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Home My WebLink AboutCT 2018-0002; AVIARA APARTMENTS EAST; RESPONSE TO PLAN REVIEW COMMENTS FOR TEMPORARY AND PERMANENT SHORING DESIGN; 2023-01-11SHORING DESIGN GROUP January 11, 2023 Mr. Jeff Williams Bridge Housing Phone (619) 814‐1281 4142 Adams Avenue, Suite 103‐627 San Diego, CA 92116 Re: Aviara Apartments JOB #22‐164 Carlsbad, California Subject: Response to Plan Review Comments Prepared by True North, Dated 11‐20‐22 Response to Comments on Plans Prepared by Land Development Engineering Dated 12‐9‐22 Dear Mr. Williams: Shoring Design Group is in receipt of the 2nd review comments prepared by the City of Carlsbad, regarding the above referenced project. In response, Shoring Design Group (SDG) offers the following responses: Response to Plan Review Comments, Prepared by True North, Dated 1‐5‐23 STRUCTURAL COMMENTS: General 1. As requested, please see updated reference geotechnical report that now includes the report/project number. Structural Calculations 2. Shoring calculations are based on the temporary & permanent allowable passive pressure values provided in the geotechnical report without limitation (see figures 7 & 9). For clarity, please see the attached geotechnical letter that verifies the use of the passive earth pressures. 3. Please see page 75 of the shoring design calculations for the seismic earth pressure added to the design, resulting in a net static + seismic pressure of 45pcf + 15pcf = 60pcf. ^ƚƌƵĐƚƵƌĂůĂůĐƵůĂƚŝŽŶƐ;ŽŶƚŝŶƵĞĚͿ ϰ͘dŚĞĞĂƌƚŚƉƌĞƐƐƵƌĞŵŽĚĞůƵƐĞĚƚŽĚĞƐŝŐŶƚŚĞůĂŐŐŝŶŐ͕ŝƐĂǀĂƌŝĂƚŝŽŶŽĨdĞƌǌĂŐŚŝ͛ƐƚƌĂƉ ĚŽŽƌ͕ƚŚĂƚŝƐƉƵďůŝƐŚĞĚĂŶĚƵƐĞĚŝŶƚŚĞŝŶĚƵƐƚƌǇĨŽƌǇĞĂƌƐ͘&ŽƌĐůĂƌŝƚǇ͕ƉůĞĂƐĞƐĞĞƚŚĞ ĂƚƚĂĐŚĞĚŐĞŽƚĞĐŚŶŝĐĂůůĞƚƚĞƌƉƌŽǀŝĚŝŶŐĂƉƉƌŽǀĂůŽĨƚŚĞůŽĂĚƉƌĞƐƐƵƌĞŵĞƚŚŽĚŽůŽŐǇ͘ ZĞƐƉŽŶƐĞƚŽŽŵŵĞŶƚƐŽŶWůĂŶƐ͕WƌĞƉĂƌĞĚďǇ>ĂŶĚĞǀĞůŽƉŵĞŶƚ͕ĂƚĞĚϭϮͲϵͲϮϮ ZĞƐƉŽŶƐĞƚŽŽƌƌĞĐƚŝŽŶƐŽŶ^ŚĞĞƚϭ WůĞĂƐĞƐĞĞƵƉĚĂƚĞĚƐŚĞĞƚϭƚŚĂƚŶŽǁŵĂŬĞƐƌĞĨĞƌĞŶĐĞƚŽt'ϱϯϱͲϭ͕'ZϮϬϮϮͲϬϬϭϳ͘ ZĞƐƉŽŶƐĞƚŽŽƌƌĞĐƚŝŽŶƐŽŶ^ŚĞĞƚϰ ͲWůĞĂƐĞƐĞĞƵƉĚĂƚĞĚĐĂůůŽƵƚƚŽƚŚĞϯ͟Ws^ĐŚ͘ϰϬƐƵďĚƌĂŝŶƉŝƉĞ;ĂƐƉƌŽǀŝĚĞĚͿ͘ ͲWůĞĂƐĞƐĞĞ͞^͟ŶŽƚĂƚŝŽŶĂůŽŶŐƚŚĞƉƌŽƉŽƐĞĚƐƵďͲĚƌĂŝŶƉŝƉĞ͘ ͲWůĞĂƐĞƐĞĞƵƉĚĂƚĞĚƌĞĨĞƌĞŶĐĞƚŽƐƵďĚƌĂŝŶʹĐĂƚĐŚďĂƐŝŶĐŽŶŶĞĐƚŝŽŶƉĞƌt'ϱϯϱͲϭ͘ ͲWůĞĂƐĞƐĞĞƵƉĚĂƚĞĚ͞ƌŝŐŚƚͲŽĨͲǁĂǇ͟ƚĞǆƚƚŚĂŶŚĂƐďĞĞŶŵŽǀĞĚƚŽƉŽŝŶƚƚŚĂƚƚŚĞZtůŝŶĞ͘ ZĞƐƉŽŶƐĞƚŽŽƌƌĞĐƚŝŽŶƐŽŶ^ŚĞĞƚϲ ĞƚĂŝůϰͬ^,ϲ͗WůĞĂƐĞƐĞĞƵƉĚĂƚĞĚƌĞĨĞƌĞŶĐĞƚŽƚŚĞϯ͟Ws^ĐŚ͘ϰϬƐƵďĚƌĂŝŶ͘ ^ŚŽƵůĚǇŽƵŚĂǀĞĂŶǇĂĚĚŝƚŝŽŶĂůƋƵĞƐƚŝŽŶƐŽƌĐŽŵŵĞŶƚƐƌĞŐĂƌĚŝŶŐƚŚŝƐŵĂƚƚĞƌ͕ƉůĞĂƐĞĂĚǀŝƐĞ͘ ^ŝŶĐĞƌĞůǇ͕ ^,KZ/E'^/'E'ZKhW͕ ZŽǇW͘ZĞĞĚ͕W͘͘ WƌŽũĞĐƚŶŐŝŶĞĞƌ Retaining walls City of Carlsbad SECOND REVIEW 1205 Aviara Pkwy City Permit No.: PC2022-0053 January 5, 2023 True North No.: 22-018-401 Page 2 Plan Review Comments RESUBMITTAL INSTRUCTIONS: Please do not resubmit plans until all departments have completed their reviews. For status, please contact building@carlsbadca.gov Deliver THREE corrected sets of plans and TWO corrected calculations/reports directly to the City of Carlsbad Building Division, 1635 Faraday Ave., Carlsbad, CA 92008, (442) 339-2719. The City will route the plans to True North, Planning and Land Development Engineering Departments (if applicable) for continued review. Note: If this project requires FIRE PREVENTION review, ensure that you follow their specific instructions for resubmittal review. The City will not route plans back to Dennis Grubb & Associates for continued Fire Prevention review. GENERAL INFORMATION: A. The following comments are referred to the 2019 California Building, Mechanical, Plumbing, Electrical Codes, California Green Building Standards Code, and Energy Code (i.e., 2018 IBC, UMC, UPC, and 2017 NEC, as amended by the State of California). B. There may be other comments generated by the Building Division and/or other City departments that will also require your attention and response. This attached list of comments, then, is only a portion of the plan review. Contact the City for other items. C. Respond in writing to each comment by marking the attached comment list or creating a response letter. Indicate which details, specification, or calculation shows the required information. Your complete and clear responses will expedite the re-check. D. amp and signature on all sheets of the drawings and on the coversheets of specifications and calculations per CBPC 5536.1 and CBPC 6735. This item will be verified prior to plan approval. OCCUPANCY & BUILDING SUMMARY: Occupancy Groups: N/A Occupant Load: N/A Type of Construction: N/A Sprinklers: N/A Stories: N/A Area of Work (sq. ft.): N/A sq. ft. ARCHITECTURAL COMMENTS: No Comments. Retaining walls City of Carlsbad SECOND REVIEW 1205 Aviara Pkwy City Permit No.: PC2022-0053 January 5, 2023 True North No.: 22-018-401 Page 3 STRUCTURAL COMMENTS: General: S1. On Sheet 3, in Design Criteria Note #1: Also list geotechnical report/project number: SD722. Plans: No comments. Structural Calculations: S2. Provide confirmation from the geotechnical engineer that it is acceptable to use passive pressure resistance of (350 pcf)(H) without limit. S3. Per Structural drawing, several soldier piles (SB #8 -#13) are permanent. In the design for those permanent soldier piles, include seismic earth pressure 15H psf in addition to static active earth pressure (45H psf or 60H psf) as suggested in Figure 7 of geotechnical report. S4. In timber lagging design, the lateral soil pressure distribution is based on certain "lagging soil wedge function". Provide approval from the geotechnical engineer. If you have any questions regarding the above comments, please contact Alex Wu via email alexw@tncservices.com or telephone (562) 733-8030. [END] Shoring Design Group 7727 Caminito Liliana San Diego, CA 92129 Aviara Apartments East Eng: RPR Sheet____of____ Date: 10/26/2022 Lateral Live Load Surcharge Uniform Loading Full 72 psf= Uniform loading full soldier beam height Partial 0 psf= Uniform loading partial soldier beam height Hpar 0 ft= Height of partial uniform surcharge loading Ps y( ) Full Partial0 ftyHparif Full Hpar yHif 0 psfotherwise  Uniform surcharge profile per depth Eccentric/Conncentric Axial & Lateral Point Loading Pr 0 kip= Applied axial load per beam e 0 in= Eccentricity of applied compressive load Me Pr e xt = Eccentric bending moment Ph 0 lb= lateral pont load at depth "zh" zh 0 ft= Distance to lateral point load from top of wall Seismic Lateral Load EFP 15 pcf= Seismic force equivalent fluid pressure Es EFP H= Maximum seismic force pressure Eq y( ) EFP yyHif 0 psfotherwise = Maximum seismic force pressure Cantilever H = 10' sb 8-13 (P)_R1.xmcdz