The cyclic tests of the columns are of practical relevance to the performance of compression members during earthquake loading. The strength, ductility and energy absorption capabilities of RC columns, subjected to cyclic loading, have been estimated by many researchers. These characteristics are not normally inherent in plain concrete but can be achieved by effectively confining columns throug...

BACKGROUND In 1962, Methods of Information in Medicine (MIM) began to publish papers on the methodology and scientific fundamentals of managing data, information, and knowledge in biomedicine and health care. Meeting an increasing demand for research about practical implementation of health information systems, the journal Applied Clinical Informatics (ACI) was launched in 2009. Both journals a...

ACI Materials Journal, V. 110, No. 5, September-October 2013. MS No. M-2012-079.R1 received January 14, 2013, and reviewed under Institute publication policies. Copyright © 2013, American Concrete Institute. All rights reserved, including the making of copies unless permission is obtained from the copyright proprietors. Pertinent discussion including author’s closure, if any, will be published ...

Rebar fracture in boundary elements of lightly reinforced shear walls in recent earthquake motivated research on the minimum longitudinal reinforcement applicable to shear walls. These researches lead to change in the ACI 318-19 requirement for minimum longitudinal reinforcement in boundary elements. New ACI 318 requirement increase minimum longitudinal reinforcement ratio for boundary elements...

cost optimization of the reinforced concrete cantilever soil retaining wall of a given height satisfying some structural and geotechnical design constraints is performed utilizing harmony search and improved harmony search algorithms. the objective function considered is the cost of the structure, and design is based on aci 318-05. this function is minimized subjected to design constraints. a n...

ACI Structural Journal, V. 110, No. 4, July-August 2013. MS No. S-2011-235.R2 received February 1, 2012, and reviewed under Institute publication policies. Copyright © 2013, American Concrete Institute. All rights reserved, including the making of copies unless permission is obtained from the copyright proprietors. Pertinent discussion including author’s closure, if any, will be published in th...

The seismic safety levels provided by the three most recent editions of ACI and ASCE regulations for new moment frame structures are determined. Five special RC frames having 3, 5, 10, 15, 20 stories designed separately based on 318-99, 318-05, 318-11, associated UBC 97, 7-05, 7-10. A suit 10 consistent earthquake records is selected non-linear dynamic analysis buildings. Incremental conducted,...