 96 - PASS 4/4 21 Bike Lane 33+20 FSG 120.1 1 7.1 94 - - PASS* 4/4 22 Bike Lane 29+00 FSG 112.3 8.2 89 - - 30 FAIL 4/4 23 3 Bike Lane 27+00, FSG 115.2 8.2 91 - - PASS 4/4 24 15 Bike Lane 24+25 FSG 110.9 14.2 88 - - 29 FAIL 4/4 25 Bike Lane 21+50 FSG 112.5 9.0 89 3 28 FAIL 4/4 26 South Side 24+15 FSG 115.9 11.4 1 92 3 PASS* 4/4 27 South Side 45+50 FSG 115.1 13.3 92 4 PASS* 4/5 28 25 Bike Lane 21+50 FSG 113.5 8.9 90 3 PASS 4/5 . 29 24 Bike Lane 24+25 FSG 114.1 10.6. 90 3 PASS* 4/5 30 22 Bike Lane 29+00 FSG - 13.0 10.2 90 3 PASS* 4/7 31 Jefferson St. 37+40 FBG = 31.1 3.6 95 5= PASS 4/7 32 Jefferson St. 34+50 FBG 31.3 - 5.2 1 95 5 - PASS 4/7 33 Jefferson St. 31+50 FBG 131.3 2.9 95 - - PASS 4/7 34 __ Jefferson St. 28+50 FBG 130.6 4.1 95 1 - - PASS 4/7 . 35 . Jefferson St. 25+50 FBG 132.3 4.3 96 - PASS (Table Continued) Notes: FSG = Finished Subgrade FBG = Finished Base Grade FBC = Finished Base Course (Asphalt) * This test did not meet the initial project requirement of 95% relative compaction, but was accepted at the direction of the city's engineering department. Accepted engineering and testing procedures were used for these tests. The above data is presented for information purposes only. In the absence of continuous observations of our personnel at the site, we can not express an opinion as to the adequacy of site preparation or overall fill compaction. We do not undertake the guarantee of construction, nor do we relieve the contractor of his primary reponsibility to produce a completed project conforming to the project plans and specifications. SCO I \43 SCLR9S .DOC Copyright 1995 Kleinfelder, Inc. 51-2076-01 KLE I NFELDER Project Name: Jefferson Bike Lane Project No.: 51-1791-00-018 Carlsbad, California TABL Notes: FSG = Finished Subgrade FBG = Finished Base Grade FBC = Finished Base Course (Asphalt) Accepted engineering and testing procedures were used for these tests. The above data is presented for information purposes only. In the absence of continuous observations of our personnel at thesite, we can not express an opinion as to the adequacy of site preparation or overall fill compaction. We do not undertake the guarantee of construction, nor do we relieve the contractor of his primary reponsibility to produce a completed project conforming to the project plans and specifications. SC01\43SCLR95.DOC Copyright 1995 Kleinfelder, Inc. 51-2076-01