Title:
Changes to and Applications of Development and Lap Splice Length Provisions for Bars in Tension (ACI 318-89)
Author(s):
Leroy A. Lutz, S. Ali Mirza, and Narendra K. Gosain
Publication:
Structural Journal
Volume:
90
Issue:
4
Appears on pages(s):
393-406
Keywords:
anchorage (structural); bond (concrete to reinforcement); bonding; building codes; deformed reinforcement; development length; splicing; lap connections; reinforced concrete; reinforcing steels; structural design; tension; Design
DOI:
10.14359/3980
Date:
7/1/1993
Abstract:
Changes made to the development length provisions to consider confinement effects are examined. The reasons why bars with small cover and with close spacing require longer development and splice lengths are presented. The elimination of the Class C splice is also addressed. Changes in the top bar effect and the introduction of factors for epoxy-coated reinforcing bars are discussed. Sample problems illustrate usage of the new provisions.