HomeMy WebLinkAboutCT 73-49; CC and F PALOMAR AIPORT BUSINESS PARK PHASE 1; SUPPLEMENTAL COMPACTION TESTING; 1975-08-04Cabot Cabot & Forbes
August 4, 1975, 5114-1A, 5975
Page 2
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Our services consist of professional opinions and recommendations made in accordance wHb '
generally accepted soil and foundation engineering principles.and practices. This warranty
is in lieu of all other warranties either express or implted.
\
If you have any questions, please call.
Very truly yours",
Robert Prater
RP:rcs
Cop i es: Addressee (5)
Rick Engineering C?mpany
Attn: Mr. Hank Worley (1)
·...., . -~ .... ~--. ~ --~~ ---~.---. " ~,---. -~ ~--. -~~-,-
S 114-1A
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM 01556-70)
~pproximate Water Dry Degree of
Elevation Content, Density 'Compaction Compaction
Test No. Date of Test Test Location (Feet) (%) ~cf) (%) Curve No. Remarks
842 11/5/74 Sewer main, Camino Vida Roble FSG-4.5 18.7 104.0 90 13
Sta. 21+00
843 II Storm main, Yarrow Drive FSG-2.5 23.7 ,101.3 87 13
Sta. 3+20
844 II Storm main, Yarrow Dr-ive FSG:"3.0 25.1 101. 1 87 13
Sta. 10+70 'e 845 II Sewer main', Corte De La Pina' FSG-6.0' 26.3 102.3 88 13 .
Sta. 4+30
846 ,II Sewer main, Corte De La Pina FSG-3;0 ' 20.0 102.2 88 ' 13
Sta. 4+30
847 '-II Sewe'r main, Camino Vida Roble FSG-5.0 24.0 '104.1' 90 13
17+80,
:
11/15/74 848 , Sewer main, Camino Vida Roble FSG-5.0 17.4 96.7 83 13
Sta. 5+70
849 II Sewer main, Camino Vida Roble FSG-5.5 26.8 95.7 84 14
Sta. 8+10
850 II S~wer main, Camino Vida Roble FSG-5.0 28.2 96.0 85 14
Sta. 10+60 -851 II Storm main, Camino Vida Roble FSG-4.0 23.9 103.-'1 -91 14
Sta. 12+00
852 II Sewer main, Camino Vida Roble FSG-7.0 2~.5 96.1 85, ' 14
Sta. 12+60
853 II Storm main, Camino Vida Roble FSG-4.0 27.2 99.8 88 14
Sta. 14+80
Notes: 1) "Compaction Curve No. II refers to Table B .•
2) "FSGII denotes finished subgrade elevation. 'IIFGII denotes top of base course elevation.
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S 114-1A
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM D1556-70)
~pproximate Water Dry Degree of
Elevation Content Density Compaction Compaction
Test No. Date of Test Test Location (Feet) (%) Jecf) (%) Curve No. Remarks
854 11/15/74 Sewer main, Camino Vida Roble FSG-8.0 17.5 91.1 80 14
Sta. 15+90
855 11/18/74 Sewer main, Camino Vida Roble FSG-5.0 18.7 92.6 82 14
Sta. 15+90
856 II Sewer main, Camino Vida Roble FSG-7.0 . 21.·2 86.1 81 12
Sta. 18+00 .. -
857 II Sewer main, Yarrow Drive. FSG-7 .0' . 22. 1 98. 1 86 14.
Sta.7+70
858 II Sewer main, Yarrow 'Drive FSG-4.·5 19.0 109;7 94 13
Sta. 7+70
859 II Sewer main, Yarrow Drive FSG-6.5 21'-5 .97.6 . 86 14
Sta. 8+80
.-14 860 II Sewer main, Yarrow Drive FSG-4.5 22.8 101. 1 89
Sta. 8+80
861 II Sewer main, Yarrow Drive FSG,,:,4.0 32.2 89.6 84 12
Sta. 11+70
862 II Sewer main, Yarrow Drive FSG-4.0 28.7 91.3 85 12
Sta. 12+90 -863 II Sewer main, Yarrow Drive FSG-4.0 31.6 88A .83 12
Sta. 15+90 .
864 II Sewer ma in, Yarrow Dri ve FSG-5.0 22.7 98.3 87 14
Sta .• 18+90
865 11/20/74 Sewer main, Camino Vida Roble FS·G-9.0 29.5 87.5 77 14
Sta. 10+60
Notes: 1) "Compaction Curve No.1I refers to Table B.
2) IIFSG II denotes finished subgrade elevation. "FG" denotes top of base course elevation.
(8
S 114-1A
iABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM D 1556-70)
Approximate Water Dry Degree of
Elevation Content Density Compaction Compaction
TE;stNo. Date. of Test T est location (Feet) (%) Jed) (%) Curve No. Remarks
866 4/1/75 SDG&E & PT&T box, Yarrow Dr. FSG-5.5 22.9 90.3. 80 14
Sta. 24+00 .
867-II SDG&E & PT&T main,Yarrow Dr. FSG-1.5 20.9 107.5 93 13
Sta. 21+00
868 II SDG&E & PT&T box, Yarrow Dr. FSG-3.0 24.1 89.5 84 12
Sta. 18+20 'e 869 II SDG&E & PT&T maIn/Yarrow Dr. FSG-1.0 26.3 91.0 85 12
Sta. 15+70 .y
870 II SDG&E & PT&T box, Yarrow Dri. FSG-6:0 39.5 85.4 75 14
Sta. 12+90·
871 " SDG&E & PT&T main,Yarrow Dr. FSG-1.5 21.9 102.4 ·90 14
Sta. 11+20
872 4/2/75 SDG&E & PT& T box, Yar.row Dr. FSG-5.5 24.6 99.8 86 13 See #894
Sta. 8+50
873 II SDG&E & PT&T main,Yarrow Dr. FSG-1.5 18.7 102.5 90 14
Sta. 6+30
874 II SDG&E & PT&T box, Yarrow Dr. FSG-6.5 20.3 105.0 93 14
Sta. 0+50 e
875 4/3/75 Storm main, Yarrow Drive FSG-1.5 22.0 107.0 94 14
Sta. 1+80
876 " SDG&E & PT& T lateral r .. FSG-l.5 22. 1 95;4 84 14.
Yarrow Drive, Sta. 4+30
877 II Sewer main, Yarrow Drive 17SG-2.0 15.5 110.0 95 13 .
Sta. 5+30
Notes: 1) IICompaction Curve No." refers toTable B.
2) IIFSG" denotes finished subgrade elevation. "FG II denotes top of base course elevation.
\S).
S114-1A
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM D1556-70)
Approximate Water Dry Degree of
Elevation Content Density Compaction Compaction
Test No. Dote of Test T est Location (Feet) (%) , (pcf) (%) Curve No. Remarks
878 4/3/75 Water main, Yarrow Drive FSG-l.5 17.5 110.0 95 13
Sta. 7+40
879 II Water main, Yarrow Drive FSG-2 .• 0 , 22.3 103.6 .. 89 13 /
Sta. 12+80
880 II Sewer main, Yarrow Drive FSG-lo5 ,', 25.2 101.0 89 14
Sta'. 10+40
See #895 "-881 4/4/75 SDG&E & PT & T lateral, FSG-(5 22.8 83.6 78 12
Yarrow Drive"Sta. 14+10
882 II Sewer main, Yarrow Drive FSG-2.0 22.8 99.0 93 12 I
Sta. 17+20
883 II Water main, I Yarrow Drive FSG-1.5 12.0 110.1 95 13
, ' Sta. 19+10
'884: 4/15/75 Water lateral, Yarrow Drive FSG-2.0 20.2 106.0 93 14
Sta. 10+10
885 II Water lateral , Yarrow Drive FSG-1.5 21.8 101.5 89 14
Sta. 3+50
886 II Sewer main, Corte De La Pina FSG-4.5 24.3 93.5 82 14
, Sta. 6+70 e'
887 II Storm' lateral , Corte De La Pina FSG-1.5 19.8 98.2 87 14
Sta. 5+80·'
888 II Water main, Corte De La Pina FSG-L5 20.9 109.2 96 14
Sta. 6+70
889 II, Sewer main, Corte De La Pina FSG-l.O 19.4 100. 1 88 14
Sta. 6+70
No,tes: 1) IICompaction Curve No.1I refers to Table B.
2) IIPSGII denotes finished subgrade elevation. IIFG II denotes top of base' course elevation ~
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S 114-1A
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM D 1556-70)
Approximate Water Dry Degree of
Eleva.tion Content Density Compaction Compaction
Test No. Date of Test Test Location (Fee t) (%) Jecf) (%) Curve No. Remarks
890 4/15/75 Storm lateral, Camino Vida Roble FSG-1.5 21.5 105.5 93 14
Sta. 21+20
891 II Water main, Camino Vi da Roble FSG-1.5 22.7 100.2 88 14
Sta. 22+20
892 II Sewer main, Camino Vida Roble FSG-'1.5 21.6 104.1 92 14
Sta.23+20 e 893 II Sewer main, Corte De La Pina FSG-1.5 22.7 96.8 91 -12
Sta.2+90
894 4/25/75 SDG&E & PT& T box, Yarrow Dr. FSG-3.0 5.6 105.0 95 16 Retest of #872
Sta. 8+60
895 II SDG&E & P.T& T lateral, FSG-1.5 17.4-98. 1-92 12 Retest of #881 , -
Yarrow Drive, Sta. 14j-10
896: II SDG&E & PT&T box, Yarrow Dr .. FSG-4.0 7.6 98.1 88 16
Sta. 18+30
897 5/6/75 PavemeAt subgrade, Yarrow Dr. FSG' . 11.2 110.5 95 13
Sta. 23+60
898 II Pavement subgrade, Yarrow Dr. FSG 15.2 114.0 98 13
Sta. 21+50 0_
899 II Pavement subgrade, Yarrow Dr. FSG 14. 1 117.8 100 13
Sta. 19+50
900 II Paveme':lt subgrade, Yarrow Dr. FSG 14.6 115.8 100 13
Sta. 17+50 ,
901 II Pavement subgrade, Yarrow Dr. FSG -15.5 107.8 93 _ 13
Sta. 15+50
Notes: 1) IICompaction Curve No. II -refers to Table B.
2) "FSG II denotes finished subgrade elevation. "FG II denotes top of base 'course elevation .•
(3)
S 114-1A
TABLE A -SUMMARY. OF FIELD DENSITY TEST RESULTS (ASTM D 1556-70)
Approximate Water Dry Degree of
Elevation Content Densi-ty Compaction Compaction .
Test No. Date of Test Test Location (Feet) (%) (pcf) . (%) Curve No. Remarks
902 5/6/75 . Pavement subgrade, Yarrow 'Dr. FSG 13.3 121.2 100' 13
Sta. 13+50
903 II Pavement subgrade, Yarrow Dr. FSG 13. 1 110.4 95 13
Sta. 11+50
904 II Pavement subgrade, Yarrow Dr. FSG 11.4 108.8 94 13
Sta. 9+50 .-905. II ' Pavement subgrade., Yarrow Dr. FSG 15.5 112. 1 96 13
Sta. 7+50
906 II Pavement subgrade; Yarrow Dr. FSG 12.0 104.8 90 13
Sta. 5+50 .
907 .... Pavement subgrade, Yarrow Dr. _ ,FSG, 12.2 110. 1 95 13
Sta. 3+50
908: " Pavement subgrade, Yarrow Dr. FSG 10.9 109.3 94 ·13 I
Sta" 1+50
909 5/1/75 Pavement subgrade, ,FSG 13.5 109.9 95 13
Corte De La Pina, Sta. 2+00
910 " Pavement subgrade, FSG 13.7 106.0 91 13
Corte De La Pina, Sta. 4+00 .' e
911 II Pav.ement subgrade, FSG 16.3 115.4 99 13
Corte De La Pina, Sta .. 6+00
912 " Pavement subgrade, FSG 15.4 111.8 9,6 13
, Corte De La Pina, Sta. 8+00
913 " Sewer main, Corte De La Pina FSG-3.0 25.5 98.6 87 14
Sta. 6+75
Notes: 1) "Compaction Curve No." refers to Tobie B.
2) '.'FSG" denotes finished subgrade elevation. IIPG" denotes top of bose course elevation.
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S 114-1A
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM D1556-70)
Approximate Water Dry Degree of
Elevation COr:ltent Density Cptnpaction Compaction
Test No. Date of Test T est. Location (Feet) (%) JEcf) (%) Curve No. Remarks
914 5/7/15 Sewer main, Corte De La Pina FSG-2.0' 23.3 103.9 92 14
Sta. 6+75
915 5/14/75 Pavement base course, FG 5.4 127.7 97 15
Yarrow Drive, Sta. 23+00
916 II Pavement base course, FG '~'9~2 127.8 97 15
Yarrow Drive, Sta. 19+00 e 917 II Pavement base course, EG 4.0 1'31.7 100 15
Yarrow Driv~, Sta. 15+00
918 II Pavement base course, FG 4.9 124.6 95 15
Yarrow Drive, Sta.' 11+00
919 'II Pavement base course, FG 4.2 131. 1 100 15
Yarrow Drive, Sta. 7+00
920: II Pavement base course, 'FG 5.6 128.6 98 15
Yarrow Drive,' Sta. 3+00
921 II Pavement base course,. FG 7. 1 128.9 98 15
Corte De' La Pi na, S ta. 6+00
922 II Pavement base cou.rse i FG' 7.5 136.0 ' 100 15
Corte De La Pina, Sta. 2+00 -923 II PT&T main, EI Camino Real, FSG 20.9 90.9 78" 13
Sta. 280+45
924, II PT&T main, EI Camin~, Real, FSG 11.5 93-.7-81 13
Sta.274+50
925', II PT&T main, EI Camino Real, FSG 16.7 97.8 84 13
Sta. 270+50
Notes: 1) "Comp~ction Curve No. II refers to Table B.
2) "FSG II denotes finished subgrade elevation. IIFG II denotes top of base course elevatiory.
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S 114-lA
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM 01556-70)
Approxi mate Water Dry Degree of
EI~vation Content Density ,Compaction Compaction
Test No. Date of Test ,Test Location (Feet) (%) Jed) (%) Curve No. Remarks
926 5/15/15 Water main, Camino Vida Roble FSG-1.5 6.5 132.9, 100 15
Sta. 22+50
927 5/27/15 Erosion gully, C~mino Vida FSG-l.0 10.4 95.2 82 4 See #931
Roble, Sta. 8+00
928' II Erosion gully, Camino Vida FSG-1.5 14.6 97.7 84 4 See #932
Roble, Sta. 9+50 e 929 II Erosion gully, Camino Vida FSG-1.5 24.2 99.9 89 '6 See #930
Roble, Sta. 13+00 ,..
930 II Erosion gully, Camino Vida FSG-2.0 21.4 105.6 96 10 Retest of #929
Roble, Sta. 14+00
931 II Erosion gully , Camino Vida FSG-2.0 16 •. 3 107.9 ' 93 4 Retest of #927
Roble, Sta. 10+00
932 II Erosion gully, Camino Vida FSG:..0.5 18.2 100.6 90 6 Retest of #928
Roble, Sta. 12+20
935 6/5/15 Pavement subgrade, F'SG 12. 1 108.5 93 13
\. Camil)o Vi da Roble,_,Sta. 1+75
936 II Pavement subgrade; FSG 10.8 ' no.o 95 13
. Cami no Vi da Roble, Sta •. 5+50 ,e"
, 937 II Pavement subgrcide'~ FSG 12.4 108.0 93 13
C~min,o Vida Roble,,_Sta.9+50 ,
938 II Pavement subgrade, FSG 13.6 111.2 96 ' 13
Camino Vida Roble, Sta. 13+50
939 II Pavement subgrade, FSG 11.2· 115.7 100 13
Camino Vida Roble, Sta. 17+50
Notes: l)"Compaction Curve No. II refers to Table B.
2) "FSG" denotes finished subgrade elevation. "FG" denotes top of base course elevation.
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--o O-
S 114-1A
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM D1556-70)
Approximate Water Dry Degfee of
Elevation Content Density . Compaction Compaction
Test No. Date of Test . Test Location (Feet) (%) JEd) (%) Curve No • Remarks
945 6/5/75 Water main, Camino Vida Roble FSG-1.5 19.3 102.4 90 14
Sta.4+55
946 II SDG&E main, Camino Vida FSG-1.5 15.0-98.4 88-6
Roble, Sta. 3+75
947· II Sewer main, Camino Vida FSG-1.5 20.0 101. 1 92 10
Roble, Sta. 15+80 e 948 II SDG&E main, Camino Vida. FSG-l.O 19.8 98.9 88 ·6
Roble, Sta. 13+60
949 . II Water main, Camino Vida FSG-1.q 18.9 100.8 90 6
Roble, Sta. 12+70
950 -JI Sewer main, -Camino Vida Roble FSG-1.5 18.0 107. 1 93
Sta. 7+00 .
951: 6/6/75 SDG&E,' EI Camino Real FSG-l.O 16-.7 1'05.4 91 4
Sta. 282+50
952 II SDG&E, EI Camino Real FSG-l.O 17.9 98.5 88 6 . See #966
S ta. 279+00 ,
953 II SDG&E",EI Camino Real FSG-1.0 21.0 99. 1 88 6 See #971
Sta. 276+00 . .e,
,954 II Pavement base course FG 4.5 127.6 97 15
Camino Vida Roble, Sta. 2+25
955 . II Pavement base ,course FG 7.5 1~9.4 9!3 . 15
Camino Vida Roble, Sta. 7+00
956 . II Pavement base course FG 5.6 131.7 100 . 15
Camino Vida Roble, Sta. 12+00
Notes: 1) "Compaction Curve No."-refers to Tobie B.
2) II,FSG" genotes finished subgrade elevation. iIFG" denotes top of base course e,levation.
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S 114-1A
TABLE A -SUMMARYOF FIELD DENSITY TEST RESULTS (ASTM D1556-70)
Approximate Water Dry Degree of
Elevation Content Density Compaction Compaction
Test No. ' Date of Test T est Location (Feet) (%) Jed). (%) Curve No. Remarks
957 6/6/75 Pavement base course FG 5.9 128.7, ' 98 15
',Camino Vida Roble, Sta. 17+00
958 II Pavement base course FG 6.8 133.6 100 15
Camino Vida Roble, Sta. 22-,1-00
959 II Pavement base course FG 6.9 126.1 96 15
Camino Vida Roble, Sta'. 23+50 e.
963 6/30/75 SDG&E-Main FSG-2.0 22.8 93.4 83 6 See #969
El Camino Real Sta. 295+00 ,. -._-
964 II SDG&E Main FSG-l.5 16.0 102.4 89 . See #972
El Camino Real Sta. 288+50 ----.. ------
,965 II SDG&E Main FSG-1.5 16.9 105,.6 92 Retest of ~952
El Camino Real, Sta. 281+00
.. See #971 . 966 ,II SDG&E Main FSG-l:5 ' 16.5 100.5 87
EI Camino Real, Sta. 275+00
,
, ... ~ . --~ ~ .
967 II SDG&E Main FSG-2.0 16.9 94.5 82 ' See #970"
El Ca,mino Real ~ta. 270+50 '-. . ~., .. --~ -~----
968 7/2/75, SDG&E Main FSG-1.5' 16.8 103.5. 92 6 ~etest of #9"
EI Cqmino Real Sta. 295+50
969 II SDG&E Main :, FSG-1.5 17.2 107.5 ' 93 13 Retest of #968
EI Camino Real Sta. 270+75
970 II SDG&E Main PSG-l.O 15.8 112.9 97 13 Retest'of # 's~g53
El Camino Real Sta. 276+50 & 967
971 II SDG&E Main FSG-l.O 13.4 108.1 93 13 Retest of #965
EI Camino Real Sta. 288+80
Notes: 1) IICompaction Curve No. II refers to Table B.
2) "FSG II denotes finished subgrade elevation. "FG II denote~ top of base course elevation.
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S 114-1A
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM 01556-70)
Approximate' Water Dry Degree of
Elevation Content Density Compaction Compaction
Test No. Date of Test Test Location (Feet) (%) Jed) (%) Curve No. Remarks -
972 7/9/75 Pavement subgrade FSG 15. 1 108.0 93 13
EI Camino Real Sta. 292+50
973 II Pavement subgrade FSG 14.5 108.3 93 13
EI Camino Real Sta. 288+50
974 II . Pavement subgrade FSG 9.9 110.9 95 13
EI Camino Real Sta. 283+00
975 II Pavement subgra'de FSG 10.0 113'.2 97 13 e
'EI Camino; Real Sta. 278+00
976 " Pavement subgrade FSG 12.7 . 106.9 92' 13
EI Camino Real Sta. 273+00
977 7./7/75, Pavement base course FG 8.5 136. 1 100 15
EI Camino Real Sta. 271+50
978 " Pavement base course FG 11.4 131.6 100 15
EI Camino Real Sta. 276+50
979 II Pavement base course FG 7. 1 137.2 100 15
EI Camino Real Sta. 281+50'
980 II Pavement base course FG 7.t 13Q.7 99 15
EI Camino Real Sta. 286+50 -981 !I Pavement base course FG 8.8 129.8 98 '15
EI Camino Real Sta. 291+50
9,82 II Pavement bas~ course FG 6.2 128.8 .98 15
EI Camino Real Sta. 296+50
Notes: 1) IICompaction Curve No.1I refers to Table B.
2) "FSG II denotes finished subgrade elevation. IIFG II denotes top of base course elevation.
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'e '. S 114-1A
TABLE 8
LABORATORY COMPACTION TEST RESULTS (ASTM D15~7-70 & ASTM 0698-70)
Maximum OptImum
Compaction Test Description of Source of Dry Density Water Content
(Curve) No. Material' Material (pef) (%)
1 Brown, fine ' On-site 115.0 10.5 '.
SILTY SAND
2 Light brown. On-site ' 113.0 14.0
,SANDY CLAY
3 B~own, fine' On.,-site 121.0 10.0
CLAYEY SAND
4 Light bro:wn; On-site 116.0 11.5
fine SILTY SAND
5· Light brown, On-site 115.0 .14.0
fine SILTY SAND
6 Light br~wn, On":'site 112.0 15.8
fine SAN DY SILT , 17.5 7 Brown SILTY CLAY On-site 109.0
8 Gray-brown On-site " 117.0 13.0
CLAYEY SILT
9 Li'ght brown On-site 114.0 14.5
CLAYEY SILT
10 Gray SIL:rv CLAY On-site 110.0 18.2
1'1 ... Grpy-brown fine . On-site 120.0· 13.3
to coarse CLAYEY
SAND
12 Gray-brown On-site 106.8 18.9
SILlY CLAY
13 Light brown fine On-site. 116.2 11.6
SILTY SAND
. 14 Gray-brown On-site 113.5 13.0
SILTY CLAY
15 Brown decomposed' Import 131 ~5 8.0
GRANITE 0Ni I ey Bros'.)
.16 Gray fine SAND Import 111.0 '12.5
Lawnev-Haldueer AssaEiates
Foundation I Soil! Geological Engineers
11558 SORRENTO VALLEY ROAD, SAN DIEGO, CALIFORNIA 92121
Cabot Cabot & Forbes
8136 Miramar Road
San Diego, California 92121
. 8tt!?ntjol1:_ Mr .• l.auJ t/<;lInmo.ns_
July 1., 1975
Sl14-1F, S947
JOHN V. LOWNEY, C. E ..
PErER KALDVEER. C: E.
ROBERT R. PRATER, C.E.
DONALD H. HILLEBRAN·DT, C.E •
. 714/453-9605
RE: EARTHWORK OBSERVA nON
Dear Mr. Hammons:
. .
AN D TESTIN G SERVICES
16-INCH HIGH PRESSURE WATER~MAIN
PALOMAR AIRPORT ROAD
CARLSBAD, CALIFORNIA
This letter summarizes our earthwork observation and testing services i.n connection with ..
grading for a section of 16-inch .high pressure water main loc~ted outside the. CC&F Palomar
Airport Business Park 'Subdivision bot,lndary on Palomar Airport Road in Carrsbad, ·Califomi·a.
The section of 01 ignment under consideration is located between Stations 197+40 and200+eO.
In order to provide a uniform thickness of cover· for the pipe it was necessary to .bring this·
section of alignment to grade by placing up to 4 feet of compacted fill. In addition, because
of the presence of soft, saturated subgrade soils encountered in the fiJ I area between Stations·
200+00 and 200+80 it was found necessary to overexcavate these materials dciwn to firm natural
soils (approximately 2 to 3 feet deep) prior to placing fill. The width of fill placed in thi.s
section of the alignment was between 10 and 15 feet.
Earthwork operations were performed during the period of May 6 through 13,. 1975. During
this· period We w·ere present at the site on a part-time basis to observe the operations and to
perform field density tests as required. The results of the density tests and a labo·ratory
compactio.n curve are presented in the attached Tables A and B.
Based on the results of our observations and fi,eld density tests r if is our opinion that the earth-
work was performed in accordance with our recommendations. '·f you have any questions
please call.
Very truly yoursr
LOWNEY /KALDVEER ASSOCIATES
Robert Prafer
RP:rcs
Copies: Addressee (3) PALO ALTO / OAKLAND / MONTEREY / SAN DIEGO
Rick Engineering Company I Attention: Mr. Hank Worley (2)
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TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM D1556-70)
---------------------~-. ------. --. __ ._-.---
Water Dry Degree of
Test Location Elevation " Con.tent D~nsity Compaction Compaction
Test No. Date of Test (Po lomar Ai rport Road) (Feet) (%) (pef) (%) Curve No.
=----~-----.~. 0_......-" . -.... ... ~ ..... ... -------... _ ..
l. 5/7/75 Sta. 197+75 270.5 8.3 105.0 91 1
2 II Sta. 198+70 271.5 15.0 111.0 96 1
3 5/8/75 Sta. 199+45 273.5 11.5 104.8 90
4 II Sta. 198+00 271.5 . 15.3 107.3 93
5 5/13/75 Sta. 1.99+90 273.6 17. 1 104.3 90
6 II Sta. 200+43 274.6 14.3 103.9 90
7 II Sta. 200+80 276.0 18.9 106. 1 91
8 II Sta. 199+85 276.6 15.2 104.3 90
Notes: 1) IICompaction Curve No. II refers to Table B.
2) 90 percent degree of corppaction required on all tests.
TABLE B
LABORATORY COMPACTION TEST RESULTS (ASTM 01557-70)
Compaction .Test
(Curve) No.
Description of
Material
Maximum
Sourc~ of . Dry Density
Optimum
Water Content
Light brown
fine SILTY
SAND
Materia'l . (pef)
On-site 116.0
Note: Curve No.1 was performed for the mass grading operations at the
CC&F Pa.lomar: Airport Business Park -Phase I.
(%)
11.5
S 114-1F
,
'"
e
e
~.
•
Lawney-Raldueer ASSaEiales
Foundation I Soil I Geological Engineers
, '----11558 SORRENTO VALLEY ~~t~'f:~~~O' CALIFORNIA 92121
S 114-1F '/! 5948
Cabot Cabot & Forbes
8136 Miramar Road
, San Diego, California 92121
Attention: Mr. Paul Hammons
JOHN V. LOWNEY, C,E.
PETER KALDVEER, C. E.
,ROBERT R. PRATEE\, C. E.
DONALD H. IiILLEBRANDT, C. E.
714/453-$605
RE: HELD DENSITY TESTING SERVICES
16-INCH HIGH PRESSURE WATER MAIN,
TRENCH BACKFILL
PALOMAR AIRPORT ROAD
CARLSBAD, CALIFORNIA
Dear Mr. Hammons:
This letter summarizes our field density testing services in connection with the trench
backfill over the recently constructed 16-inch high pressure water main on Palomar
Airport Road in Carlsbad, Californ'ia. The results of the density test.s and laboratoo/
compaction curves are presented in the attached Tables A and B.
It should be noted that our services for the work covered by this letter only included in-
place density testing of the trench backfill soils. This letter is not and should not be
construed as being an approval on our part 'of the degree of compaction attained in t.he
trench backfi" materials.
If you have any guestions, please call.
Very truly yours,
LOWNEY/KALDVEER ASSOCIATES'
Robert Prater
RP:rcs
Copies: Addressee {3}
Rick Engineering Company
Attn: Mr. Hank Worle,y (2)
PALO ALTO I OAKLAND I MONTEREY I SAN DIEGO
"
S114-1F
TABLE A -SUMMARY OF FIELD DENSI1Y TEST RESULTS (ASTM 01556-70) ,. ..
Water Dry Degree of
T est Location Elevation Content D~nsity Compaction Compaction u
Test No. Date of Test (Palomar Airport Road) (Feet) (%) (Pcf) (%) CurVe No. Remarks
9 5/14/75 Sta. 166+00 FSG-.5 26.5 94.7 84 2
10 11 Sta. 169+00 FSG-.5 16.7 103. 1 89.
11 5/20/75 Sta. 178+00 FSG-.5 16.2 94.8 82
12 11 Sta. 175+00 FSG-1.0 21.0 98.6 85
13 5/24/75 Sta. 177+25 FSG-1.Q 20. 1 105.6 . 91 .1 Retest of #"._
14 II Sta. 173+50 FSG-1..0 28.4 95.3 82 f 1 Retest of #12
15 II Sta. 169+50 F.SG-1 .• 0 21.5 100.0 86 1 Retest of # 10
16 6/4/75 Sta. 170+25 FSG-l.0 18.7 101.3 87 1 Retest of #'510& 15
17 II Sta. 166+75. FSG-1.0 25.6 96.9 84 1 Retest of #9
"8 6/5/75 Sta. 173+40 FSG-1.0· 27.2 96.0 86 . 2 Retest of #'s12&141
19 II Sta. 179+20 FSG-1.5 22.4 102. 1 88 1
20 6/17/75 Sta. 189+70 FSG-1.5 25. 1 88.5 81 3
21 II Sta. 196+10 FSG-:-1.0 27.9 100.6 90 2
, •• t
22 II Sta. 199+60 FSG-1.0 20.5 102'.5 92 2 ·e
Notes: 1) IICompaction.Curve No.1I refers to Table B.
2) The results of Test Nos. 1 through 9 were included with our letter of July 1, 1975
.~
\
. , .. S114-1F
. TABLE B
LABORATORY COMPACTION TEST RESULTS (ASTM D 1557-70)'
~ Maximum Optimum
Compaction Test Description of Source of Dry Density Water Content'
(Curve) No. Material Material (pef) (%)
1 Light brown On-site' 116.0 11.5
fine SilTY.
SAND
·2 Light brown On-site 112.0 . 15.8
.fine SANDY
SILT
3 Brown SILTY On-site 109.0 17.5
CLAY
Note: Curve Nos. 1 thr~ugh 3 were performed for the mass grading operations at the
CC&F Palomar Airport Business Park -Phase I~
•
'. lawney-Haldueer AssaEiales JOHN V. LOWNEY, C.E.
PETER KAlDVEER, C. E.
ROBERT R.PRATER, C.E.
DONALD H, HILLEBRANDT, C. E.
Foundation I Soil I Geological Engineers
1-_,_~ ____ _ 11558 SORRENTO VALLEY ROAD, SAN DIEGO, CALIFORNIA 92121 714 ! 4fj3-5605
Cabot Cabot & Forbes
8136 Miramar Road
San Diego, California 92121
Attention: Mr. Paul Hammons
Gentlemen:
August 5, 1975
S 114-1A, 5976
RE: EARTHWORK OBSERVATION
AND TESTING SERVICES
SUBGRADE PREPARATION AND -BASE COURSE
COMPACTION FOR THE WIDEN-ING OF -.
PALOMAR AIRPORT ROAD
CC&F PALOMAR AIRPORT BU51NESSPARK
CARLSBAD, CALIFORNIA
Thi s letter summarizes our earthwork observation and testing services in connection wah
the subgrade preparation work and compaction of the base course layer for the wi deni.ng
of Palomar Airport Road adjacent to the CC&F Palomar Airport Business Park in Carlsbad,
California. Our earthwork observation and testing serviceswithinthe business park were
summairzed in two previous letters dated October 11, 1974 and August 4, 1975. _
Our services covered by this letter were performed on June 4 and 5, 1975. During this
period we were present at the site on a part-time basis to make observations and to perform'
field density tests as required. The results of the field density tests and Idboratory
compaction tests are presented in th.e attached Tables A and B.
Our services consist of professional opinions and recommendations mQde in accordance with
generally accepted soil and foundation engineering principles and practices. This warranty
is in lieu of all other warranties either express or implied. .
If you have any questions, please call.
Very truly yours,
LOWNEY!KALDVEER ASSOCIATES
Robert Prater
RP:rcs
Copies: Addressee (5)
Rick Engineering eb9r$'219!y~AA'-fflP/ ~~:EMCih~Amrfgy _ (1)
--~. -"" --
S 114-1A
TABLE A -SUMMARY OF FIELD DENSITY TEST RESULTS (ASTM D 1556-70) r
Approximate Water Dry Degree of
Elevation Content Density Compaction Compaction \..-r
Test No. Date of Test Test Location (Feet) (%) (pcf) (%) Curve No. . Remarks .
933 . 6/4/75 Palomar Airport Rd. 166-1--00 FSG 16.5 101.3 87' 13 Test failed,
See #941
934 II II 169+00 FSG 12.6 107.6 93 13 Test fai led, .
See #940
940 6/5/75 II 168+75 FSG 1.1 .8 109.7 94 13 Retest of #934
. Approved afe'
additional
reroll ing
941 II II 166+25 . FSG ' 15.0' 106.5 94',' 2 'Retest of #933
Approved after
additional'
rerolling
942 .. II II 172+50 FSG 9.9 113.3 98 13
943 II II 176+50 FSG 13. 1 111.5 96 13
944 II II 180+00 FSG 15·.2 110.5 95 13
960 II II 177+50 FG . 6.7 127.8 97 15
961 II II 172+00 FG 6.5 132.7 100 15 . i.
962 II II 168+50 FG 6.3 127.5 97 15·
Notes: 1) "Compaction Curve No. II refers to Table B.
2) 95 percent degree of compaction required on all fests".
3) IIFSGII de~otes finished subgrade elevation. IIFG II denotes top 'of base' course elevatio~ •. ®
• • , ,
" S 114-1A
TABLE B
LABORATORY COMPACTION TEST RESULTS (ASTM D1557-70&ASTM D698:-70f_
~ Maximum' Optimum
Compaction Test Description of Source of Dry Density Water Content
(Curve) No. Material Material (pcf) (%)
1 Brown, fine On-site 115.0 10.5
SILTY SAND
2 Light brown. _ On-site ' . 113.0 14.0
SANDY CLAY
3 Brown, fine On-site 121.0 10.0
CLAYEY SAND
4 Light brown; On-site 116.0 11.5
fine SILTY SAN D
5 Ligh't brown, On-site. 115.0 14.0
fine SILTY SAND
6 Ligh~ brown, . On-site 112.0 15.8
fine SANDY SILT
7 Brown SILTY CLAY On-site 109.0 17.5
8 Gray-brown On-site 117.0 13.:0
CLAYEY SILT
9 Light brown On-site 114.0 14.,5
. CLAYEY SILT
10 Gray SILTY CLAY On-site 110.0 18.2
11 G ray -brown fi ne On-site 120. o· 13.3
to coarse CLAYEY
SAND
12 Gray-brown On-site 106.8 18.9
SILTY CLAY
13 Light brown. fine On-site 116.2 11.6
SILTY SAND
14 Gray-brown On-site 113.5 13.0
SILTY CLAY
15 Brown decomposed Import 131.5 8.0
GRANITE (Wiley Bros.)
16 Gray fine SAND Import 111.0 ·12.5