HomeMy WebLinkAboutCT 06-13; TABATA 10; COMPACTION FOR SIDEWALK; 2015-10-27c-rot, -i
ALPINE ENGINEERING I SOIL TESTING
P.O. Box 2155 I CIVIL ENGINEERING
Alpine, California 91903 I Surveying
I Subdivisions
Technical Assistance (619) 445-2024 AlpineEngineeringcox.net
California Civil Engineer RCE 27697
October 27, 2015
Daily Reports
Engineering Department
City of Carlsbad
1635 Faraday Ave.
Carlsbad, CA 92008
Re: Tabata Ranch
Compaction for Sidewalk
FIELD OBSERVATION AND TESTING
Observations and field density tests were performed by a
representative of Alpine Engineering, during the Water Main
/ - installation operations perform by Todd Van Dussen Construction
The density tests were taken according to A.S.T.M. Test D 1556
and the results of these tests are shown on the attached plates.
These services were performed on October 27, 2015.
The project is newly graded cul-de-sac that is to be improved with
the installation of underground utilities, curb, gutters,
driveways and street paving.
If you have any question concerning this letter, please feel
free to call me at your earliest convenience.
Sincerely,
Wallace M. Beron
Civil Engineer ! No. 27697
R.C.E. 27697 EXP.31311f6 j
Tabata Ranch Page A-i October 27, 2015
LABORATORY TEST RESULTS
The maximum dry densities and optimum moisture contents of
the fill materials as determined by the A.S.T.M. D 1557, which
uses 25 blows of a 10 pound hammer 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:
Soil Description Maximum Optimum
Dry Density Moisture
1. Light-Brownish, Silty 115.2 9.0
Fine Sand.
TABLE OF FIELD DENSITY TEST RESULTS
A.S.T.M. D-1557
Sidewalk Trench
Test
No.
Soil
Type
Road
Stationing
And
Off-set to
Center-Ln
Elevation
Of Fill at
test In
feet
Field Moisture
% dry Wt.
Maximum
Dry
Density
Lb.! cu.ft.
Dry
Density
Lb.! cu.ft.
Percent
Compaction
1 1 1+25 F.G. 8.6 115.2 106.3 92.3
2 1 1+65 F.G. 9.1 115.2 107.7 93.5
3 1 2+05 F.G. 9.0 115.2 105.6 91.7
4 1 2+45 F.G. 8.4 115.2 107.5 93.3
5 1 2+85 F.G. 9.5 115.2 108.1 93.7
6 1 3+15 F.G. 7.7 115.2 112.1 97.3