NEHRP Clearinghouse

Title
Engineering Report on the Managua Earthquake of 23 December 1972.
File
PB293557.pdf
Author(s)
Sozen, M. A.; Matthiesen, R. B.
Source
National Science Foundation, Washington, DC. Applied Science and Research Applications., January 1975, 122 p.
Abstract
This report summarizes the results of an inspection of the earthquake disaster at Managua, Nicaragua on December 23, 1972 by the Committee on Natural Disasters of the Commission on Sociotechnical Systems of the National Research Council. As an introduction and as background information, an abstract of a presentation on the seismicity of Nicaragua is included. Strong-motion measurements of the earthquake and a general description of structural damage constitute the major portion of this report. The latter is subdivided into a summary, an introduction which includes a description of geology and soils, seismic history, the actual event, immediate social effects, structural history, and structural damage distribution. Another sub-section on impressions of structural damage discusses design vs. non-design, shear walls vs. frames, vital services, interaction of structural and non-structural elements, and emergency exits. Approximately one-half of the report consists of full-page photographs showing scenes of Nicaragua, before and after the earthquake, and maps depicting seismicity, accelerograms, and response spectra comparisons.
Keywords
Seismic design; Damage assessment; Geology; Nicaragua; Managua (Nicaragua); Seismic waves; Soil classification; Seismic risk; Buildings; Earthquake engineering; Soil structure interactions; Earthquakes; Dynamic structural analysis