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S'TRUCTURAL®` <br />~jGROUP <br />Pt•oposalNo, 1096A6 <br />March 25, 2010 <br />AECOM Transportation <br />Mr. Gregory W. Heffner, PE <br />999 W. Town & Country Road <br />Ot•ange, CA 92868 <br />Los AngeiDS Dlvtsion <br />15552 Commerce Lane <br />Huntington Beach, CA 82849 <br />phone 71A•a81-90x0 <br />Fax 714-597.0183 <br />Wwwstruclurel.net <br />Structural Group, Inc. <br />CA License H:776932 <br />Re: Fiesta Marketplace Parking Sh'ucture-Post Tension Inspection and Repair <br />Dear Mr. Heffner: <br />Thank you for giving Stnictural Group, Inc. (SG) the opportunity to prepare a repair proposal for the <br />post tension cables at the Fiesta Marketplace Parking structure. The post tension appears to be in <br />good condition with the exception of several exposed tendons in each garage. In order to prepare for <br />larger repair project we propose a plan to investigate the condition of the exposed cable while at the <br />same time providing a solution to the concerns about water penetration and future damage to the <br />cables. In accordance with this we propose to furnish all necessary labor, material, equipment and <br />supervision except as noted below to perform the following items of work; <br />1, Mobilize to job site <br />2. Layout repair areas I-5 (as shown in attached photos I-5). <br />3. Saw-cut approx % inch deep around patches. <br />Q. Chip-ottt repair area to expose cables and provide keyway, <br />5. Inspect exposed cables for condition and tension. <br />6. Provide stamped engineers report on cable condition. <br />7, Re-seal damaged tendon sheathing per PTI specification (see image 6). <br />8. Prep concrete surface for topping, <br />9. Install high strength concrete repair material to provide min I inch cover for cables. <br />If deemed necessary from inspection of the cables and engineering analysis of the existing capacity of <br />the stt•Ltettu~e we also propose to re-tension existing broken cables as follows: <br />I. Locate quarter point of cable profile. <br />2. Expose cable at this point. <br />3, Install cable coupler per PTI specifications with splice of new cable length. <br />4. [king "Z" anchor, re-tension cable to required pressuro within open slab location. <br />5, i3siug high strength concrete repair mortar pour back open patch. <br />ATLANTA s DALTIMORa • BATON ROUOE • DIRMINOHAM. CHICA00 • CiNOINNATI • DALLAS • DENYaR • DETROIT • PT LAUDERDALE • OREEN BAY • HARTFORD • HOUSTON <br />KANSAS CITY • LAKE CNARLEe, LA• LOS ANOELE9 • NEW YORK • PHILADELPHIA • PHOENIX • PITT89UROH • SALY LAKE CITY • WABNINOTON, OC • WEST FLORIDA <br />A Slrnctural Group Company <br />