Title:
Longitudinal Steel Lmits for Concrete Columns
Author(s):
Chien-Hung Lin and Richard W. Furlong
Publication:
Structural Journal
Volume:
92
Issue:
3
Appears on pages(s):
282-287
Keywords:
columns (supports); cracking (fracturing); creep properties; reinforced concrete; reinforcing steels; shrinkage; stresses; Structural Research
DOI:
10.14359/1129
Date:
5/1/1995
Abstract:
The current ACI Building Code contains rules that limit the amount of longitudinal reinforcement for reinforced concrete columns. Neither the lower bound nor the upper bound values are associated with a rational derivation. The rational upper limit can be calculated based on steel congestion in the column; it also can be determined based on resistance to cracking of concrete. The lower bound can be derived as the replacement of the effective tension area of concrete to control cracking; it can also be derived based on shrinkage and creep of concrete to control steel stress under service loads.