Julio A. Ramirez
Analysis, design, and construction of prestressed concrete structures. Prerequisite: CEE 452.
This course covers basic understanding of the behavior of prestressed concrete and the design of statically determinate and indeterminate prestressed concrete structures. Throughout the course, actual material properties are used in problems throughout the course and practical fabrication/construction issues are considered. Prestressing is also introduced as another load on the structure ("Equivalent Load Concept"). Estimates for loss of prestress are discussed. Design of simple beams for flexure and shear -- as well as service load performance (deflections and stress control) is covered. Composite behavior and design of precast beams and one-way post-tensioned slabs are addressed.
Student learning goals
To understand the use of superposition in getting stresses from prestressing combined with loads as well as the equivalent load concept for design of prestressed concrete structures.
To understand and apply the concepts of loss of prestress due to various sources for pretensioned and post-tensioned members.
To design a simple-span prestressed beam for flexure and shear. Show how prestressed beams are designed to meet limit stresses under service load and provide sufficient strength at ultimate.
To understand and apply the concepts of estimating short and long-term deflections, including the effects of cracking, in prestressed beams.
To understand and estimate the effects of restraints in continuos prestressed concrete members.
To design of continuous one-way post-tensioned slab.
General method of instruction
Although a textbook is not required for this course, lecture notes will be supplemented with at least two resources:
1. ACI 318-05, "Building Code Requirements for Structural Concrete," American Concrete Institute.
2. PCI Design Handbook, Prestressed Concrete Institute, Precast and Prestressed Concrete, 6th Ed (recommended design aid, we will try to obtain free of charge).
Concepts of calculus and differential equations; computer programming, data manipulation, statistical analysis, numerical calculation, and reinforced concrete design principles are needed for success in this course. Structural design concepts, approaches, procedures, and codes are are also needed. Background on the determination of loads (dead, live, etc) is also needed.
Class assignments and grading
Homework design problems will be assigned regularly and solutions provided after grade is assigned. Grading will be typically on a 10 point scale.
Homework 35%, Midterm Exam 30%; and Comprehensive Final Exam (as scheduled), 35%.