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International Concrete Abstracts Portal

Showing 1-5 of 13 Abstracts search results

Document: 

SP147-11

Date: 

September 1, 1994

Author(s):

H. Gallegos

Publication:

Symposium Papers

Volume:

147

Abstract:

Paper presents the state of the art of masonry design, construction, and supervision in Peru, a country subjected to severe seismicity. Masonry in Peru has always been the most important urban structural material, but one that had been used without any engineering control during design, construction, and supervision phases. The results were unsafe and/or wasteful. The information presented in this paper covers the following subjects: 1) design and construction practices, including materials, masonry walls, building configuration, codes and seismic design; 2) seismic behavior and retro fitting;and 3) research addressing materials, masonry specimens, and full-size walls and buildings. These concerns initiated an integral program 2 decades ago, with the main objective of rationalizing the structural and engineering treatment of masonry (until that time, merely a construction material).

DOI:

10.14359/4389

Document: 

SP147-10

Date: 

September 1, 1994

Author(s):

L. E. Garcia and L. E. Yamin

Publication:

Symposium Papers

Volume:

147

Abstract:

A review of the use of masonry in Columbia is presented. The importance of masonry construction is emphasized. The masonry structural systems prevalent in the country are discussed. A description of the materials employed in masonry construction in Columbia is given, including physical and mechanical properties. Reinforced masonry, confined masonry, unreinforced masonry, and nonstructural uses of masonry are discussed. Recent damaging Columbian earthquakes are presented. The behavior of masonry structures during these earthquakes, as well as their influence on the requirements of the Columbian Building Code, are given. The empirical design permitted by the code is indicated. Construction and inspection practice are briefly outlined. The procedures for evaluating and strengthening masonry structures are addressed. Past and current research on masonry is highlighted.

DOI:

10.14359/4388

Document: 

SP147-06

Date: 

September 1, 1994

Author(s):

M. Bruneau

Publication:

Symposium Papers

Volume:

147

Abstract:

Presents the Canadian practice for the design of earthquake-resistant masonry structures, problems germane to the existing unreinforced masonryinfrastructure never designed to resist earthquakes, and masonry-related earthquake-engineering research efforts in Canada. The evolution of Canadian masonry construction, size of the industry, building code and detailing requirements, design methods, materials, and allowable stresses are reviewed for both unreinforced and reinforced masonry. Examples of masonry buildings damaged during past Canadian earthquakes are presented. For the seismic evaluation of existing masonry structures in Canada, issues pertaining to building code, detailing, seismic retrofit ordinances, heritage buildings, and Eastern Canadian seismicity are formulated from a Canadian perspective. An overview of ongoing research activities initiated to tackle some of these issues, and a preliminary outline of some research findings and needs, are also presented.

DOI:

10.14359/4385

Document: 

SP147-05

Date: 

September 1, 1994

Author(s):

S. M. Alcocer and R. E. Klingner

Publication:

Symposium Papers

Volume:

147

Abstract:

An overview of different aspects of masonry research in the Americas is presented from the viewpoint of the response of masonry to extreme lateral forces such as earthquakes of strong winds. Research objectives, variables studied, and important findings are described. Due to the large number of investigations, the presentation is not intended to be exhaustive, and only the most relevant references are selected. With respect to the behavior of unreinforced and confined masonry, Latin American research is emphasized. With respect to the behavior of reinforced masonry, the U.S. TCCMAR program is emphasized. This chapter is organized into the following sections: material properties; unreinforced masonry; confined masonry; reinforced masonry; and masonry infills. To facilitate the transfer of research findings into design practice, design and construction details from several research projects conducted in different countries are described. Finally, needed research is discussed from an overall viewpoint.

DOI:

10.14359/4384

Document: 

SP147-12

Date: 

September 1, 1994

Author(s):

P. A. Hidalgo

Publication:

Symposium Papers

Volume:

147

Abstract:

The main characteristics of Chilean masonry construction are presented, including reinforced masonry and confined masonry. The seismic behavior of masonry is discussed, with special emphasis on the reasons for the poor performance of hollow clay brick reinforced masonry during the March 3, 1985 earthquake, compared with the rest of Chilean construction. The codes available for structural design are analyzed, including the development of the revised version of the seismic code to prevent damage in future earthquakes, and preparation of the draft for the design of confined masonry. Finally, the research done in Chile to develop the code provisions for the design of reinforced masonry structures is summarized.

DOI:

10.14359/4379

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