Optimizing ways of repairing matched roofs

Abstract

The created methods and the logical scheme of an alternative selection based on it, allow for the adoption of decisions that optimally satisfy the technical parameters of roof repairs and the financial possibilities of a builder in each concrete case. It is here suggested that one selects a rational version of the roof repairs in a step-by-step way by assessing the alternatives with the help of multi-criteria decision methods (i.e. Topsis and Promethee). Each stage has pre-selected assessment criteria, decision methods and a formulated database. The initial stages include the following steps: an assessment of the roof's state following prepared methods, a definition of a tentative price of the work and a preliminary selection of the alternatives. The next stage includes an analysis of the possibilities to equip an extra garret-floor, as an alternative for repairs of the existing roof. If such a decision does not satisfy the pre-set conditions then we pass on to the following stage, which is a selection of the optimal way to repair the roof.