SENSITIVITY ANALYSIS ON SELECTED COLLAPSED BUILDING STRUCTURES IN ANAMBRA STATE

Abstract

This study is on the sensitivity analysis of collapsed building structures, studied were carried out using five (5) different sites of collapsed building in Anambra state as a case study. Many researches has evaluated the causes of building failures using different approaches including the probabilistic methods of analysis, but the sensitivity method of analyzing the causes of collapsed indices has not been evaluated. The sensitivity indices approach tends to show the severity classification of the z component of resolution, in terms of the indices being low, moderate and high. The application of sensitivity model gives the Z components of the resolution to make sound engineering judgment by linking directly the major causes of collapse. Five numbers of collapsed multi storey sites were studied and destructive and non destructive tests were carried out. Nine grouped indices were studied; the structural element, which includes Design cause, foundation cause, quality control cause, Engagement of quacks , detailing and specification causes and procedural causes . From the experimental study it was deduced that the sensitivity of the reinforcement detail is moderate, the sensitivity of construction method is high; it was also observed that the sensitivity of the foundation type is high; the sensitivity of using quacks is high. The sensitivity of Development control cause is high. The sensitivity of quality control is moderate. The, the sensitivity of detailing and specification is low. The sensitivity of construction cause is moderate.

 

KEYWORDS: Buildings, Causes, Collapsed, Sensitivity and Test