Title:
An Innovative Use of Post-Tensioning
Author(s):
D. Stanton Korista and Mark P. Sarkisian
Publication:
Concrete International
Volume:
18
Issue:
4
Appears on pages(s):
29-33
Keywords:
deflection; high-rise buildings; load-balancing methods; post-tensioning; strength; serviceability; Design
DOI:
Date:
4/1/1996
Abstract:
Use of post-tensioning in building frames in a new method of transferring gravity loads and controlling building behavior. Managing gravity loads to resist building uplift is a specific need in the construction of very tall structures. Load balancing was used within exterior building frames to transfer column loads as well as to control short- and long-term deflections of exterior frames. Relatively shallow exterior spandrels, required for the exterior lateral system tube were post-tensioned, eliminating the need for large transfer girders or walls which would not be architecturally acceptable. Post-tensioning was performed on a floor-by-floor basis without the need for staged prestressing.