La misura FUZZY della vulnerabilità di manufatti stradali e ferroviari in c.a.

The paper outlines a possible approach to the problem of predicting the vulnerability of bridge structure due to multiple deterioration factors. As such, the evaluation of an existing bridge is based on a highly subjective procedure. The purpose of this paper is to describe a fuzzy mathematical ap-proach that can be used to evaluation bridge condition. The procedure is based on visual bridge in-spection. Fuzzy Sets Theory (FST) are used to represent the engineer's judgement on the gravity of observed damage and their relation to bridge safety