HomeMy WebLinkAboutPD 2020-0047; HARLE RESIDENCE; GRAVITY WALL DRAINAGE RECOMMENDATIONS; 2021-06-28A Universal
Engineering Construction Testing & Engineering, Inc.
Sciences Inspection I Testing I Geotechnical I Environmental & Construction Engineering I Civil Engineering I Surveying Company
June 28, 2021 CTE Project No. 10-15981G
KWD Holdings, LLC
Attention: Mr. John Darlington
265 Via Del Monte
Oceanside, California 92058
Telephone: (619) 733-8379 Email: darlingtonconsu1ting2yahoo.com
Subject: Gravity Wall Drainage Recommendations
Proposed Harle Residence
4547 Cove Drive
Carlsbad, California
References: Appendix A
Mr. Darlington:
As requested, Construction Testing & Engineering Inc., (CTE) has reviewed the proposed
gravity retaining wall and provides the following conceptual recommendations for wall drainage.
Retaining walls should have either a 6-inch gravel drainage section (separated by filter fabric)
OR appropriate drainage board that feeds water from behind the wall to a gravel and filter fabric
wrapped perforated pipe ("burrito drain") at the heel of the wall. Gravel drainage
sectionldrair.age board can be terminated 6 to 12 inches below the top of wall elevation.
A CTE representative should verify construction/installation of site retaining walls and
associated drainage systems. This document is subject to the same limitations as our previous
geotechnical documents.
The opportunity to be of service is appreciated. If you have any questions, please do not hesitate
to contact this office.
Respectfully submitted,
CONSTRUCTION TESTING & ENGINEERING, INC.
Dan T. Math, GE #2665 ( Principal Engineer or
RJJ/DTM:ach
Rodneyy
Senior Engineer
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Attachments: Appendix A—Reference
1441 Montiel Road, Suite 115 1 Escondido, CA 92026 1 Ph (760) 746-4955 1 Fax (760) 746-9806 1 www.cte-inc.net
REFERENCES
p. -
REFERENCES
Geotechnical Investigation, Proposed Harle Residence, 4547 Cove Drive, Carlsbad,
California, Construction Testing and Engineering, Inc., Project No. 10-15981G, Dated
February 26, 2021
Grading Plans For: Harle Residence, 4547 Cove Drive, Carlsbad, CA, Prepared by Civil
Landworks, Project No. PC202-0047, GR2020-003 3
Geotechnical Update Report, Proposed Residential Duplex Development, Existing Pad
(Lot 31) 4547 Cove Drive, Carlsbad, California, Prepared By SMS Geotechnical
Solutions, Project No. GI-16-06-128, Dated July 25, 2016