Advanced Prestressed Concrete Design

CE 69700

Credit Hours

3

Instructor

Julio Ramirez

Learning Objectives

By the end of Module 1, you will be able to:

  • Compare and contrast the use of standard materials for prestressing applications.
  • Apply the concepts in representing the effects of prestressing through the use of an equivalent external load system including the forces at the anchorages.
  • Recall goals and phases of design, codes, standards, and handbooks, use of prestressed concrete in the built environment. Discuss details and applications of post-tensioned concrete.
  • Apply design code requirements from fabrication to service load, and strength in flexure and shear in post-tensioned concrete bonded and unbonded structures.
  • Analyze the effects of prestressing statically indeterminate structures.

By the end of Module 2, you will be able to:

  • Compare and contrast the design of pretensioned and post-tensioned one-way flexural members.
  • Apply the concepts needed to calculate mechanical losses to obtain the initial force distribution in post-tensioned members.
  • Apply the concepts needed to estimate immediate and long-term losses in post-tensioned unbonded members using the Simplified Method.
  • Apply the concepts needed to estimate immediate and long-term losses in post-tensioned unbonded members using the Incremental time-step method
  • Use guides, codes, and the fundamental concepts of estimation of losses, evaluation of restraints from prestressing statically indeterminate structures and apply these concepts and methods with the design of statically indeterminate post-tensioned one-way structures.

By the end of Module 3, you will be able to:

  • Compare and contrast the design of post-tensioned two-way flexural members.
  • Apply the concepts of load balancing and the apply the equivalent frame method to the analysis and design of post-tensioned two-way flexural members and use the guidelines for durability against corrosion of post-tensioning steel systems.
  • Use guides, codes, and the fundamental concepts of estimation of losses, evaluation of restraints from prestressing statically indeterminate structures and apply these concepts and methods with the design of statically indeterminate post-tensioned two-way slab floor systems.

Description

This course has been developed in three modules.

Module 1 - Introduction to Design of Prestressed Concrete Overview (5 weeks)

This module integrates science and engineering principles to design prestressed concrete members and structural systems. The application of scientific and engineering knowledge is demonstrated in solving problems associated with the design of post-tensioned floor slab systems bonded and unbonded one-way and two-way also composite and non-composite for superimposed loads.

Design of post-tensioned one-way and two-way slab floors, beams, and frames are exercised using current building code requirements to provide experience in realistic design practice.

Module 2 - Design of Continuous Prestressed Concrete One-Way Members (Beams and Frames) Overview (5 weeks)

Module 2 focuses on design of continuous post-tensioned concrete one-way beams, slabs and frames. This module integrates science and engineering principles to design prestressed concrete beams, one- way and two slabs, and columns. These include determination of strength, detailing of reinforcement, and service load considerations such as crack control and deflections.

Module 3 - Design of Post-tensioned Unbonded Two-Way Slabs and Other Special Topics Overview (4 weeks)

Module 3 focuses on two-way slab post-tensioned construction.

The following subjects will be used to solve engineering problems throughout the course:

  • calculus and differential equations
  • data manipulation
  • statistical analysis
  • the strength of materials
  • structural mechanics

Web Address

https://purdue.brightspace.com/d2l/login

Web Content

Syllabus, grades, lecture notes, homework assignments, solutions and quizzes

Grading

This course will be graded based on the following criteria:

Assessment Type % of Final Grade
Homework 50%
Exams 50%

Grading Scale/Grade Ranges

A+ = 95-100% A = 90-94% A- = 85-89% F < 44%
B+ = 80-84% B = 75-79% B- = 70-74%  
C+ = 65-69% C = 64-60% C- = 55-59%  
D+ = 50-54% D = 45-49% D- = 40-44%  

Textbooks

Official textbook information is now listed in the Schedule of Classes. NOTE: Textbook information is subject to be changed at any time at the discretion of the faculty member. If you have questions or concerns please contact the academic department.

Recommended Reading Texts and Articles

  • Time-Step Estimates of Prestress Force (423.10R-16—Guide to Estimating Prestress Losses)
  • Zia, P.; Preston, H. K.; Scott, N. L.; and Workman, E. B., 1979, “Estimating Prestress Losses”, Concrete International, V. 1, No. 6, June, pp. 32-38.
  • CE 57200 Losses Lecture Notes
  • Reinforced Concrete: Mechanics and Design (8th Edition); James K. Wight; Pearson.
  • Structural Analysis (9th Edition) Russell C. Hibbeler; Pearson.
  • PTI Design Handbook, Post-Tensioning Institute, Phoenix, AZ.

Additional Tools/Technologies

  • Working knowledge of basic software such as MathCad, Excel, or similar.
    • MathCad Prime (free for students)
    • Microsoft Excel (MS Office is free for students)
    • Word Processor (i.e., MS Word)
  • Brightspace learning management system.
    • Access the course via Purdue’s Brightspace learning management system.