HomeMy WebLinkAboutCDP 15-42; CORBIN HOUSE; PLAN REVIEW RESPONSE LETTER; 2014-02-10. I ENGINEERING
DESIGN GROUP
GFo1F-IIIr.AI 1I StRCrLA1 &CHlitC1i?A1COISLJOTS
fO DNTLAL COMRCAJ. CCNSIRUCflON
2121 Montiel Road, San Marcos, California 92069 (760) 839-7302• Fax: (760) 480-7477 www.designgroupca.com
Date: February 10, 2014
To: Lucy Ann Hall Trust
P0 Box 4230
Carlsbad, CA 92018
Re: Proposed Subdivision located at 4400 Park Drive, Carlsbad, California
Subject: Plan Review Response Letter
References: 1) "Updated G eotechnical Investigation & Foundation Recommendations, Proposed
Subdivision located at 4400 Park Drive, Carlsbad, California." Prepared by Engineering
Design Group, dated October 30, 2014.
2) Emailed pictures of redline comments from the City of Carlsbad on civil drawings.
We have prepared this letter as our response to redline comments submitted to us via email of comments made on
the civil sheets. Our responses are as follows:
1. Page 4 of the soils report provides a maximum bearing pressure of 2,000 psf.
The SDRSD C-7 design data provides for an equivalent fluid pressure of 36 pcf/If for walls with level backfill.
The design data for walls with a 1.5:1 backfill slope an angle, denotes the walls are designed utilizing an
internal friction of 33 degrees. An angle of internal friction of 33 degrees and soil density of 120 pcf has a
resulting equivalent fluid pressure of 78 pcf, which exceeds than the 65 pcf provided for in our report.
We recommend a debris fence be installed at the time of development of the structures. Debris fencing
should be designed in consideration of the building locations relative to the over steepened slope.
If you have any questions regarding this letter, please feel free to contact our office.
Sincerely,
ENGINEERING DESIGN GROUP
I .)
Erin Rist
Project Engineer
RCE 65122
E. RECEIVED
No JUN 29 2016 Exp. 09/30/2015
LAND DEVELOPMENT
ENGINEERING
Project No. 135229-1
Z:\2013\HALL, LUCY ANN TRUSTEE - 4400 PARK DRIVE - 135229-1\REPORTS, LETrERS\PLAN REVIEW hR 2-10-14.wpd