The project Wrigley Field’s 1060 project included construction of a new club house and administrative oces requiring foundations for support. The challenge Both Case Foundation and Hayward Baker completed the work as a joint venture in challenging winter weather conditions. The solution Case installed 63 belled caissons with smooth wall corrugated liner. Shafts ranged from 3 to 4.5ft in diameter and bells ranged from 7.5 to 13ft in diameter. Drill depth was approximately 63ft below working Wrigley Field Plazagrade. Case Foundation also installed 11 dewatering pumps. The secant wall installation included 258 secant piles around the north end of the plaza building that tied into the bracing on the south side of the building that Hayward Baker installed. Secant shafts were 1,180 millimetres

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