1. A twelve-story condominium is planned for construction on the Gulf Coast. The foundation for the building is to be friction piles (no end bearing). A prestressed concrete fabrication facility is within 30 miles of the project (i.e. use square prestressed concrete piles). If the bottom floor interior column loads are 500 tons and pile groups are not to exceed eight, determine the cross- sectional dimensions and length of piles required to support the interior column loads using a factor of safety of 3. Assume the piles have a center-to-center spacing such that the group efficiency is 1.0. (i.e. disregard whether or not the pile group acts as a block). NO cross-sectional dimension should exceed 24 inches. The piles are fully embedded in sand for which y = 118 lb/ft’, '= 32° and &' = 0.75¢* You need to fill in your answers in the table below. Include applicable units. Do not work the problem on this page. Type of pile to be used (i.e. material) Allowable load for pile group based on problem statement Number of piles you have selected to be used for each interior column
1. A twelve-story condominium is planned for construction on the Gulf Coast. The foundation for the building is to be friction piles (no end bearing). A prestressed concrete fabrication facility is within 30 miles of the project (i.e. use square prestressed concrete piles). If the bottom floor interior column loads are 500 tons and pile groups are not to exceed eight, determine the cross- sectional dimensions and length of piles required to support the interior column loads using a factor of safety of 3. Assume the piles have a center-to-center spacing such that the group efficiency is 1.0. (i.e. disregard whether or not the pile group acts as a block). NO cross-sectional dimension should exceed 24 inches. The piles are fully embedded in sand for which y = 118 lb/ft’, '= 32° and &' = 0.75¢* You need to fill in your answers in the table below. Include applicable units. Do not work the problem on this page. Type of pile to be used (i.e. material) Allowable load for pile group based on problem statement Number of piles you have selected to be used for each interior column
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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