26.1 - Introduction
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Practice Questions
Test your understanding with targeted questions
What is the main purpose of using prestressed concrete?
💡 Hint: Think about the advantages over traditional methods.
Name the two methods of prestressing concrete.
💡 Hint: One involves tensioning before the concrete is set.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary purpose of prestressed concrete?
💡 Hint: Look for benefits of construction methods.
True or False: Posttensioning occurs before the concrete is poured.
💡 Hint: Consider the order of operations.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A simply supported beam is prestressed using a tendon that introduces a 120 ksi initial stress. After considering creep and shrinkage, what is the effective stress left in the steel if the losses amount to 20 ksi?
💡 Hint: Identify the initial stress and subtract the specified losses.
Compare the performance of a 30 feet R/C beam with 5 inches of deflection to a P/C beam subjected to the same load. Assuming the P/C design reduces deflection by 50%. What would the new deflection of the P/C beam be?
💡 Hint: Calculate based on the reduction percentage given.
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