HomeMy WebLinkAboutMS 04-06; MAY DRIVEWAY AND PRIVATE JOINT ACCESS; PAVEMENT DESIGN RECOMMENDATIONS; 2023-03-29
GEOTECHNICAL | ENVIRONMENTAL | MATERIALS
March 29, 2023
Project No.: 3864-SD
Hope Love
hopeloverealty@gmail.com
Carlsbad, CA 92008
Subject: Pavement Design Recommendations
Proposed El Camino Real Residential Development
APNs 167-080-52-00 and 167-080-53-00
Carlsbad, California
Dear Ms. Love:
As requested, GeoTek, Inc. (GeoTek) has prepared this letter to provide portland cement
concrete (PCC) section recommendations for the site driveway associated with the project
development.
An assumed R-Value of 25 was used for design purposes. Upon the completion of grading a
representative sample of the subgrade should be collected for R-Value testing to verify the
pavement section.
Using the assumed R-value (R=25) and assumed Traffic Indices (TI) of 5.0, it is recommended that
the portland cement concrete pavement section designed be constructed with the following
pavement structural sections presented below:
Portland Cement Concrete Pavement
The pavement should consist of 6-inches of portland cement concrete over compacted subgrade.
The upper 12-inches of the pavement subgrade should be compacted to 95-percent relative
compaction with at least 100% of optimum moisture content (ASTM: D 1557). All subgrade
should exhibit firm and unyielding conditions prior to placement of the Portland cement concrete.
Portland cement concrete should have a minimum 28-day compressive strength of at least 3,200-
psi with contraction joints to control shrinkage spaced at no greater than 12.5-feet. Joints should
create square panels where possible. For rectangular panels (where necessary), the long
dimension should be no more than 1.5 times the short dimension. Joint depth should be at least
0.25 of the pavement thickness.
HOPE LOVE March 29, 2023
Pavement Design Project No.: 3864-SD
El Camino Real Residential Development, Carlsbad, California Page 2
Should you have any questions after reviewing this addendum, please feel to contact our office at
your convenience.
Respectfully submitted,
GeoTek, Inc.
Christopher D. Livesey
CEG 2733, 05/30/2023
Vice President
Edwin R. Cunningham
RCE 81687, Exp. 03/31/2024
Project Engineer
Distribution: (1) Addressee via email (PDF file)
REFERENCES
California Department of Transportation (Caltrans), 2017, “Highway Design Manual,” Chapters
600-670, Pavement Engineering.
American Concrete Institute International, 1998, “Concrete Site Paving”, dated January 1998.
CE & LST Corp., 2020, Grading and Improvement Plans for: May Driveway and Private Joint
Access Road, 4 Sheets, dated April 23, 2020.