HomeMy WebLinkAbout20221123_REVISED_Bulkhead Conditions Report
WILLIAM SIMPSON & ASSOCIATES, INC.
CONSULTING STRUCTURAL ENGINEERS
23 ORCHARD, SUITE 250 H. (949) 206-9929
LAKE FOREST, CA 92630 FAX (949) 206-9955
www.wsase.com e-mail: Tmail@wsase.comT
November 13, 2020 Mr. Ronald Ritner Ritner Group 503 32nd St., Suite#130
Newport Beach, CA 92663
RE: BULKHEAD CONDITIONS REPORT IN RESPONSE TO ITEM 7 OF NOTICE OF INCOMPLATE APPLICATION Application No. Coastal Development Permit No. CD2020-135 (PA2020-256)
Address: 74 Linda Isle
Newport Beach, County of Orange WSA Job # 7507 Dear Mr. Ritner,
William Simpson & Associates, Inc., (WSA) is pleased to provide this report in accordance with Section 21.30.15.E.3 of City of Newport Beach Municipal Code. STATEMENT OF THE PREPARER’S QUALIFICATIONS I, the preparer of this report, holding a Bachelor of Science Degree in Structural Engineering from Tehran, Iran, am a Licensed Civil and Structural Engineer - Certificate Nos. C43673 and S3812, respectively - by the State of California. I joined the company in 1987 and am now partly the owner, and serve as the principal in charge of the company. I have been actively involved in the design and entitlement of waterfront developments such as custom homes, seawalls,
piers, platforms, floating docks and marinas for over 30 years. All the above being said, I shall be considered qualified for preparing the Coastal Hazards Analysis Report on this project. OBSERVATION A cursory observation of the existing seawall/bulkhead was conducted by a representative of our office on June 11, 2020. Observed was the visible portion of the waterfront faces of the seawall and the cantilevered deck. Due to the site conditions, tie-backs were not accessible, thus not
observed.
FINDINGS The jetted-in pre-cast concrete panels and the cast-in-place coping of the seawall along with the cantilevered concrete deck were found generally in good condition with minor repairable cracks which is typical for a concrete structure of this vintage.
CONCLUSION & DESCRIPTION OF PROPOSED WORK
Based on our site observation, we conclude that the existing seawall is required to protect
the proposed principal structure on the lot. To be able to do so, the seawall shall be
repaired/reinforced as reflected on the enclosed Drawings S-0 thru S-2. The proposed work on the
seawall and the concrete deck consist of the following:
1. Demolition of the existing cantilevered concrete deck.
2. Installation of deadman and tiebacks while the lot is vacant, after demolition of the
existing house is completed and prior to the beginning of the construction of the new
house.
3. Form and pour new cantilevered concrete deck with concrete wall along the entire
bayward edge of the deck with top of wall elevation of +10.70’NAVD88.
The above listed construction work shall not require use of mechanized equipment or a
barge on the water, and consist of the following:
Once the seawall is reinforced in accordance with the enclosed drawings, no repair or
replacement of the seawall shall be anticipated in the next 75. If during this period though, the
seawall displays any sign of distress that requires immediate attention, it should be repaired or
replaced at that time accordingly, without seaward encroachment from its current location.
The above conclusion and description of proposed work were prepared based on the
existing conditions, proposed drawings, and within the inherent limitations of this study, in
accordance with generally acceptable engineering principles and practices. We make no further
warranty, either expressed or implied.
William Simpson & Associates, Inc. appreciates the opportunity to work with you towards
the successful completion of your project. Should you have any questions regarding this report,
please give us a call.
Respectfully submitted,
Masoud Jafari, S.E.
Principal
Enclosures:
Seawall Drawings S-0 thru S-2