Selection of renovation actions using multi-criteria "knapsack" model

In recent years, many new technological solutions have been introduced, aiming to improve the ability of buildings to satisfy a variety of needs of human beings and the environment. As a consequence, designing an optimal building has become more challenging than it has been before. In this article, a multi-criteria “knapsack” model is proposed to help designers to select the most feasible renovation actions in the conceptual phase of a renovation project. Firstly, the methodology is described. Then, a case study is presented. Finally, advantages and disadvantages of the methodology are considered and needs for future research are suggested.