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Full-Text Articles in Architecture

Optimization Of Two-Way Post-Tensioned Concrete Floor Systems, Gaelyn B. Krauser Oct 2009

Optimization Of Two-Way Post-Tensioned Concrete Floor Systems, Gaelyn B. Krauser

Master's Theses and Project Reports

This thesis investigates a parametric study of a flat plate floor system designed using post-tensioning. The load balanced by the post-tensioning, the slab depth, and the strength of concrete were varied to create the parametric study of a hotel/condominium grid layout. In order to perform the parametric study, research was conducted on the development of post-tensioning, methods of analysis for two-way slab design, and post-tensioning methods of analysis. Design was conducted by hand through a series of Excel spreadsheets and compared to results found using the computer analysis program, ADAPT-PT. The designs found in the parametric study were then ...


Seismic Performance Of Unreinforced Masonry Walls Retrofitted With Post-Tensioning Tendons, Daniel Louis Lazzarini Jun 2009

Seismic Performance Of Unreinforced Masonry Walls Retrofitted With Post-Tensioning Tendons, Daniel Louis Lazzarini

Master's Theses and Project Reports

Unreinforced masonry (URM) structures have historically been regarded as structurally unsound in response to seismic events. The tendency for URM walls to collapse out-of-plane in a brittle manner is continually cause for concern. Retrofit of these walls is necessary in order to prevent severe damage and injury to occupants.

This paper is concerned with the retrofit of unreinforced masonry (URM) walls in response to out-of-plane loading. A retrofit design was developed and verified through structural testing. The selected retrofit technique incorporates vertical coring of URM walls to allow for the insertion of a single post-tensioning (PT) tendon. Tendons are spaced ...