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Home My WebLink AboutReso 1974-7308 RESOLUTION NO. 7308 RESOLUTION OF THE CITY COUNCIL OF THE CITY OF CHULA VISTA ACCEPTING PROPOSAL OF SOILS ENGINEER FOR CITY LIBRARY AND APPROPRIATION OF FUNDS The City Council of the City of Chula vista does hereby resolve as follows: WHEREAS, Section 9 of that certain agreement dated January 22, 1974 with Richard George Wheeler & Associates for the design and construction of a City Library facility provides that the City agrees to furnish soils analysis and foundation reconmen- dations, and WHEREAS, the architect has recommended that the City retain the firm of Benton Engineering, Inc. to do said analysis and foundation investigation, and WHEREAS, it is necessary that this work be completed as soon as possible to provide necessary information to the structural engineer for completion of his work, and WHEREAS, over and above those items set forth in the proposal of Benton Engineering, Inc. costing $1987, it is possible that unforeseen conditions will necessitate additional tests and, therefore, the Director of Public Works requests that the City Council appropriate and authorize the expenditure of an amount not to exceed $3000 for said soils engineer fees. NOW, THEREFORE, BE IT RESOLVED that the City Council of the City of Chula vista does hereby accept the proposal of Benton Engineering, Inc., a copy of which is attached hereto and incor- porated herein by reference as if set forth in full. BE IT FURTHER RESOLVED that the sum of $3000 is hereby appropriated from the unappropriated reserves of Federal Revenue Sharing Funds and authorized to be expended for the purpose of soils engineer fees. Presented by ~~~-. Lane F. Cole, Director of Public Works Approved as to fokmAY $ / Y \-./:~~ r~,/ ,/\ _--"';' - / ,\ _-- ",() y-~........-?,/,. , -- ,____/ -- J:......-:::>Z-.....,. L/' ;--'--:__~ ,,(.;..-<.::7 - '~^J</_.-' , '; .-/ ... c;/ ,:('/ . George D. Lindberg, City Attorney ADOPTED AND APPROVED BY THE CITY COUNCIL OF THE CITY OF CHULA VISTA, CALIFO~~IA, this 21st day of May 1974, by the following vote, to wit: AYES: Councilmen Hyde, Egdahl, Hobel, Hamilton NAYES: Counci lmen None ABSENT: Councilmen Scott ABSTAIN: Councilmen None ~Jt.~J!;-,;S, Mayor of the City of Chura Vista ATTEs~<?/??';a ~l i~J-Ar - City Clerk STATE OF CALIFORNIA COUNTY OF SAN DIEGO ss. CITY OF CHULA VISTA I, JENNIE M. FULASZ, City Clerk of the City of Chula Vista, Cal~fornia, DO HEREBY CERTIFY that the above and foregoing is a full, true and correct copy of and that the same has not been amended or repealed. DATED: ci ty Clerk fSEALi -i? fJB BENTON ENGINEE t<ING, INC APPLIED SOIL ME(;~IAt<I''':S F.';'li',L,A! llH'S 671'; c..ONV,)'... Lul.,f./, SAN DIEGO, CA!....Il-,'~HNllI. 9;'11: PHILIP HENKING BENTON PRESIDENT _ CIVIL ENGINEER May 9, 1974 ,,""~H.-'NL ,/14) bfi5-l955 City of Chula Vista Department of Public Works P. O. Box 1087 Chula Vista, California 92012 Attention: Mr. Lane Cole Director of Pub I i c Works Subject: Proposal for Soils Investigation Chula Vista Library North of "F" Street Between Fourth Avenue and Garrett Avenue Chula Vista, CoI ifornia Dear Mr. Cole: This is to present a proposal for a soils investigation to be conducted at the proposed Chula Vista Library site located northerly of "F" Street between Fourth Avenue and Garrett Avenue in the City of Chula Vista, Cal ifornia. It is understood that the major portion of the presently proposed building will consist of one-story structure over a bosement. The building will be of Type II construction with anticipated column loads varying from 100 kips for the one story portion to 225 kips for the two story portion. The anticipated loads on the continuous type of footing will vary from 3 kips per lineal foot for the one story portion to 8 kips per lineal foot for the two story portion. In order to bring the site to the proposed finished grades, compacted filled ground up to 3 feet in thickness and excavation up to 9 feet in height will be required. The future addition will be two staries in height. It is proposed to drill six borings, four of which will be drilled to a depth of 25 feet in the proposed basement areas. The remaining two borings will be drilled to a depth of 15 feet below existing ground surface in the non-basement area of the presently proposed building. The soils encountered in the borings will be logged by our field engineer, and undisturbed samples will be taken at intervals of 3 to 5 feet, where possible, in the various soil types to the depths of exploration. The samples will be obtained by driving a special steel sampling tube, lined with 12 one inch high by 2.42 inch inside diameter brass cylindrical liners into the soils ahead of drilling. The sampler will be extracted from the baring with the soil still confined within the brass liners. A six inch section of the center portion of the sample will be taken for laboratory tests in close fitting waterproof containers in order to retain the field moisture until completion of the tests. ~-!A5 "J - City of Chulo Visto Chula Vista Library -2- May 9, 1974 Laboratory tests will be performed on all of the undisturbed samples taken from the test borings to determine the field moisture, density and shearing strength. Load consol idation tests will be performed on representative samples of the soils taken below the proposed foatings and fill. Also, tests will be performed on any expansive soils encountered to determine their volumetric change characteristics with change in moisture content. The representative soils which are suitable to be used as filled ground will be tested by the A.S.T .M. D 1557-70 method of compaction that uses 25 blows of a 10 pound rammer falling from a height of 18 inches on each of 5 layer soils in a 1/30 cubic foot compaction cyl inder. Samples will then be remolded to 90 percent of maximum dry density and tested by direct shear, load consol idation and expansion tests to determine the allowoble bearing capacity and to deter- mine which soils ore suitable for use within the upper 2 to 3 feet below finished grade. The field and laboratory test data, and our conclusions and recommendations will be presented in a finol report. Recommendations will include those for site grading, foundation design, construction, floar slob support and both active and passive earth pressure for retaining wall design. The engineering charges for this investigation will be based on our standard hourly rates plus the cOst of drilling. The estimated total charges for the investigation are presented os follows: 4 to 5 Hourly Estimated Rote Total Charges $20.00 $ 320 to $ 340 $18.00 $ 288 to $ 432 $14.50 $ 116 to $ 145 $25.00 $ 250 to $ 300 $35.00 $ 140 to $ 175 Subtota I $1114 to $1392 Engineering Chorges Estimated Hours Field location, logging and sampling of borings Laboratory test i ng Drafting Office Engineering, including preparation of report by Registered Civil Engineer Review by Principal Engineer 16 to 17 16 to 24 8 to 10 10 to 12 Drilling Charges (at cost) Drill Rig Rental 16 to 17 $35.00 $ 560 to $ 595 $1674 to $1987 Estimated Totals As stated, the above estimated total costs are based on our present estimates of the numbers of hours that will be required for each of the various elements of the investigation. Actual condi- tions encountered may require some modifications, so that the actual final charges may be some- what more or somewhat less. In any case, no increase above $2000. will be undertaken without your prior consent and authorization. BENTON ENGINEERfNG INC ~. 1! 1500 City of Chulo Vista Chula Vista Library -3- May 9, 1974 With our present schedule of drill ing, it is anticipated that the field work could be initiated between 1 to 2 weeks after authorization to proceed is received by us. If you should have any questions concerning the above, or if you should desire any additional information, please contact us. Very truly yours, BENTON ENGINEERING, INC. ~/';: /. '/ ~--S =fr-nu By ~;!0,-~} ~J\,,~_ Philip H. Be~n, Civil Engineer Distr: (3) Addressee (1) Richard George Wheeler, A.I.A. and Associ ates B€rjTO~~ EI'IGll'ii:.F.:RlrLC. .~~G. 71Y(