HomeMy WebLinkAboutCT 81-46; CONERSTONE CORPORATE CENTER; RESPONSE TO GEOTECHNICAL INVESTIGATION; 1997-04-14t'· GEOCON ~ ~
_r_N_c_o_R_r_o_R_A_T_E _o ___________________ G_EO-TEC_H_N_ICA_L_C_O_N_S_U_L_TA_N_T_S .,
Project No. 0572-+-I 2-0 I
April 14, 1997
Newport National Corporation
5050 Avenida Encinas, Suite 350
Carlsbad, California 92008
Attention: Mr. James R. Mccann
Subject: CORNERSTONE CORPORA TE CENTER
CARLSBAD TRACT NO. 81-46
CARLSBAD. CALIFORNIA
SLOPE GRADING
Reference: Geotechnical Investigation, Carlsbad Tract No. 81-45, Unit 1, Lots 7, 8, 11, and 15,
Carlsbad, California, prepared by Geocon Incorporated, dated May 8, 1996
Gentlemen:
In accordance with your request, we have provided supplemental geotechnical engineering services
for the subject development. The scope of these services incjuded an evaluation of the need to
provide benching at 30-foot height intervals during grading of fill slopes 30 feet and higher.
It is our understanding that grading associated with the initial development (Building D) will lower
the elevation within Lot 11 (previously identified as Lot 8). Along the north side of Lot 11, the
existing fill slope is approximately 35 feet high. The grade change of 20 feet will therefore create a
slope of about 55 feet high. As recommended in the referenced geotechnical report, the lower
portion of the slope will be constructed as a stability fill.
Based on the above discussion, it is our opinion that benching is not required for fill-slopes with
heights greater than 30 feet.
If you have any questions regarding this letter, or if we may be of further service, please contact the
undersigned at your convenience.
Very truly yours,
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Addressee
Latitude 33
Attention: Mr. Tony Wonsisky
Brian Paul Architects
Attention: Mr. Len Zegarski
6960 Flanders Drive ■ San Diego, California 92121-297 4 ■ Telephone (619) 558-6900 ■ Fax (619) 558-6159