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Home My WebLink About; Palomar Airport Road and Lowder Lane; Soils Report; 1970-03-16- .- - - - - - - - -. - WOODWARD - CLYDE & ASSDCIATES wIasul.llNa WIL urn fouNoAIloN E”OlnEolS ~,NDQEol.oQ,sTs 3461 Kulu slm( March 16,197O 0." D(w Project No. 69-341 cdlmnl* 92110 (710 224-2911 Paul Ecke Ranch P. 0. Box 488 Encinitas, California 92024 Attention: Mr. E. Maurer SUBBASE AND BASE COMPACT10 PALOMAR AIRPORT ROAD m CARLSBAD, CALIFORNIA RECEIVED MAR li 1370 CITY OF CARLSBAD Engineering Department At your request, we have provided engineering services in connection with the widening of the roadway pavement sections at the subject project site. These services consisted of preconstruction consultation with the grading and pavinq contractor resarding pavement design sec- tions, materials, grading, and compaction requirements, and of taking field density tests of emplaced subbase and base course materials upon call of the contractor during construction. Site preparation, and'subbase and base course placement, compaction, and testing were done durina the period of February 12 to February 27, 1970. Results of field density tests indicate that subbase course ma&eri,alshave been compacted to an average relativGX?iipaction of approximately 95Jp%?rco.nt, with a minimum relative compaction of 94 percent; and tfiat base course materials have been placed at a minimum relative compaction-% 95 percent. The results of field density tests *- ~~. ~~~f-~relattve'~~~mpactlon, expressed as a percentage of maximum lab- oratory density, are given on the attached forms. Materials used for subbase and base courses were obtained from the.,t$sa Pit and the Thibodq Pit, respectively. Results of Mechanical Analysis ~(GratRSiXW~bution) and Sand equivalent tests on representative samples of the materials from both these pits, as well as an R-Value test and a Laboratory Compaction test to determine maximum dry density and optimum moisture content for the Thibodo Pit materials, were reported in our letter of December 23, 1969. Results of the Laboratory Compaction test of representative Mesa Pit materials, which was made subsequent to the decision to use these materials as subbase, in order to deter- mine moisture-density relationships, maximum dry density and optimum moisture content, are attached herewith. ENGINEERING DEPT. LIBRARY City of Carlsbad 2075 Las Palmas Drive Carl&ad CA 92009459 - - - .- - - - - - - - - - - . Palomar Airport Road and Lowder Lane Proejct No. 69-341 Page 2 Based on the test results and on our observation of the compacted materials, it is our opinion that the subbase and base courses have been placed in general conformance with our recommended pavement design Alternates 3, as presented in our letters of November 20 and December 23, 1969. The conclusions and opinions drawn from the tests and site inspections aoply to conditions as represented at the date of our final insoection. Fe can acceot no responsibility for any subsequent changes which may have occurred during excavation for and emplacement of curbs, or by failure of others to properly repair any damaaes which may have been caused by uncontrolled action of water prior to placement of the asphalt surface course. If we can be of further service, please contact us at your convenience. EHP/JAH/LJL/pk Attachments I 4) Paul Ecke Ranch 1) Sim J. Harris (1) Associated Engineers (1) City Engineer, Carlsbad WOODWARD-CLYDE 15 ASSOCIATES - .~. .- _ .._ ,~. -- c COMPACTION TEST RESULTS - Jo9 NAYC PALOEIAR AIRPORT ROAD & LOWDER LANE D*TCR~-~~~D March 16,197O Jam Nuum!n 69-341 - DATESCOVERED February 20 through.27, 1970 PAGE 1 oc 1 - =* ““EL m-n LOCAIIO” m.c”.T,0” my44;: ?uu, WOUTDl” muAll”* mu.m m*.m co”~Ac?Io* 0, er.rCl l D.Iw?. ?cSt cs, * 0, #Al. Dum. - FEB 20 - - FEB 27 - - .- - - - - - 1 2 3 4 5 ! i 5 10 8 PALONAR AIRPORT ROAD STA: 28+18 26+26 LOWDER LANE STA: 4+15 1+28 4+50 2+11 PALOMAR AIRPORT ROAD STA: 23+64 26+26 LOWDER LANE STA: 460 PALO!%R AIRPORT ROAD STA: 26+26 Subbase 6.9 7.5 Top Of 6.9 Base 8.1 E 7.5 8.7 117.0 123.5 95.0 118.0 123.6 95.6 116.0 123.5 94.0 116.0 123.5 94.0 119.8 129.0 93.0 124.2 129.0 96.3 124.5 129.0 96.5 118.5 129.0 91.8 126.5 129.0 98.0 123.2 129.0 95.5 WOODWARD - CLYDE & ASSOCIATES P^--dill c.i, *“a I”.ul”r‘.m F...i,“.” a”.4 cddnn”, -. - - - - - - - - - - - - - - - - 130 17.0 110 loo 0 looo 100 IO I.0 0.1 0.01 O.Wl GRAIN SIZE IN HILLIHETERS COBBLESIG;A;E\ ic, zNl f /SILT b CLAY I PLASTICITY CHARACTERISTICS b! I I 1 Liquid Limit, 1. I-l I I Plasticity Index. % Classification by Unified Soil _ Classification System SWELL TEST DATA 1 Initial Dry Density. pcf Initial Water Content. 5 Load. psf Percent Swell 1 SPECIFIC GRAVITY MAXIMUM DRY DENSITY. pcf I&ZERO AIR VOIDS CURVES Subbase Material -. _ ~~ LABORATORY CC&f'ACTIffl TEST FILL SUITABILITY TESTS LABORATORY CBIPACTION lfST umoo:ASTM D-1557-64T PALOMAR AIRPORT ROAD AND LOWDER LANE WOOCIJARD *CLYDE & ASSOCIATES CONSULTING SOIL ENGINEERS AND GEOLOGISTS SAN OIEGO. CALIFORNIA DR. BY: ALS ISCALE: -- IPROJ. no: 69-341 CK'D BY: ,?!,r IDATE: 3/16/70 paae 1 of a TESilNG ENGINEERS, INCORPORATED 3467 KURTZ ST.. P.O. BOX 80985. SAN DIEGO. CA S213S (714)222-,185 OAKLAND SANTA CLARA LOS ANGELES SAN DIEGO - - LA80RATORY NUKBER SD28-107 D*TE January 16, 1973 JO0 DATA: File No. 507. Job No. 73-103-4 SAMPLE DATA: S/N 1. Elm Avenue and Elm Avenue Ciossing Woodward-Gizicnski & Associates 3467 Kurtz Street --San Diego, California 92110 -RADING ANALYSIS =- - - 2” - ‘A” .hW -* t4 _- PERCENT PASSING AS RCYD. AS UsED 100 100 el6 L”D :-0 l tDo - -- 00 ‘EM*RKS: - 1 cc. R.R. crossing. Submitted to the laboratory January 12, 1973. I- R A 1 s COMPACTOR PRfS5 P.S.,. M0E.T b COMP&CTION . % 350 350 8.7 8.3 DEN&V . n/C”. FT. R."*L"E *T*B,LOMETER EXUD. PRESSURE . P.S.,. STAS. THKK . FEET 125.5 125.2 78 83 260 610 --- _-- EfcPIN. PRESS. T”lCK.PEET 1 ___ 1 ___ 1 T. 1. (ABOUMEDI = ._--- VALUE DAT* c D E q----j- 124.4 78 BY STAB. @ 300 P.S.,. EXUD. = 78 s:: BY EXPANSKm PRESSURE = Dti ---- AT EQU,L,BRIUM = 78 I SAND EQ"I"ALENT = 22 _~_ DURABILITY (Co~ns~, = LIQUID LlMlT = DURABILITY (FINE, = PLA8TIC LlMlT = 11 P. 1. = - TESTING ENGINEERS. INC. JDB:am