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WA9302-CS 951005 (2) " SHIMEK, JACOBS & FINKLEA CONSULTING ENGINEERS 8333 Douglas Avenue, #820 Dallas, Texas 75225 (214) 361-7900 ROSS L ~^COBS, ei. October 5, 1995 RONALD XZ CONWAY, RE. JOHN W. BIRKHOFF, PE. JOE R, CARTER, PE. GARY C. HENDRICKS, PE. C. L. SHIMEK, PE. I. C. FINKLEA, PE. lAMES E. LAUGHLIN, Larry Davis Construction Inspector P.O. Box 478 Coppell, Texas 75019-4409 Re: Village Parkway Ground Storage Reservoir No. 2 Pier Elevations Dear Mr. Davis: At your request, a field survey was conducted on October 3, 1995, to verify the elevations of ten random piers. The following are the results of the survey: Pier Number Plan Elevation (ft) [ Field Elevation (ft) Difference In Elevation (ft) D 13 451.58 451.00 0.58 D15 451.58 450.98 0.60 G15 451.58 451.00 0.58 G 19 451.58 450.97 0.61 J19 451.58 451.01 0.57 N12 451.58 450.99 0.59 N 19 451.58 451.02 0.56 P18 451.58 450.99 0.59 Q12 451.58 451.05 0.53 S 14 451.58 450.98 0.60 In discussions with Robert Barbarisi of Natgun, he stated that the difference in elevation between the plan elevations (451.58 feet) and the field elevations will be eliminated when the floor slab of the tank is poured and connected to the piers. Our structural engineer stated that contractors typically leave the piers 5 to 6 inches short and that the connection to the piers will generally be wider at the connection. The top of the pier must be cleaned and free from all debris before the connection is made. We have requested revised shop drawings from Natgun that will detail the connection between the floor slab of the tank and the piers at their field elevations. The revised drawings will be forwarded to you upon review. Enclosed is a pier layout map with the location of the piers that were surveyed. We are available to discuss this further at your convenience. Sincerely, Matt Hickey, E.I.T. '~ Enclosure cc: Howard Pafford CONCRETE REINFORCED o · · PIERS- 119 TON CAPACITY · · 334 REQ'D TOTAL o o o o I o o o SEE NOTES J O O O O O O O O EL. 442.33 O O 0 0 0 0 0 0-. 0 ~ 0 0 --- OUTL~ ENO~EMENT 0 o o o o o o o o o 0 o o o o o o o o o o o o o o o o o o O O O O O O O O O O O O O O O O O O,, OUTLET ENCASEM o ~ o o o o o o o o o olo o o o o o 0 o o 0 0 0 0 0 0 0 0 0 0 6 0 0 0 0 0 0 0 0 0 0 ~ 0 O~ EL. 442,33~ I o I } 0 0 0 0 0 0 0 0 0 0 0 0 0 0 o o o o o o o o olo ·, TOP OF PIER EL~ATION o o o o o o o o o o JS 451,~8 UNLESS OTHE~ISE NOTED o o o o I o o o -- EL. ~8.~ -- EL, 445,50 ' 'The Information contained ha'Sin b the Ixoperty of Nitgun Corporation, end nil) rot NOTES: be duplr4ted, in whole or In pad, uled foi' other ~lm Intlmll revbw purpomes, or dim- 1. REFER TO GEOTECHNICAL REPORT FOR PIER REQUIREMENTS. dosed to othmr., wtmout the pdor expremm written permmmmbn of Nmtgun Corporltion," 2. FOR PiPE LOCATION AND ORIENTATION SEE DWG. 1.25. NATGUN CORPORATION B,O IVIG WATER BTIgRAGiEE IREBERVC31FI P_,C)PFtB_L, TE)<A8 TOP OF PIER ELEVATIONS .. ~ r=~--IVl~. JAC(gB8 & FJ,,I<LF_A DALL-A8, 'I'EEXA8 mr,~um !'~rTB mmo. t Z.O dC)B No, 19r:~l'l my 6/'? ~m 7/L:M/B5 BI-IEET ,4 CIF'F'~ I