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CT 80-25; ANDEN MEADOWBROOK; STREET SUBGRADE AND BASE COMPACTION; 1983-07-18
" '''k • EBER,HART & STONE, INC. GEOTECHNICAL CONSULTANTS 2211 E. WINSTON ROAD. SUITE F • ANAHEIM. CA 92806 • (714) 991 -0163 6353 EL CAMINO REAL. SUITE C • CARLSBAD. CA 92008 • (714) 438-9416 The Anden Group 6544 Corte Montecito Carlsbad, California 92008 Attention: Mr. Bob Fish • DAN R. E~ERHART. CEG GERALD L. STONE. RCE IN.O. 1120P July 18,1983 Subject: Street subgrade and base compaction, Paseo Frontera, Xaha Way, and widening of existing Alga Road, EI Fuerte. Street and Unicornio Street, Tract CT 80-25, Carlsbad, California. Reference: Gentlemen: Report by Eberhart & Stone, Inc., dated December 31, 1982 (W.O. 1120)'. Presented herein is a review of the testing and observations provided by this firm for street subgrade and base compaction at the subject site. COMPACTION PROCEDURES Subgrade and base compaction under the purview of this report was accomplished by DBL Construction. Testing of the subgrade and base was accomplished during the period of October 13, and December 16, 1982. Prior to the placement of disintegrated granite or aggregate base, the exposed subgrade was scarified, moisture-conditioneQ, and .compacted in place. Several isolated areas which were wet and lor soft from seasonal rains were removed and replaced with aggregate base. Subsequent to the placement of disintegrated granite andlo.r aggregate base on the compacted subgrade., the base materials were moisture-conditioneQ and compacted in place. Compaction of subgrade and base materials was accomplished by rolling with a vibratory smooth~faced steel drum roller and heavy rubber-tired earthmoving equipment. SOIL TESTING Field Field density tests were taken at subgrade and base grade elevations to determine compliance with the recommended standards. These tests were taken in accordance with ASTM standards for the sand cone and nuclear gauge methods of density testing (ASTM D 1556 and D2922, respectively). Results of the field density testing are presented in Ti3ble I, and approximate locations of the tests are shown. on the accompanying street improvement plans prepared by Hunsaker & Associates and by .Rick Engineering Company. For comparison of field density tests to laboratory standards, visual and tact He identifications were made of the materials tested. • (J { " • Anden -2-w.o. 1120P ~aboratory For the materials considered representative of the major soil types placed as compacted fill, maximum density arid optimum moisture content determinations were made in accordance with ASTM D 1557-70. Results of the laboratory testing are presented in Table II. OPINIONS Opinions in this report are based upon this firm's testing and observations of the subject subgrade and base compaction, as well as upon profession,,!1 judgment. The geotechnical aspects of subgrade and base placed under the purview of this report are in compliance with this firm's recommendations and the various codes and/or standards establisheo by the City of Carlsbad. Summary Testing and observations were provided, and Opll110nS were developed, in accord- ance with generally accepted soil engineering principles and practices. No warranty is expressed nor implied. The presence of the geotechnical consultant at the site was to provide the developer with a continuing source of professional advice and opinions, based upon testing and observations of the contractor's wo,rk, and did not include superintending nor supervision. The opportunity to work with you on this project is appreciated. This report is subject to review by the controlling governmental body. Respectfully submitted, EBERHART & STONE, INC. J-l tJ t ;#!: .iJ.JZ14tC;t :' I •• ~ ~ t-;~~ Gerald . Sto e Vice President RCI: 32233 GLS/DRE/bw and Enclosures Table I -Summary of Field Density Test Results Table II -Summary of Laboratory Test Results Street Improvement Plans (pocket enclosl,.lres) Distribution: (4) Addressee EB~RHART & STONE, INC. Anden TABLE I w.o. 1120P SUMMARY OF FIELD DENS.ITY TEST RESULTS 1"'. "- TEST MOISTURE DRY DEN. REL.COMP. SOIL .,/' NO. NOTE DATE LOCATION ELEVATION % pcf g. TYPE 0 SG 1 10-13-82 EI FUerte Street Subgrade 16 104 92 P SG 2 10-13-82 EI Fuerte Street Subgrade 11 98 87 P SG 2 r 10-13-82 EI Fuerte Street Subgrade 14 103 91 P SG 3 10-15-82 Unicornio. Street' Subgrade 18 ·98 91 R SG 4 10-15-82 . Unicornio Street Subgrade 15 108 90 J SG 5 10'-15-82 Unicornio Street Subgrade 14 109 91 J SG 6 10-15-82 Paseo Frontera Subgrade 13' 110 90 L e' SG 7 10-16-82 Xana Way Subgrade 14 102 91 0 SG 8 10-16-82 XanCi Way Subgrade 14 106 90 E SG 9 10-16-82 Xana Way Subgrade 16. 112 93 N SG 10 10-16-82 . Xana Way Subgrade 15 109 91 N SG-ll 10-16-82 Xana Way Subgrade 13 104 87 N SG 11 r 10-18-82 Xana Way Subgrade 16 109 91 N SG'12 lQ-18-82 Via Alcazar Subgrade 16 104 93 0 SG 13 1()-18-82 . Via Alcazar Subgrade 12 111 91 L SG 14 1'0-18-82 Corte Montecito Subgrade 13 110 90 L SG 15 lO-18-82 Corte Montecito Subgrade 17 105 94 0 SG 16 10-18-82 Corte Montecito Subgrade 16 103 92 0 SG 17 & 18 Test numbers inadvertently omitted from , sequence. SG 19 10-27'"'82 Alga Road Subgrade 19 99 92 R SG 20 10-27-82 Alga Road S~bgrade 20 100 93 R SG 21 10-27-82 Alga Road Subgrade 18 98 91 R SG 22 10-27-82 Alga Road Subgrade 15 106 94 P SG 23 10-27-82 Alga Road Subgrade 16 110 . 92 N SG 24 10-27-82 Alga Road Subgrade 15 114 95 N t'"", SG 25 10-27.-82, Alg~ Road Subgrade 18 97 90 R SG 26 10-27-82 Alga Road Subgrade 16 ' 109 91 N . SG 27 10-27-82 Alga Road Subgrade 17 104 91 G "'-<. SG 28 10...,27-82 Alga Road Subgr<;lde 16 ' . 106 93 G , J Anden TABLE I W.O.l1'20P SUMMARY OF FI ELD DENSITY TEST RESULTS ,. ... ~ : TEST MOISTURE DRY DEN. REL.COMP. SOIL " .... NO. NOTE DATE LOCATION ELEVATION % ..Qcf % TYPE L . SG 29 12-2-82 Via Barona Subgrade 16 115 94 L SG 30 12.,..2-82 Via Barona Subgr.ade 17 105 ' 86 L SG 30 r 12-2-82 Via Barona Subgrade 18 110 90 L SG 31 l2-2-82 Via Sarona Subgrade 15 111 91 L SG 32 12-2-82 Paseo Arboleda Subgrade 16 no 90 L Subgrade , SG 33 12-3-82 Xana Way 16 107 86 Q SG 34 12-3-82 Xana Way Subgrade 16 108 88 ~.el SG 35 12-3-82 Xana Way Subgrade 15 113 91 SG 36 12-3-82 Xana Way Subgrade 17 108 90 N SG 37 12-3-82 Xana Way Subgrade 18 104 87 N SG 38 12-3-82 Xana Way Subgrade 20 110 92 N SG 39 12-3-82 Xana Way Subgrade 18 108 90 N SG 33 r 12:-3-82 Xana Way Subgrade 15 113 94 N SG 34 r 12-3-82 Xana Way Subgrade 14 115 96 N SG 37 r 12-3-82 Xana Way Subgrade 16 99 92 R SG 40 12-3-82 Xana Way Subgrade 16 108 90 N SG 41 12-7-82 Alga Road Subgrade 19 100 93 R SG 42 11-7-82 EI Fuerte Street Subgrade 14 111 91 L SG 43 12-15-82 . Paseo Frontera Subgrade 14 116 95 L SG 44 12-15-82 Paseo Frontera Subgra<;le 14 115 94 L ,SG 45 12-15-82 Paseo Frontera Subgrade 12 113 94 N . ,- NOTE.: r = retest 'f~ "'< I .. Anden TABLE I w.o. H20P SUMMARY OF FIELD DENSITY TEST RESULTS fo" ...... . TEST MOISTURE DRY DEN. REL.COMP. SOIL ..... NO. NOTE DATE LOCATION ELEVATION % pcf % TYPE I ! B 1 10-21-82 Corte Montecito Base Grade 5 132 99 V B 2 10-21-82 Corte Montecito Base Grade, 6 121 90 V B 3 lO-21-82 Corte Montecito Base Grade 5 126 94 V B 4 10-21-82 Corte Montecito Base Grade 7 J22 91 V B5 10-21-82 Corte Montecito Base Grade 7 127 95 V B 6 10-21-82 Via Alcazar Base Grade 6 130 97 V B 7 10-21-82 Via Alca~ar Base Grade 6 128 96 ~-B 8 10-21-82 Xana Way Base Grade 4 119 89 B 9 10-21-82 Xana Way Base 'Grade 7 130 97 V B 10 10-21-82 Xana Way Base Grade 8 129 96 V B 11 10-21-82 Xana Way Base Grade 7 127 95 V B 12 10-21-82 Xana Way Base Grade 7 131 98 V B 13 10-21-82 Xana Way Base Grade 7 123 91 V B 2 r 10-21-82 Corte Montecito Base Grade, 6 133 99 V B 3 r' 10-21-82 Corte Montecito Base Grade 6 135 100+ V B 4 r 10-21-82 Corte Montecito Base Grade 8 127 95 V B-8 r 10-21-82 Xana Way Base Grade 5 127 95 V B 13 r 10-21-82 ' Xana Way Base Grade 7 127 95 V B 14 10-21-82 Unicornio Street Bas~ Grade 4 118 88 V B 15 10-21-82 Unicornio Street Base Grade 5 122 91 V B 16 10-21-82 Unicornio Street Base Grade 7 128 96 V B 17 10-21-82 Unicornio Street Base Grade 7 125 93 V B 18 10--2l-82 UnicorniQ Street Base Grade 7 130 97 V {e ' B 19 10-21-82 EI Fuerte Street Base Grade 8 126 91 U B 14 r 10-22-82 Unicornio Street Base Grade 5 127 -' 95 V B 15 r 10-22-82 Unicornio Street Base Grade 6 128 96 V B 17 r 10-22-82 Unicornio Street Base Grade 8 127 95 V B 19 r 10-22-82 EI Fuerte Street Base Grade 9 131 95 U B 20 10-22-82 EI Fuerte Street Base Grade 8 135 98 U ,\,. B 21 10-22-82 EJ Fuerte Ba,se Grade 9 134 97 U B ~~' 10-28-82 Alga Road ' Base Grade 7 132 96 I U '"" B 23 10-28-8i ' Alga Road Base Grade 8 135, 98 U B 24 10:-28-82 Alga Road Base Grade 8 131 95 U , B 25 10-28..,.82 Alga Road Base Grade, 10 132 96 U B 26 10'-28-82 Alga Road Bqse Grade 9 131 95 U --- Anden TABLE I W.O. 1120P <. SUMMARY OF FIELD DENSITY TEST RESULTS ~" ~ TEST MOISTURE DRY DEN. REL.COMP. SOIL ,.,.- NO •. NOTE DATE LOCATION ELEVATION % pef % TYPE B 27 10-28-82 .Alga Road Base Grade 9 135 I 98 U B 28 . 10-28-82 Alga Road Base Grade 8 131 95 U B 29 12-7-82 Xana Way Base Grade 5 121 90 V B 30 12-7"-82 Xana Way Base Grade 6 123 92 V B 31 12-7-82 Xana Way Base Grade 6 119 89 V B 32 12-7-82 Xana Way Base Grade 5 125 93 V e: B 33 12-7-82 Xana Way Base Grade 7 126 94 V B 34 12-7-82 Xana Way Base Grade 5 122 91 V B 35 12-7-82 Xana Way Base Grade 6 122 91 V B 29 r 12-7-82 Xana Way Base Grade 8 128 96 V B 30 r 12-7-82 Xana Way Base Grade 8 130 97 V B 31 r 12-7-82 Xana Way Base Grade 7 127 95 V B 32 r 12-7-82 Xana Way Base Grade 7 127 95 V B 33 r 12-7-82 Xana Way Base Grade 8 131 98 V B 34 r 12-7-82 Xana Way Base Grade 6 130 97 V B 35 r 12-7-82' Xana Way Base Grade 7 131 98 V . B 36 12-16-82 Paseo Frontera Base Grade 7 127 95 V B 37 12-16-82 Paseo Frontera Base Grade 8 123 92 -V B 37 r 12-16-82 Paseo Frontera Base Grade 8 128 96 V 'e ~~ NOTE: r = retest ~ ~:, . -,." .-~--.---------------------_ ... ----- ------------------------------------------L----------_. ~----- ---------------------~~-~-~--~ ~------• • Anden TABLE II SUMMARY OF LABORATORY TEST RESULTS SOIL TYPE E G J L N o P Q R U v SOIL DESCRIPTION (USCS) Silty fine sand, tan-brown, with shell fragments (SM) Fine sandy silt, light gray-green (ML) Medium sandy silt, tan-brown, with trace of clay (ML) Silty medium sand, tan-orange, with 5 iltstone fragments (SM) Silty fine to medium sand, brown (SM) Silty fine sand, tan-brown (SM) Silty fine sand, tan (SM) Silty fine to medium sand, tan-orange (SM) Fine to medium sandy silt, tan-gray (ML) Import -aggregate base, gray-brown (GP.) Import.,. disintegrated granite, red- brown (SP) EBERHART & STONE, INC. MAXIMl)M DRY DENS .. (pcf) 117.5 114.0 119.5 122.5 120.0 112.0 113.0 124.0 108.0 138.0 134.0 W.O. 1120P OPTIMUM MOISTURE ( %) 14.0 15.0 13.0 1-0.0 12.5 14 .• 5 15.5 11.5 18.0 8.0 6.5 r ......... 'v-_ ... hPn a =*'tryT 'W'?*: , mn~"""""'n""Clt ... ~._~ ....... ___ ._~ ___ .~~_~ I ~risalrd" ... .... 1tVt7'1t7-8 -~-:~-'~~'ci-8;;~·~:2S".~' ~ _____ "=~<J~~h-.~L:'_ r _ .P\IInNftc.~ .... s..r,...,.. ... : " I:" ""?"~ . n."", .. ,;, I HYDROlOGY CALCULATION SHEH '" t I&C~ /" $'JlHPS ) '7 ., i .- .... I .,. -~ ~ . jilfieer f or - lOOl .... · .............. VI.s:..'."';C .. loMna.CU .. ,.· ProjectlJ/ 'C~:>A . Freq . .It?jt"; ·Calculated by.5~&"".t...:7O:;;/.b-V=-.B'.a' . .,.. L ~ J f / f Con-ce~t(atloh ' cSLb 1ll~a Soil Land tt ,tc t ~ "e-DJ,~c~~.:'s.Qe· FlowPath Slop'e V. Hydraulics and ,ti'ev2~P-iJ POint De!.cnptlon.No .. r---:.\B-'l~i_~ GroupVse· min min inltlr 'I~: -. l" 1 . L''Igth f't 1ft ft Isec Notes "-!,';' t- 12:S:%~ ~v . /~oc?1' oil-2ft i.e.' 6.7 1;(1/;'1)1-;1r;t';;J ~ ... ) ;(,Lf : P V'5%~ 01;1 j, I ,t?' /j; 7 .. f. ?,'I, .' 21!C' 1.-::,(r)5 (.7 -·;42 ),6 1f,p 17 11-F ----tj,r /,,7 (7 ?tOT ~'-~D~--+,-..;:.....;.....r .. --+---- 'r--' "'/ . I . ~ . . -----I--+-. -,+ ........ ~--t--1P,p. IC~/,7.),.· (~tP::;;~" i. . 76::J" t!J/l25 tr' "£p !N/T/l.l. /I.'.'"E/iA-J /,) ), JI7 11 r 5,P U ,7 liJo"}j/~ ~~cR"'7..7''?'/ (f~)=-~ 7.' . r--Z7 . '. . . 2;6. ~, I ~ /J 15~ tJz.> 21 . . ~'.$'f,7 P hpt-/,',' 21'/' ,'7 611J;;9'.;~Qr01~j?#,t1'l/f,.2~V~7. " I A. . 6JG'. , . /16 : )~t? 5~tPJ.·· '.fit) . -. lft-6'ZI I? II F r-1/2; tJ .z 2f, 7. J,? . .Pi ~~ . . , J . : if ) p' > ,(IItP),. (l'0N>~ 1!.~;) -{ ,Y b t' l>J1~/, 'h/J /(I'/7.AL /fJ'{',L'1J lA..tr /6 J1 r 7t 7,(J 17. ~t'. ~h) ~~ f1.: ~ .~.?; I.' +%$ (~);-.'Z·7 _ .' . .' ....'... _ . 1(17$)" (fJ, IF;:.z~.;·'5~() A}I~7 7;0 > - 1;V117I1I.AJfI!A A~7 ~tg . t? 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Concentration t'e HYDROLOGY CALCULATION SHEET Wt/~/t'-gv . . . Sl1eet . 2~f Z Fr~q .. J&'.Y7' Calculated byf.e-&~/#ART Dale /r:; .... 71-CO ~ I ~ ~' Dii;c~~rs~e FI.o~tOfh Slope' .' V Hydraulics and /i};" 2wf!. in/hr I~ l I .~... l"igth ft Nt ft /-sec I Notes I . .' i ' Po,n' O •• e"'''Qn , '.,. I---< mw. ~. W/71Ai-IIR£:A v-l 5:2 . . t7 II1F' ,"M 'l,} , ,JtM 1¥:2.>1if.~};f ~. -.... ". C-7~O ~' & , :~. ' /tV;77At.I1JreA C:-l 0,7 . /;z '. .,!',.' II? I1F .' .. ~7 7'./" r-~-++--+~~~ p : ,P, r-' --. .~ .··'·,,4/7IAL )/'{?EA /7-1 b,O 1.:':-,>1 JAlI71AL-AfrPA)1-2 i ,I r-T--T~-+~~~ ~~~~~~7--~~ '., , r-~~~~~~~ . ,5; . "'''. r ,lamA!-,4KeA ~ / If,'g , : r , '~. ., ,.,,":., :' ' .... :~ " ,"'~;- ,. 11 ,' .. ' -/ s.l' .' !' ~.' I J , .. , ,,' ;,t( . ' ." ,: T I I ' ;~1 ~ ,." " . i /,yIT /A;L AA'd F-/,7, 7' ' ", J7 /t-y'~ It 7 'tl.? )t,7 1.("'>.1' go\l~ I t" "b; fl . !- ~ e ' . \ .,' . " . ,! '" ..... ' ,'.' _'" . ,,'I ,I 1 is .' ' '. " ~ , .. ' . . ·1 , ' '.' . ~ .' . .. 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"" y ""~)\ CALC' BY ?t !v~,.:rrN~AK T , " " -~ .. i'--, 3001 Red Hill, BUilding VI, SuitE; 212, Costa Mesa;<:A 92626 \ LINE 'STA to STA Q DIA So n Dc \Vc" ' Sc On, Vn Vf ' " " A /P+/~ -17tt/tJ, ,,,Z,,;? l 71" ,o,p; JPI7 fj/,u .. ---"'" ' -j,P? l'/ill r,fp' -,,. "./' : , , ' A I Jt PtJ~/1/'f/R 7,'9 " :J$ 'I d)16', h,PS ~lL i)PJ"f at.; ;;,72 #11-1 ' , , ~ , " , , ~ c. , t'," ' , 7 "' •• I ' , ' .. . ,p It!J~ --J,/J ',', J?;, /71/ '105 'ml-t., --1,// , I~'t.i /tjJ'J I , ' , , .. p' /-1/6, -/t-$~_. ' /5;7' /5,11 /f~6 , ,f", .. J.,' , ----, 't?1f" J }J~j IZ6l . .. , ' , ,. , , P /f~~ --~ .f7"$, , " 1££ 1£/1 ~1J6'7 ' Flli-l:-_ .. ' --a: 9> /5: J)'j /46J , .. , . , ' , , ' , , " ~ , A-:9: /f~# ~-/t/2 6,7 />'/' ,oJ'! ' ),tJJ. 6,Jl. ,o/f)} P'. ?l 1,77 7;liJ .. . .) ',' , ' ,., . A.-¥ /+12. ":'/1'10 ' Jj'.i: I~ /51 ( ,jz', l , a~6 ~&/) :~.~~r_~.' o,JZ Ig'lB :167 , " , , I A-~_, l+tfP.~ 2.~ ') ·If;f ) IJ ,4"6 "p/) (h$6' ,f;Pp' 1)17;1 1/12 il;b} '~67 7, " , , , , -' ' " ' " , - ,,":,.!.;~~~~"l;~"";"""M"" ' ' H ... ,; '"'.;.",._,s~~~...;u~~:~ ~..AA": __ "".,,.," .. ;,' ,;"., • .k.~~ ... ,"", ..... .,J;~("M~~-'~,_ ~-~~ :~~. SHT IOF'J .. . ,', DATE 1-7-3/' , Sf ,/)2tJ} letJ.>?' . ' .. , IP;7b t&f7-6 ,tJfli .PIPI " ()d'l? , , /' ., ,. .. ,t¥)¥f ,,' , , ' '. '. ' ' , . , , , 'j I i '. ;~ I " " , ,'. ,. I I ~ :.:. ~. . " , .-.. 1." '" ,~t.' , " ,,::r~( : " ~',~, ':;, .;.'" ,e ;:I~?r:.,- ".'J'" "l,' ;\. ;" "" :' ~:t: ,~,:~F ~, • ,·t!. ~,t""~" '" .... ~ ..... '1.~'~V..·....,;.{,.4t,.ti'; .. ";;,. PROJECT '" LINE STA. ELEV '. ELEV ,D IHV: H.G.I.:- A~5J V/"Ui, ~rr/ .... etA )2.,.qo 11I9!))~ i7? 1/9'?'71 4)/= Z,6f,- /Zt'/t/ Y1';'t'!. I'l-tjp' 911,1; " '. . I,;. ','A ' , ,t "-,;'~ . ' ... :,'; ~" .', .. ),' , . '.-:-. '. " :. -I-- " i.' , . 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