Gradingof risk parameters for façade maintainability

Abstract

Maximum facade performance with minimum life cycle cost of cleaning. repair. replacement and downtime can be achieved at the 'optimum maintainability' of facade in spite of various Ii sk fac tors. A condition stuvey of 450 tall buildings of Singapore and a detailed assessment of funher 120 of them identified 22 significant risk factors under four major groupings of design. construction. maintenance and environment. These risk factors were quantified and used as inputs for an mtificial nemal network (ANN) model to develop a maintainability scoring system (MSS) as a predictwe indication of vatious design, constmction and maintenance options for both traditional and modern facades.