COURSE SYLLABUS
UNBONDED POST-TENSIONING
Course Description:
This course is designed to provide the Iron Worker student with training in unbonded post-tensioning systems including single-strand tendons, encapsulated systems, and barrier cable systems. The course covers principles and theories, system components safety practices, tools and equipment, unloading, handling, storage, installation, stressing, and finishing for all types of single-strand unbonded post-tensioning systems.
Course Objective:
The objective of this course is to enable a student to safely install and stress monostrand (single-strand unbonded) post-tensioned reinforcing systems.
Learning Outcomes:
Upon successful completion of this course, the student will be able to:
· Apply the principles and theories of post-tensioning and be able to identify the components of monostrand tendon systems and barrier cable systems.
· Use the tools, equipment and procedures to safely unload, handle, layout, install, stress, grout and finish each type of post-tensioning system; including systems used in aggressive and non-aggressive environments.
· Apply proper procedures for detensioning and performing lift-offs on post-tensioning systems.
· Troubleshoot and repair post-tensioning systems and equipment on the job.
· Install and stress post-tensioned barrier cable systems.
Target Audience:
This course is designed for apprentices and journeymen.
Length of Course:
This course is designed to be offered during a total of 45 hours – 35 hours of classroom instruction and 10 hours of hands-on lab or shop training. It is recommended that classroom and hands-on lab or shop sessions be combined where appropriate. For example, the instructor may spend 90 minutes in lecture in the classroom followed by 90 minutes in the lab or shop. This means the course may consist of 15 3-hour sessions. When appropriate, more class sessions may be held for shorter periods of time in order to provide the student with sufficient opportunities to learn the content.
Course sessions may be conducted during evenings in blocks of 3 or 4 hours or may be conducted during all day sessions. Given the time required for students to master these skills, it is recommended that all day courses include classroom sessions of no more than a 3 to 4-hour block in the morning and a 3 to 4-hour block in the afternoon.
Lab or shop sessions may be scheduled for as little time as 1 hour and may be as long as 6 hours (with breaks).
Location of the Course:
All course sessions will be held at the facilities used by the local union. Lab or shop activities may be held in an inside work area and/or may be held in an outside work area.
Instructor Information:
The instructor for this course is a journeyman Iron Worker with experience working with unbonded post-tensioning systems in reinforced concrete, who is able to perform all of the skills and who has been trained as an instructor.
Course Materials:
· Unbonded Post-tensioning Reference Manual
· Unbonded Post-tensioning Student Workbook and Drawings
· Unbonded Post-tensioning Instructor Guide (for instructors only)
· Unbonded Post-tensioning Instructor DVD (for instructors only)
· Assignment Sheets (in the Student Workbook)
· Job Sheets (in the Student Workbook)
· Tests (in the Instructor Guide)
A Word about Safety
The importance of safety will be addressed and reinforced in all hands-on activities in the classroom, in the shop, and on the job site.
Course Assignments:
There will be assignments and students will complete these assignment sheets prior to and/or during course sessions as determined by the instructor. Job skills will be completed as part of appropriate units. Most job skills will be completed in the lab or shop area and/or outside in a work area.
Course Grading Criteria:
To successfully complete this course, the student must complete all of the assignment sheets, demonstrate the required skills in the lab or shop and pass the knowledge tests.
Course Attendance:
All course sessions are mandatory and while missed time can be made up, missing a course session will affect your ability to successfully complete this course. Speak with the instructor to arrange make-up time if necessary.
Course Schedule:
NOTE: The following Course Schedule is set up for blocks or classes 3 hours in length. If your course sessions are more or less than 3 hours, you will need to adjust the number of sessions accordingly.
Date Topics/Activities
Session 1 Introductions
Review of the course syllabus including the course objectives
Discussion of classroom and outside assignments
Principles and theories of post-tensioning
Lecture and discussion
Session 2 Test - Principles and theories of post-tensioning
Components of a monostrand post-tensioning system
Components of stressing equipment
Lecture and discussion
Session 3 Test - Components of a monostrand post-tensioning system
Test - Components of stressing equipment
Installation hand tools and equipment
Lecture and discussion
Session 4 Test – Installation hand tools and equipment
Document control, unloading and handling
Lecture and discussion
Session 5 Test – Document control, unloading and handling
Installing monostrand post-tensioned floor systems
Lecture and discussion
Session 6 Installing monostrand unbonded post-tensioned floor systems
Skills demonstrations, apprentices practice and skills testing
Session 7 Test - Installing monostrand post-tensioned floor systems
Preparing of monostrand tendons prior to stressing
Stressing of monostrand tendons
Lecture and discussion
Session 8 Test – Preparation of monostrand tendons prior to stressing
Stressing of monostrand tendons
Skills demonstrations, apprentices practice and skills testing
Session 9 Test - Stressing of monostrand tendons
Detensioning and lift off of monostrand tendons
Lecture and discussion
Skills demonstrations, apprentices practice and skills testing
Session 10 Test - Detensioning and lift off of monostrand tendons
Troubleshooting of monostrand tendons and stressing equipment
Lecture and discussion
Skills demonstrations, apprentices practice and skills testing
Session 11 Test – Troubleshooting of monostrand tendons and stressing equipment
Finishing off monostrand tendon tails
Lecture and discussion
Skills demonstrations, apprentices practice and skills testing
Session 12 Test - Finishing off monostrand tendon tails
Components of encapsulating systems
Lecture and discussion
Session 13 Test - Components of encapsulating systems
Installing barrier cables
Post-tensioned slabs-on-ground
Lecture and discussion
Skills demonstrations, apprentices practice and skills testing
Session 14 Test – Installing barrier cables
Test – Post-tensioned slabs-on-ground
Reading post-tensioned field placement drawings
Lecture and discussion
Session 15 Skills demonstrations, apprentices practice and skills testing
Test - Reading post-tensioning field placement drawings
Course summary