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Home My WebLink AboutCT 72-03; TRI-CITY AUTO PLAZA; COMPACTED FILLED GROUND FINAL REPORT; 1973-04-04. ' , .' BENTON ENGINEERING, INC . PHILIP HENKING BENTON PRESIl)Et'lT • CIVIl. ENGINEER Mr. Howard Hassett c/o Bridge fv1c;>tor Inn 11 03 North Hill Street Oceanside, California 92054 APPLIED .SOIL MECHANICS -FOUNDATIO'NS 6717 CONVOY COURT SAN DIEGO, CALIFORNIA 92111 April 41: 1973 SubJect: ProJect No. 72-10-3D Final Report on Compacted Filled Ground T ri -C i ty Auto Plaza And Plaza Del Norte Carlsbad, California Dear Mr. Hassett: TEI.EPHONE (714) 565.19.55 This is to report the results of tests and observations made in order to inspect the compaction of filled ground placed on certain areas ~f the Tri-City Auto Plaza and on th~ right half of Plaz'a Del Norte between lri-City Auto Plaza and Pglomar Airport Road in Carlsbac{, Calif- ornid. The fills were placed during th~ period between October 10, 1972 and Ntarch 19, , 1973. The approximate'areas and depths of filled ground placed under our inspection in accordance with the approved specificafions are shown on the aftached Drawing No.1, entitled "loca~ . tion· of Compacted Filled Ground. II The grading plan used for the placement of filled ground was prepared by Associated Engineers. The final results of Test Nos. 1 to 270, inclusive, were presented in our report dated Morch 1~, 1972. The results of tests taken during the final site grading, Numbers 271 to 277, inclusive, taken on March 19, 1973, are presented on the atta,ched page 9 of the "Table of Test' Results, II revised March 23, 1973. The approximate locations ,at which the tests were taken on the Tri-City Auto Plaza sHe ar~ shown on Drawing, No. 1. Tests taken on Plciz<:J Del Norte, south of 1ri-City Auto Plaza, are located according to street stationing. The labora- tory determinations of the ~aximum dry densities and optimum moisture contents of the major fill materials are presented on pose 10 under the IILaboratory Test Results.1I Some of the maxi- mum dry densities shown in the "Table of Test Resultsll were combinations of these. Existing loose or very moist to saturated soils wete removed as required at certain locations in order to place the compacted filled ground on natural soil:S suitable for support of the proposed structures and/or filled ground. It should be noted that some loose soils have been stockprled in mounds above the original ground surface on portions of Lots 6 and 7. Proie~t No. 72-10-30 e Tri-City Auto Plaza Carlsbad, Cal ifomla -2-April 4, 1973 The final results of tests and observations indicate that the compacted filled ground within the. approved shaded areas shown on Drawing No.1 has been pl.ac~d at 90 percent of the maximum dry density or greater. Footings placed on filled ground, uniformly compacted to at least 90 percent of maximum dry density, may be designed in accordance with the recom- mendations presented in our reports on Prol~ct No. 72-S'-21A, dated September S, 1972 and October 16, 1972. If footings are placed closer to the exposed slopes than 5 feet inside the top of compacted filled ground slopes, these should be deepened one foot below a 1 1/2hori- zonfal to 1 vertical line projected outward and downward from a point 5 feet horizontally in- side the top of compacted filled ground slopes. Respectfully submitted, BENTON ENGINEERING, INC. By. -d? c::? ~ R. C. Remer ReYieWed~~ IPH.8n~iVfi?neer . Distr: (5) Addressee (1) Associated Engineers (1) Fiest, Vetter, Knauf and Loy Attention: Mr. R. Knauf . . --"-_ .. ~ " ---.~ .. -.... Pro fect No. 72 -1 O..;.ao • -9-• March 121; 1.973 _ -.- -Tri -City Auto Plaza Revised March 23, 1973 . "' TABLE OF TEST RESULTS (CONT • .) r .) -Approx-Depth Maximum imate of Fill Field Dry Dry Test Location at Test Moisture Density DensIty Percent No. Lot. No. in Feet % dry wt Ib/cu ft Ib/c_u ft -Compaction Remarks 24i 1 0.0 10.4-120.8 12.9.4 -93.2 Finished Grade 242 Sta 42 + 50 1.5 10.8 124.1 127.2 97.5 243 Sta 43 + 50 1.0 10.4 125.2 127.2 98.4 244 Sta 44 + 50 1.0 10.6 124.8 127.2 98.0 245 Sta 45 + 50 1.0 10.8 123.4 127.2 97.0 246 Sta 46 + 50 1.0 10.9 125.4 127.2 98.5 247 Sta 47+ 50 1.5 7.1 127.2 127.2 -100.0 248 Sta 31 + 50 1.0 8.8 123. 1 127.2 -96.6 249 Sta 32 + 50 1.0 8.1 124.1 l27.2 97.4 250 Sta 33 + 50 1.0 8.6 124.2 127.2 97.5 251 Sta 34 + 50 1.0 9.4 118.8 125.5 94.6 252 Sta 35 + 50 1.0 9.2 12308 129.4 95.6 253 Sta 36 + 00 2.5 8.9 123.8 129.4 95.6 FInished Grade ~ 254 Sta 37+ 00 1.8 9. 1 124.8 129.4 96.3 Fin-tined Grade ! 255 Sta 38 + 00 1.5 8.5 120.2 125.5 95.7 FInished Grade 256 Sta 39 + 00 1.5 8.6 121.5 125.5 96.9 Finished Grade 257 Sta 40 + 00 1.0 9.1 119.-6 125.5 Finished Grade ... -" -95.3 258 Sta 41 + 00 2.0 9.3 122.2 125.5 9705 Finished Grade 259 Sta 47+50 1.0 10.3 121.5 125.5 96;9 FinIshed Grade 260 Sta 48 + 50 1.0 9.9 121.-8 125.5 97.0 Finished Gracie 261 Sta 49 +-50 1.5 9.5 121.8 125.5 97.0 Finished-Grade 262 Sta 50 + 50 100 9.7 121. 1 125.5 96.5 Finished Grade 263 Sta 52 + 00 1.8 9.6 120.2 -125.5 95.7 Finished Gracie 264 Sta 53 + 50 1.5 8.9 126.2 129.4 97.5 FinIShed Gracie 265 Sta 55 + 00 1.5 8.8 124.8 129.4 96.,4 Finished Gracie - 266 Sta 56 + 50 2.5 9.7 124. 1 129.4 95.9 Finished Grade 267 Sta 58 + 00 2.5 8.2 123. 1 129.4 95.2 Fhiished Grade 268 Sta 32 + 00 3.0 10. 1 123.5 129.4 95.4 FInished Grade 269 Sta 33 + 00 3.0 9.7 122.4 125.5 97.5 Finished Grade 270 Sta 34 + 00 3.0 9.2 124.7 129.4 96.3 Finished Gracie 271 3 8.0 11.1 121.9 128.6 94.9 Finished Grade 272 2 8,.0 11.9 118.9 128.6 92.5 Finished Grade 273 ' 2 6.0 11.9 1l7~9 -128.6 91.7 Finished Grade 274 1 6~0 1"1.4 117.3 128.6 '91.2 Fini~hed Grade 275 2 6;0 10.9 119.Z 128.6 93.1 Finished Grade 276 3 8.0 11.7 116.2 128.6 90.5 Finished Grade_ 277 2 6.0 11.6 117.7 128.6 91.5 Finished Grade- PI of - BENTON ENGINEERING. INC. . , Proiect No. 72-·10-30 tit Tri<ity Auto Plaza -lO-March 12, 1973 LABORATORY.TEST RESULTS the maximum dry densities and optimum moisture contents of the major ft.1I materials as determined by the A.S.T.M. D 1557-66T method, that uses 25 blows of a 10 pound rammer falling from a height of 18 inches on each of 5 layers in a 4 Inch diameter 1/30 cubic foot compaction cylinder, are presented as follows: Soi I Description Dark bl'Qwn stlty fine to medium sand Red-brown clayey fine to medium sand Brown silty fine to medium sand Brown silty fine to medium sand BrGwn slightly stlty fine to medium sand Brown slightly stlty fine to medium sand light brown slightly silty fine to medium sand BENTON ENGINEERING. INC. Maximum Optimum Ntois- Dry Density ture Content Ib/cu ft % dry wt 129.4 127.2 125.5 132.6 127.0 128.6 120.8 804 10.8 9.2 7.8 8.5 8.8 9.0