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Home My WebLink About2762 UNICORNIO ST; ; CB984235; PermitCity of Carlsbad 03/17/1999 Building Permit Permit No:CB984235 Job Address: Permit Type: Parcel No: Valuation: Occupancy Group: Project Title: Building Inspection Request Line (760) 438-3101 2762 UNICORNIO ST CBAD RETAIN Sub Type: 2153506000 Lot#: $10,871.00 Construction Type: NEW Reference #: RETAIN WALLS 737 SF W/CALCS LC MEADOWS/UNICONIO PATIO HOM Status: Appl ied: Entered By: Appr/lssued: lnspect Area: ISSUED 12/07/1998 JM 03/17/1999 75'•8 03/17/99 0001 01 02 Applicant: CHRONISTER GARY 26440 LA ALAMEDA #370 92691 949 582-4111 Total Fees: $202.93 Description BLDG PLAN CHECK BUILDING PMTS STRNG MOTION Inspector: Owner: FORGEON, KENT Total Payments To Date: $0.00 PP OVAL Date: q q'i_ Balance Due: Clearance: C-PRMT 202-93 $202.93 Fee 79.51 122 .33 1. 09 NOTICE: Please take at a ppr al of your project includes the "Imposition' of fees, dedications, reservations, or other exactions hereafter collectively referred to as ·tees/exactions.' You have 90 days from the date this permit was issued to protest imposition of these fees/exactions. If you protest them, you must follow the protest procedures set forth in Government Code Section 66020(a), and file the protest and any other required information with the City Manager for processing in accordance w~h Carlsbad Municipal Code Section 3.32.030. Failure to timely follow that procedure will bar any subsequent legal action to attack, review, set aside, void, or annul their imposition. You are hereby FURTHER NOTIFIED that your right to protest the specified fees/exactk>ns DOES NOT APPLY to water and sewer connection fees and capactiy changes, nor planning, zoning, grading or other similar application processing or service fees in connection with this project NOR DOES IT APPLY to any fees/exactions of which ou have reviousl been iven a NOTICE similar to this or as to which the statute of limitations has reviousl otherwise ex ired. CITY OF CARLSBAD 2075 Las Palmas Dr., Carlsbad, CA 92009 (760) 438-1161 M FOR OFFICE USE 0 PERMIT APPLICATION CITY OF CARLSBAD BUILDING DEPARTMENT 2075 Las Palmas Dr., Carlsbad CA 92009 EST. VAL.~;;,, ......... ..._..____. _____ _ Plan Ck. Deposit ___________ _ Validated By \ /JV\. L ~1 (760) 438-1161 Date <V 72{2fT4J 1. PROJECT INFORMATION/ \)N\C.~f\\)l~ Address (include Bld~uite #) ~ 9-rr Cf\CA1\JA - L r _ Business Nl_me (at this address) 1:\ '-0S"l'A Yn~A~~S /"-lN\CCA(\)L~ legal Description lot No. Subdivision Name/Number Unit No. "I~<:..~ Ass~or"s Parcel# \"\\:~\Y" \J Description of Work SO. FT. 2. c:;;ACT PERSON (if different from applicant) l\f\ Y c:. \,\ ~ N ''ST~ R,, Name Address 3. APPLICANT 0 Contractor O Agent for Contractor --- #of Stories City 0 Agent for Owner ~~ Proposed Use --# of Bedrooms # of Bathrooms Name Address City State/Zip Telephone# 4. PROPERTY OWNER LA co~-m Yn'c:A-O~S "lj, LLQ. / n'-JA\._l;S'y) \:\~S Name Address City Telephone# 5. CONTRACTOR • COMPANY NAME (Sec. 7031.5 Business and Professions Code: Any City or County which requires a permit to construct. alter, improve, demolish or repair any structure, prior to its issuance, also requires the applicant for such permit to file a signed statement that he is licensed pursuant to the provisions of the Contractor's license Law (Chapter 9, commending with Section 7000 of Division 3 of the Business and Professions Code) or that he is exempt therefrom, and the basis for the alleged exem tioc. A~v~~ (~f.S~ 7l3A.:J~c~nt ~ ~mi~~jects th applic:nm~ ii penalty of not more than five hundred dollars I $500]). Address State/Zip ~~c~n~as~-~ __ Y3_\.l_~_\.\_c_:__s_l City Business license # -...,,.-----'Y!i~'".!;,;.,,.._'->-,: 9 'Uo\ Designer Name "I:, State license # ~;ti<::::>(oo Address City State/Zip Telephone --='---------6. WORKERS' COMPENSATION Workers' Compensation Declaration: I hereby affirm under penalty of perjury one of the following declarations: 0 I have and will maintain a certificate of consent to self-insure for workers' compensation as provided by Section 3700 of the Labor Code, for the performance of tywork for which this permit is issued. Q" I have and will maintain workers' compensation, as required by Section 3700 of the labor Code, for the performance of the work for which this permit is issued. My worker's compensation insurance carrier and policy number are: q ~ J.l ·\-C-b Insurance Company ~~ funn Policy No. '\'i~ \S~\ -0 Expiration Date -I,, l J -----~-- (TH IS SECTION NEED NOT BE COMPLETED IF THE PERMIT IS FOR ONE HUNDRED DOLLARS ($100) OR LESS) 0 CERTIFICATE OF EXEMPTION: I certify that in the performance of the work for which this permit is issued, I shall not employ any person in any manner so as to become subject to the Workers' Compensation laws of California. nlawful, and shall subject an employer to criminal penalties and civil fines up to one hundred damages as provided for in Section 3706 of the Labor code, interest and attorney's fees. SIGNATURE __ .=c__.:,,e__:_ _ ___;l--"'-e:::_-3<-=.....:___..:. ___ -=------------ ~- I hereby affirm that I am exempt from the Contractor's License law for the following reason: 0 I, as owner of the property or my employees with wages as their sole compensation, will do the work and the structure is not intended or offered for sale (Sec. 7044, Business and Professions Code: The Contractor's License Law does not apply to an owner of property who builds or improves thereon, and who does such w imself or through his own employees, provided that such improvements are not intended or offered for sale. If, however, the building or improvement is sold 1thin one year of completion, the owner-builder will have the burden of proving that he did not build or improve for the purpose of sale). I, as owner of the property, am exclusively contracting with licensed contractors to construct the project (Sec. 7044, Business and Professions Code: The Contractor's License Law does not apply to an owner of property who builds or improves thereon, and contracts for such projects with contractor(s) licensed pursuant to the Contractor's License law). 0 I am exempt under Section ______ Business and Professions Code for this reason: 1. I personally plan to provide the major labor and materials for construction of the proposed property improvement. 0 YES ONO 2. I (have / have not) signed an application for a building permit for the proposed work. 3. I have contracted with the following person (firm) to provide the proposed construction (include name / address / phone number / contractors license number): 4. I plan to provide portions of the work, but I have hired the following person to coordinate, supervise and provide the major work (include name / address / phone number/ contractors license number): ______________________________________________ _ 5. I will provide some of the work, but I have contracted (hired) the followin persons to provide the work indicated (include name / address / phone number / type of work): ________ ---1'1-~J",:--:;;.;;,:;;::-:--:--t'rl:J.r:.~~.;~:;;:::;;,:--;;:,.-,f_-J~;;=:----------------------------- PROPERTY OWNER SIGNATURE -3-,,_,;1..-"""a-==----\---===-..,;._----=-----------DATE COMPLETE THIS SECTION FOR NON-RESIDENTIAL B Is the applicant or future building occupant required to submit a business pl program under Sections 25505, 25533 or 25534 of the Presley-Tanner Hazar ----------- , acutely hazardous materials registration form or risk management and prevention D YES D NO e air pollution control district or air quality management district? O YES O NO D YES D NO IF ANY OF THE ANSWERS ARE YES, A FINAL CERTIFICATE OF OC UPANCY MAY NOT BE ISSUED UNLESS THE APPLICANT HAS MET OR IS MEETING THE REQUIREMENTS OF THE OFFICE OF EMERGENCY SERVICES AND HE Al UTION CONTROL DISTRICT. 8. CONSTRUCTION LENDING AGENCY I hereby affirm that there is a construction lending agency for the formance of the work for which this permit is issued (Sec. 3097(i) Civil Code). LENDER'S NAME ______________ _ 9. APPLICANT CERTIFICATION I certify that I have read the application and state that the above information is correct and that the information on the plans is accurate. I agree to comply with all City ordinances and State laws relating to building construction. I hereby authorize representatives of the Cit\! of Carlsbad to enter upon the above mentioned property for inspection purposes. I ALSO AGREE TO SAVE, INDEMNIFY AND KEEP HARMLESS THE CITY OF CARLSBAD AGAINST ALL LIABILITIES, JUDGMENTS, COSTS AND EXPENSES WHICH MAY IN ANY WAY ACCRUE AGAINST SAID CITY IN CONSEQUENCE OF THE GRANTING OF THIS PERMIT. OSHA: An OSHA permit is required for excavations over 5'0" deep and demolition or construction of structures over 3 stories in height. EXPIRATION: Every permit issued by the Building Official under the provisions of this Code shall expire by limitation and become null and void if the building or work authorized by such permit i not commenced within 365 d s from the date of such permit or if the building or work authorized by such permit is suspended or abandoned at any time r th ark is c m d for erio of 180 ays (Section 106.4.4 Uniform Building Code). \~ S\ _ t-J \/ APPLICANT'S SIGNATURE ~~p._µ,.,iJ...:!ll-~..J.;~!13...L~!!,,,,1!.Y~------------DATE oV I l 4 PINK: Finance Inspection List Permit#: CB984235 Type: RETAIN RETAIN WALLS 737 SF Date Inspection Item 4/8/99 66 Grout 4/7/99 66 Grout 4/6/99 62 Steel/Bond Beam 4/6/99 66 Grout 4/1/99 62 Steel/Bond Beam 4/1/99 62 Steel/Bond Beam 4/1/99 66 Grout 3/29/99 61 Footing 3/26/99 61 Footing 3/25/99 61 Footing Friday, November 19, 1999 W/CALCS LC MEADOWS/UNICONIO PA Act Comments Inspector ------'--------- PY AP PY AP PY AP PY AP PY AP PY WC PY AP PY AP PY AP PY AP GROUT ? LOT 1-5 TOTAL FOOTING OK LOT 3-5 LOT 1 PART OF 3/ PART 3 -PART 4 Page 1 of 1 City of Carlsbad Inspection Request For: 4/8/99 Permit# CB984235 Inspector Assignment: PY --- Title: RETAIN WALLS 737 SF Description: W/CALCS LC MEADOWS/UNICONIO PATIO HOM Type: RETAIN Sub Type: Job Address: Suite: Location: 2762 UNICORNIO ST Lot C\PPLICANT : CHRONISTER GARY Owner: FORGEON KENT&CYNTHIA M Remarks: Total Time: CD Description 66 Grout Inspection History Date Description 4/6/99 62 Steel/Bond Beam 4/6/99 66 Grout 4/1/99 62 Steel/Bond Beam 4/1/99 62 Steel/Bond Beam 4/1/99 66 Grout 3/29/99 61 Footing 3/26/99 61 Footing 3/25/99 61 Footing Act Act AP AP AP WC AP AP AP AP lnsp PY PY PY PY PY PY PY PY Comments ? LOT 1-5 Phone: 7609299577 Inspector: ----- Requested By: BOB Entered By: CHRISTINE TOTAL FOOTING OK LOT 3-5 LOT 1 PART OF 3/ PART 3 -PART 4 C)S--t...jZ-3~ 27(p1-UNl~c...u LEIGHTOrl ANO ASSOCIATES, INC. Geotechnlcal and Environmental Engineering Consultants FOOTING OBSERVATION SUMMARY Project Name: /1 ,, • J./4 J \ L A{pp,t, MrA:2-\.!) Project No.: <) l // 5 3 ·a -Z Location: _....ii~"..::'~' --:::.2..:..r;,...:1-::;L.1,:.!;,~=---... ::..1-..;._' ..--.1.,C,.....::fi...:..L1P-::..11L .... ,S....,_,,f1:...~=----------------1 Plan File No.: _.,..,.-___ _ Permit No.:CJE''-1 1.5 Unit/Ph~,§!.(s): _ _./_ .... _~_,J ____ _ Referenced Geotechnical Report(s): ____________________ _ Observation Summary .---,,. Initials ~Date ~Initials "".f.;_1.1.:1.Date A representative of Leighton and Associates observed onsite soil conditions. Soil conditions at the site are substantially in conformance with those assumed in the geotechnical report. A representative of Leighton and Associates observed and measured footing excavation depth/width. Footing excavations extend to proper depth and bearing strata and are in general conformance with recommendations of the geotechnical report A representative of Leighton and Associates measured footing setback from slope face. The setback was in general accordance with the recommendations of the geotechnical report Geo t o I-a, 5 I= ' , .., Notes to Superintendent/Foreman J ,..... ( 1. Footing excavations should be cleaned of loose debris and thoroughly moistened just prior to placing concrete. 2. Based on expansion potential of underlying soils, presoaking of soil below slabs may be recommended. Consult the geotechnical report for presoak:ing recommendations. We note that clayey soils may take an extended period of time and the contractor should schedule accordingly. 3. In the event of a site change subsequent to our footing observation and prior to concrete placement (i.e., heavy rain, etc.), we should be contacted to perform additional site observations. Notes to Building Inspector 1. Soil compaction test results, including depth of fill, relative compaction, bearing values, and soil expansion in1ex test results are contained in the As-Graded Geotechnical Report provided at the completion grading. Repr tative of Leighton and Associates, Inc. Date 3934 MURPHY CANYON ROAD, SUITE B205. SAN DIEGO, CA 92123 , (619) 292-8030 • (800) 447-2626 FAX (619) 292-0771 EsGil Corporation 2n Partnusfi.ip witli. (jovemment f or 'lJuifaing SafttJ DATE: 2/12/99 JURISDICTION: Carlsbad PLAN CHECK NO.: 98-4235 PROJECT ADDRESS: Tract 89-17 PROJECT NAME: Retaining Walls SET: II ,-0-APPUCA._NT ~ □ PLAN REVIEWER □ FILE D The plans transmitted herewith have been corrected where necessary and substantially comply with the jurisdiction's building codes. [8:1 The plans transmitted herewith will substantially comply with the jurisdiction's building codes when minor deficiencies identified below are resolved and checked by building department staff. D The plans transmitted herewith have significant deficiencies identified on the enclosed check list and should be corrected and resubmitted for a complete recheck. D The check list transmitted herewith is for your information. The plans are being held at Esgil Corporation until corrected plans are submitted for recheck. D The applicant's copy of the check list is enclosed for the jurisdiction to forward to the applicant contact person. D The applicant's copy of the check list has been sent to: [8:1 Esgil Corporation staff did not advise the applicant that the plan check has been completed. D Esgil Corporation staff did advise the applicant that the plan check has been completed. Person contacted: Telephone#: Date contacted: (by: ) Fax#: Mail Telephone Fax In Person [8:1 REMARKS: All sheets of the retaining wall plan (81/2x11) shall be signed and sealed by the engineer. By: David Yao Enclosures: Esgil Corporation 0 GA O MB O EJ O PC 2/4 trnsmtl.dot 9320 Chesapeake Drive, Suite 208 ♦ San Diego, California 92123 ♦ (619) 560-1468 ♦ Fax (619) 560-1576 EsGil Corporation 1n Partnusfiip witli (jovemmlnt for 'lJuiUing Safety DATE: 12/ 18/98 JURISDICTION: Carlsbad PLAN CHECK NO.: 984235.doc PROJECT ADDRESS: Tract 89-17 PROJECT NAME: Retaining Walls SET: I 0 APPLICANT ~ 0 PLAN REVIEWER 0 FILE D The plans transmitted herewith have been corrected where necessary and substantially comply with the jurisdiction's building codes. D The plans transmitted herewith will substantially comply with the jurisdiction's building codes when minor deficiencies identified below are resolved and checked by building department staff. D The plans transmitted herewith have significant deficiencies identified on the enclosed check list and should be corrected and resubmitted for a complete recheck. ~ The check list transmitted herewith is for your information. The plans are being held at Esgil Corporation until corrected plans are submitted for recheck. D The applicant's copy of the check list is enclosed for the jurisdiction to forward to the applicant contact person. ~ The applicant's copy of the check list has been sent to: Gary Chronister 26440 La Alameda #370 Mission Viejo CA 92691 ~ Esgil Corporation staff did not advise the applicant that the plan check has been completed . D Esgil Corporation staff did advise the applicant that the plan check has been completed. Person contacted: Telephone#: Date contacted: (by: ) Fax#: Mail Telephone Fax In Person □ REMARKS: By: David Yao Enclosures: Esgil Corporation □ GA □ MB □ EJ □ PC 12/10 trnsmtl.dot 9320 Chesapeake Drive, Suite 208 ♦ San Diego, California 92123 ♦ (619) 560-1468 ♦ Fax (619) 560-1576 Carlsbad 984235.doc 12/18/98 GENERAL PLAN CORRECTION LIST JURISDICTION: Carlsbad PROJECT ADDRESS: Tract 89-17 DATE PLAN RECEIVED BY ESGIL CORPORATION: 12/10 REVIEWED BY: David Yao FOREWORD (PLEASE READ): PLAN CHECK NO.: 984235.doc DATE REVIEW COMPLETED: 12/18/98 This plan review is limited to the technical requirements contained in the Uniform Building Code, Uniform Plumbing Code, Uniform Mechanical Code, National Electrical Code and state laws regulating energy conservation, noise attenuation and disabled access. This plan review is based on regulations enforced by the Building Department. You may have other corrections based on laws and ordinances enforced by the Planning Department, Engineering Department or other departments. The following items listed need clarification, modification or change. All items must be satisfied before the plans will be in conformance with the cited codes and regulations. Per Sec. 106.4.3, 1994 Uniform Building Code, the approval of the plans does not permit the violation of any state, county or city law. • 1. Please make all corrections on the original tracings and submit two new sets of prints to: ESGIL CORPORATION. 2. To facilitate rechecking, please identify, next to each item, the sheet of the plans upon which each correction on this sheet has been made and return this sheet with the revised plans. 3. Please indicate here if any changes have been made to the plans that are not a result of corrections from this list. If there are other changes, please briefly describe them and where they are located on the plans. Have changes been made not resulting from this list? D Yes □ No 4. All sheets of the final approved plan shall be signed and sealed by the engineer.(The specification and wall detail and schedule shall be on the final approved plan.) 5. Check with city to determine if the 81/2 x11 sheets can be used as approved plan. 6. The soil report shows the active pressure for the 2:1 slope backfill is 65 psf. Th e calculation used 45 psf. Please revise the calculation per the soils report. Carlsbad 984235.doc 12/18/98 7. The jurisdiction has contracted with Esgil Corporation located at 9320 Chesapeake Drive, Suite 208, San Diego, California 92123; telephone number of 619/560-1468, to perform the plan review for your project. If you have any questions regarding these plan review items, please contact David Yao at Esgil Corporation. Thank you. Carl~bad 984235.doc 12/18/98 VALUATION AND PLAN CHECK FEE JURISDICTION: Carlsbad PREPARED BY: David Yao BUILDING ADDRESS: Tract 89-17 BUILDING OCCUPANCY: BUILDING PORTION BUILDING AREA (ft. 2) Retaining wall Air ConditioninQ Fire Sprinklers TOTAL VALUE PLAN CHECK NO.: 984235.doc DATE: 12/18/98 TYPE OF CONSTRUCTION: VALUATION VALUE MULTIPLIER ($) 10871 (per city) D 199 USC Building Permit Fee IZ] Bldg. Permit Fee by ordinance: $ 122.33 D 199 USC Plan Check Fee IZ] Plan Check Fee by ordinance: $ 79.51 Type of Review: D Complete Review D Structural Only D Hourly D Repetitive Fee Applicable D Other: Esgil Plan Review Fee: $ 63.61 Comments: Sheet 1 of 1 macvalue.doc 5196 BUILDING PLANCHECK CHECKLIST RETAINING WALL BUILDING PLAN CHECK NUMBER: CB CJ 84 2.35' BU I LD I NG ADDRESS: _;Uw:.."-u..1t.i.,'c,µo~cvtJU4-L 1 @.c:....__..(G'""""Wi=D~k;....tdic.µ;..o.c..rY114e..,,+C-- PROJECT DESCRIPTION: _R __ e_;_t..:...a_in __ in....,_g_W_a_l __ l _____ _ ASSESSOR'S PARCEL NUMBER: ENGINEERING DEPARTMENT APPROVAL The item you have submitted for review has been approved. The approval is based on plans, information and/or specifications provided in your submittal; therefore, any changes to these items after this date, including field modifications, must be reviewed by this office to insure continued conformance with applicable codes. Please review carefully all comments attached, as failure to comply with instructions in this report can result in uspension of permit to build. ATTACHMENTS Right-of-Way Permit Application DENIAL Please see a ached report of deficiencies marked h □. ake necessary corrections to plans or tfications for compliance with applicable codes and standards. Submit corrected plans and/or specifications to this office for review. By:[)~;V~ Date: \ 2--/ Cf/ Y-B ~ I By: _________ Date: By: Date: --------- ENGINEERING DEPT. CONTACT PERSON NAME: DANNA TRIGS City of Carlsbad ADDRESS: 2075 Las Palmas Drive Carlsbad, CA 92009 PHONE: (760) 438-1161, ext. 4374 1\LASPALMASISYSII.IBRARYIENGIWORO\OOCSICHKLS1'Retaining Wall BIMl<ling Plancheck Cklsl Fom, BE.doc Rev. 6126196 2075 L as Palmas Dr. • Carlsbad, CA 92009-1576 • (760) 438-1161 • FAX (760) 431-5769 ~ • ~ 1 ST✓ 2ND✓ 3RD✓ 0 0 0 0 0 0 a 0 0 0 0 0 0 0 0 BUILDING PLANCHECK CHECKLIST RETAINING WALLS 1. Provide a fully dimensioned site plan drawn to scale. Show: A. North Arrow D. Easements B. Existing & Proposed Structures E. Retaining Wall (dimensioned from street) (location and height) C. Property Lines ~d\o" ~ ""~ds 2. Show on site plan: -\v 1,£. t\{Jgrov~ °'-"d 6raJ'.'j A. Drainage Patterns qe,, ~: t° \1\-l e.cu +o j?L ~ $.S v ~cl_ B. Existing & Proposed Slopes --Fe( DvJ<q 313--8. C. Existing Topography 3. Include on title sheet: A. Site Address B. Assessor's Parcel Number C. Legal Description D. Grading Quantities Cut Fill Import/Export (Grading Permit and Haul Route Permit may be required) 4. Project does not comply with the following Engineering Conditions of approval for Project No. Conditions were complied with by: Date: MISCELLANEOUS PERMITS 5. A RIGHT-OF-WAY PERMIT is required to do work in City Right-of-Way and/or private work adjacent to the public Right-of-Way. A separate Right-of-Way issued by the Engineering Department is required for the following: Please obtain an application for Right-of-Way permit from the Engineering Department. Page 1 1\1.ASPALMASISYSILIBRARY\ENGIWORDIOOCSICHKLST\Retaoning Wall Building Plancnecl< Ck~! Fom, BE.doc CTSCf-11 D~0 3,3 -B Rev. 61'26/08 PLANNINC/ENCINEERINC APPROVALS PERMIT NUMBER CB C/'S L/235= DATE /2-9-93 ADDRESS Ua i ccrn; o /cg CCi Wf:1 -CT BCJ-17 J RESIDENTIAL ADDITION MINOR ( < $10,000.00) PLANNER ~77::&. ENGINEER --------- ooes/MtstormS/Planntng Enotneenng At:Jprovats TENANT IMPROVEMENT PLAZA CAMINO REAL CARLSBAD COMPANY STORES VILLACE FAIRE COMPLETE OFFICE BUILDINC DATE /Z-9-C/c5 DATE ------- ~IR=--~ ----D -:: AGTG Compan" Leighton and Associates . GEOTECHNICAL CONSULTANTS February 1, 1999 To: Attention: Subject: Reference: A val on Homes 26440 La Alameda, Suite 370 Mission Viejo, California 92691 Mr. Gary Chronister Project No. 4971053-002 Revised Retaining Wall Design Parameters, Lots 484 and 485 of La Costa Meadows Unit 3, Carlsbad, California Leighton and Associates, Inc., 1998, Preliminary Geotechnical Investigation, Lots 484 and 485 of La Costa Meadows Unit 3, Carlsbad, California, Project No. 4971053-002, dated October30, 1998 In accordance with your request, this letter presents the revised retaining wall design parameters for the proposed retaining wall at the site (484 and 485 of La Costa Meadows Unit No. 3), located in Carlsbad, California. The retaining wall design parameters in the referenced preliminary geotechnical report (Leighton, 1998) assumed the retaining wall would be backfilled with soils possessing a moderate expansion potential (i.e. an expansion potential of less than 90 per Uniform Building Code [UBC] Standard 18-1). The following design parameters assume the retaining wall will be backfilled with granular (sandy) soils possessing a very low expansion potential (i.e. less than 20 per UBC Standard 18-1 ). These granular soils may consist of imported sand or gravel and/or sandy onsite soils. Whichever soil is used, a laboratory expansion potential test should be performed on a representative sample to ensure it meets the recommended expansion potential. Lateral Earth Pressures for Retaining Wall Design (Assuming Very Low Expansive Soils) Equivalent Fluid Weight (pct) (less than 20 per UBC 18-1) Conditions Level Backfill 2: 1 Sloping Backfill Active 30 45 At-Rest 60 70 Passive 300 300 3934 MURPHY CANYON ROAD , SUITE 8205 SAN DIEGO , CA 92123-4425 (619) 292-8030 • FAX (619) 292-0771 t:: .) u Embedded structural walls should be designed for lateral earth pressures exerted on them. The magnitude of these pressures depends on the amount of deformation that the wall can yield under load. If the wall can yield enough to mobilize the full shear strength of the soil, it can be designed for "active" pressure. If the wall cannot yield under the applied load, the shear strength of the soil cannot be mobilized and the earth pressure will be higher. Such walls should be designed for "at-rest" conditions. If a structure moves toward the soils, the resulting resistance developed by the soil is the "passive" resistance. For design purposes, the recommended equivalent fluid pressure for walls founded above the static ground water and backfilled with soils of very low expansion potential is provided in the previous table. The recommended equivalent fluid pressure for walls founded above the static ground water and backfilled with soils of moderate expansion potential is provided in Table 4 of the referenced geotechnical report (Leighton, 1998). The equivalent fluid pressure values assume free-draining conditions. If conditions other than those assumed above are anticipated, the equivalent fluid pressure values should be provided on an individual- case basis by the geotechnical engineer. Surcharge loading effects from the adjacent structures should be evaluated by the geotechnical and structural engineer. All retaining wall structures should be provided with appropriate drainage and appropriately waterproofed. The outlet pipe should be sloped to drain to a suitable outlet. Typical wall drainage design is presented in the referenced geotechnical report (Leighton, 1998). For sliding resistance, the friction coefficient of 0.35 may be used at the concrete and soil interface. In combining the total lateral resistance, the passive pressure or the frictional resistance should be reduced by 50 percent. Wall footings should be designed in accordance with structural considerations. The passive resistance value may be increased by one-third when considering loads of short duration such as wind or seismic loads. Wall back-cut excavations less than 5 feet in height can be made near vertical. For back cuts greater than 5 feet in height, but less than 15 feet in height, the back cut should be flattened to a gradient of not steeper than 1: I (horizontal to vertical) slope inclination. For back cuts in excess of 15 feet in excess of 15 feet in height, specific recommendations should be requested from the geotechnical consultant. The backfill soils should be compacted to at least 90 percent relative compaction (based on ASTM Test Method D1557-96). The walls should be constructed and backfilled as soon as possible after back-cut excavation. Prolonged exposure of back-cut slopes may result in some localized slope instability. Foundations for retaining walls in competent formational soils or properly compacted fill should be embedded at least 18 inches below lowest adjacent grade. At this depth, an allowable bearing capacity of 2,000 psfmay be assumed. ~u•=-~ ----=.._.-, -----= If you have any questions regarding this letter, please contact this office. We appreciate this opportunity to be of service. Distribution: (6) Addressee Respectfully submitted, LEIGHTON AND ASSOCIATES,INC. -IJUKWY- Randall K. Wagner, CEG 16 I 2 Project Geologist an , Engineering --01 ;::::: -;::: =.::: --...:;-i --~ --= TRACT 89-17 • • CITY OF CARLSBAD AVALON HOMES DAT£: 11 -13-98 8" 1 #4 CONT. ----l~ @ 32" o.c. CLEAN SAND BACKFILL W S.E. APPROVED BY SOILS ENGR. 2-#4 CONT. W/#2 TIE WIRE "8" BAR ----t--..""' #4 CONT. @ 18" 0 .C.--+--- '7" ''W" !GROUT ALL CELLS SOLID I BACKFILL: 90% COMPACTION WALL HT. 2 OR HEEL WIDTH WHICHEVER IS GREATER A :ic: (.) 0 ..J a:i • ~ • IO RETAINING WALL W/2:1 BACKFILL N.T.S. NOTE: • co I co g ~ 5: § 1-FOR WALL HT. 4 '-8" & LOWER DOWEL THE HA" BAR INTO nG. IN THE SAME CONFIGURATION AS "C" BAR. 2-FOR WALL HT. 5'-4 " TO 6 '-8" DOWEL THE "8" BAR INTO nG. IN THE SAME CONFIGURATION AS "C BAR. ®--4" PERFORA TED PVC SCH. 40 PIPE W/1 CF/LF OF GRAVEL WRAPPED IN FILTER FABRIC. GB RETAINING WALL W/2:1 WALL HT. Bn BLK. 12" BLK. 16" BLK. nA" BAR "B" BAR "Cn BAR 2'-8" 2'-8" --#4 @ 32" -- 4'-8" 4'-8" --#5 @ 16" -- 6'-8" 4'-0" 2 '-8" -#4@ 16" #6 @ 16" - 8'-8" 4'-0" 2'-0" 2'-8" #4 @ 16" #5 @ 16" #6@ 8" BACKFILL SCHEDULE "O" BAR "T" "L,, "on #4@ 16" 6" 1 '-7" 12" #4 @ 16" 6" 2 '-9" 12" #5 @ 16" 12" J'-9" 12" #6@ 16". 1 '-9" 5'-4" 16" 'W" 8" 8" 12" 12" "K" 7" 1 '-8" 2'-7" J'-4" + ~ 0 .., SPA ING P R SPACING P R TYP. SECTION TYP. SECTION T.F. . . ., ,4 VERTICAL STEEL INTO FOOTING, TYP. LAP 48 BAR DIAME:TERS WITH CONTINUOUS STEEL IN FOOTING, Tl£ WITH #2 Tl£ WIRE (TYP. BOTH SIDES OF STEP) STEPPED FOOTING DETAIL ALT. #1 N.T.S. NOTE: TIE WITH #2 TIE WIRE AT ALL LAPS ,------r------..---SPACING PER TYPICAL SECTION • (0 a:: Cl. 0~ • VI a:> ..J ~ ..J :::, io Lu tl :c T.F. vi~ I I '==i:;;::;=:1=~:::::;--t-T't:'"7 ~ ~ .4 #4 BARS HORIZ. STEPPED FOOTING DETAIL ALT. #2 N.T.S. SPECIFICATIONS CONCRE:TE: PORTLAND CEMENT PER ASTM C 150. f'c = 2000 PSI AT 28 DAYS IF SULFATE CONTENT IS NEGLIGIBLE, OTHERWISE FOLLOW TABLE 19-A-.3 OF UBC. CEMENT TYP[ PER SOILS [NGINE[R'S RECOMMENDATION. RE/NF. STEEL: DEFORMED BILLET STEEL BARS PER ASTM A 615 AS FOLLOWS: #4 OR SMALLER GRAD£ 40 #5 OR LARGER GRAD£ 60 CONCRE:TE BLOCK: f'm = 1500 PSI AT 28 DAYS. GRAD£ "N" HOLLOW UNIT BLOCK PER ASTM C 90, BLOCK TYPE, COLOR AND /OR ARCHITECTURAL FINISH PER LANDSCAPE PLANS "NO SPECIAL INSPECTION" MORTAR: TYPE "S" PER ASTM C 270 1 PART CEMENT 1 /2 PART LIME PUTTY 4 1/2 PARTS SAND GROUT: CONFORMING TO ASTM C 476 1 PART CEMENT .3 PARTS SANO 2 PARTS PEA GRAVEL NOTES 1. GROUT ALL CELLS SOLID. GROUT SHALL BE OF FLUID CONSISTENCY 2. ALL FOOTINGS SHALL BE POURED ON UNDISTURBED GROUND OR UNOISTURB[O [NGINEER[D COMPACTED FILL. .3. WALL SHALL BE LAID TRUE AND PLUMB. 4. PROVISIONS SHALL BE MADE FOR ADJOINING CONSTRUCTION. 5. ALL SPLICES SHALL BE 48 BAR DIAMETERS. 6. ALL CONSTRUCTION SHALL BE DONE IN ACCORDANCE WITH APPLICABLE SECTIONS OF TH [ 1994 UNIFORM BUILDING CODE AND A.C.I. STANDARDS .381-89. 7. ALL BARS SHALL BE BENT COLD. 8. CONTRACTOR SHALL VERIFY COMPATIBILITY OF DESIGN WITH EXISTING CONDITIONS PRIOR TO PLACEMENT OF FOOTING STEEL. 9. BACKFILL SHALL BE PER SOILS ENGINEER'S RECOMMENDATIONS. 10. SUBDRAIN SHALL BE 4" PERFORATED PVC SCH. 40 PIPE WITH 2" PVC OUTLET PIPE @ 10' O.C. MAXIMUM (THROUGH CELL NOT CONTAINING STEEL) PLACE 1 CF /LF OF GRAVEL WRAPPED IN FILTER FABRIC. 11. WATERPROOF BACK OF ALL THE RETAINING WALLS W/2 COATS OF ASPHALTIC EMULSION PER MANUFACTURE'$ SPECIFICATIONS. 12. BACKFILL/NG SHALL NOT BE PERMITTED UNTIL AT LEAST 7 DAYS AFTER THE WALLS ARE BUILT. 1.3. CONTROL JOINTS SHALL 8£ PLACED AT ALL ANGLE POINTS AND A MAXIMUM .32' O.C.