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Home My WebLink AboutCDP 03-12; ADAMS STREET SFR NORTH; GEOTECHNICAL FOUNDATION PLAN REVIEW; 2019-08-20. , iceovt1 ~ \()/1 16' VIN E & MIDDLETON ENGINEER! G, INC. Job #19-118-F August 20, 2019 James Chambers P.O. Box 1571 Solana Beach, CA 92075 costacasa@gmail.com 2450 Auto Park Way Escondido, California 92029-1229 Phone (760) 743-1214 Fax (760) 739-0343 Pnj . , o : c. or> o 3 -1-z ~, vw: VWG 423-ill ~~l \-vu> ·. G~ 2ot 6\ -(){)}ii GEOTECHNICAL FOUNDATION PLAN REVIEW, PROPOSED RESIDENTIAL DEVELOPMENT, 4575 PARK DRIVE, CARLSBAD, CALIFORNIA (A.P.N. 206-192-34, PLAN CHECK #CBR2019-1257, COASTAL DEVELOPMENT PERMIT #CDP 03-12) I. Introduction We have received the pertinent Architectural Plans, prepared by Andrew Wilt Designs (sheets 1, 2, 4-8, and 12, no date), project Foundation Plans and Details prepared by Mike Surprenant & Associates Consulting Structural Engineers (sheets S-1 to S-6, SD1, and SD2, issue date June 19, 2019) for the proposed res idential development referenced above. Reference is made to the followi ng techn ical reports issued by this office, in support of a proposed residential development at the property: A. Update Compaction Report, Graded Pad, 4575 Park Drive, Carlsbad , California ," Job #19-118-F, re port dated March 25, 2019. B. As-Graded Compaction Report and Foundation Recommendations for Proposed Single Family Residence Located at 4575 Park Drive, City of Carlsbad Drawing #423-SA, Project #CDP 03-12, Job #05-422-F, report dated April 25, 2006. The purpose of this transmittal is to review the project architectural and foundation plans & details, provided to us, for their compatibility with the referenced reports and site indicated geotechnical condtions. II. Foundation Plan Review Based on our review of drawings made available to us, and from a geotechnical engineering point of view, the project foundation plans and details provided to us are generally in compliance with the geotechncial report referenced above. The following corrections and comments are should be considered where appropriate and applicable. James Chambers August 20, 2019 Page 2 • The referenced Geotechnical Report and this review letter should be considered a part of the project Foundation Plan and Details. • The Architectural Plans show the construction of a three-story structure (the referenced reports covered one and two-story structures). Continuous building perimeter footings for three-story structures should measure 18-inches wide by 24- inches deep, measured from the lowest adjacent ground surface. Reinforcement remains 4-#4 continuous reinforcing bars (two top and two bottom). • Bottom of foundation trenches shall be level. However, should step foundation trench excavations be necessary, steps in continuous footings should not exceed one vertical rise to two horizontal run maximum with individual steps less than 18 inches in maximum height, and maintain minimum widths, depths and reinforcement as specified. • Foundation trenches should be inspected and tested for exposing suitable bearing strata and approved by the project geotechnical consultant prior to the placement of steel reinforcement and concrete. • Concrete slab reinforcement should consist of 3# reinforcing bars placed at 18- inches on center each way placed mid-height in the slab (Sheet S-3 indicates #3 bars at 24 inches on center). Sheet S-3 also indicates a 10-mil moisture barrier, which will be adequate from a geotechnical viewpoint. • The referenced Update Compaction report indicates that spread footings should be a minimum of 30-inches square. The Spread Footing Schedule on Sheet S-2 shows a 24-inch square spread footing , which is also acceptable from a geotechnical viewpoint. • Soil design parameters and seismic ground motion values, will remain the same as specified in the referenced reports. VINJE & MIDDLETON ENGINEERING, INC. • 2450 Auto Park Way • Escondido, California 92029-1 229 • Phone (760) 743-1214 James Chambers August19,2019 Page 3 Ill. Limitations .. This geotechnical foundation plan review is not a "Plan Check Review" and does not relieve the responsibility of the project design consultant(s) and contractor(s) to get completely familiarized with the requirements of the project soil report(s) and fully incorporate its recommendations into the project design, plans and construction work, where appropriate, and as applicable. Our review and comments are for general geotechnical conformance of the project plans with the intent of the project soil report and design recommendations. Review of structural and civil engineering calculations, architectural intent, structural and civil engineering design modeling and basis, verification of set back requirements, easements and right-of-ways , as well as code, city, and county compliance are beyond geotechnical engineering services. It is the owner's or his (her) representative's responsibility to provided copies of all pertinent soil report(s), updates, addendum letters, and plan review letters to respective design consultant(s), and general contractor and his (her) subcontractor(s) for full compliance. This opportunity to be of service again is sincerely appreciated. If you have any questions or need clarification, please do not hesitate to contact the undersigned. Reference to our Job #19-118-F will help to expedite our response to your inquiries. Steven J. Mel r CEG #2362 ON ENGINEERING, INC. V1NJE & MIDDLETON ENGINEERING, INC. • 2450 Auto Park Way• Escondido, California 92029-1229 • Phone (760) 743-1214