This document discusses post-tensioning in building construction. It provides examples of post-tensioned buildings like Daniel Burnham Court in San Francisco and Red Lion Inn, both constructed using unbonded post-tensioning. It also lists advantages of post-tensioning such as longer clear spans, thinner slabs, and improved seismic performance. Finally, it discusses unbonded post-tensioning systems and their components.

1. Post-Tensioning
in
Building Construction

2. Examples of Post-
Tensioned Building
Construction

3. Constructed with Unbonded Post-Tensioning
Daniel Burnham Court, San Francisco

4. CONSTRUCTED
WITH
UNBONDED
POST-
TENSIONING
Red Lion Inn

5. EXAMPLES OF POST-TENSIONING
PARKING STRUCTURES
La Palma Center, La Palma, California
Xerox Center,
Santa Ana, California
Lakeshore Tower, Irvine,
California

6. Constructed with Unbonded Post-Tensioning
University of California Medical Center, Irvine

7. CONSTRUCTED
WITH
UNBONDED POST TENSIONING
San Jose International Airport

8. POST-TENSIONED CONSTRUCTION
WITH UNBONDED TENDON
Cal-State Northridge C.I.P. Parking Structure

9. POST-TENSIONED CONCRETE FLOOR
SUPPORTING STEEL FRAME OFFICE BUILDING
Hybrid Construction

10. BASE PLATES FOR COLUMNS TERMINATING
ON PT SLAB

11. POST-TENSIONED HYPRID CONSTRUCTION
Irwin Plaza, San Rafael, California

12. VIEW OF THE PARKING LEVEL OF A HYPRID CONSTRTUCTION
Irwin Plaza, San Rafael, California

13. POST-TENSIONED MAT FOUNDATION
Fortaleza, Brazil

14. POST-TENSIONED MAT FOUNDATION
Kodak Building, San Jose

15. POST-TENSIONED GROUND SUPPORTED SLAB
READY FOR CONCRETE POUR

16. UNITED STATES
POST-TENSIONING STEEL TONNAGE
1999 STATISTICS
Buildings 33 %
Bridges 17 %
Ground supported slabs 43 %
Earthwork 6%
Miscellaneous 1 %
____________________________________
Total 100%

17. ADVANTAGES OF POST-TENSIONING
• Longer clear spans
• Thinner slabs
• Lesser floor-to-floor heights
• Shorter building height
• Lesser weight
• Improved seismic performance
• Faster construction cycle

18. Post-Tensioning
• System
• Unbonded
• Grouted (Bonded)

19. ARRANGEMENT OF UNBONDED POST-TENSIONING SYSTEM

20. COMPONENTS OF A GENERIC 12 mm (1/2 in.) STRAND TENDON

21. HARDWARE FOR CORROSIVE ENVIRONMENT

22. ASSEMBLED ANCHOR DEVICE FOR CORROSIVE ENVIRONMENT

23. LIVE (STRESSING) ENDS AT SLAB EDGE

24. UNBONDED POST-TENSIONING CONSTRUCTION
High Rise
Building
3rd Street
San Francisco

25. UNBONDED POST-TENSIONING CONSTRUCTION
Red Lion Inn Hotel
Modesto, California