Seite - 1272 - in Book of Full Papers - Symposium Hydro Engineering

Fig. 3 Example of a 3d model for a control structure (a regulator with a navigation lock) Exemple de modèle 3D pour une structure de contrôle (un régulateur avec un verrou de navigation) 5.2. DEFINE CRITERIA FOR DECISION MAKING The criteria for the decision making are those objectives and constraints that should be considered while looking for the best solution for the problem. There were two types of criteria in this study. The first criteria type included those affecting prioritising of the structure to have the remedy action over other structures. Alternatively, these criteria were named priority factors. They were estimated by the means of an expert system that converted the collected data quantitatively or qualitatively into an arithmetic score. 20 factors were defined expressing the importance of the hydraulic structure (8 factors) and the performance condition of it (12 factors). Each of these factors has been given a standard scale for scoring. As an example, the first factor is called "Hydraulic structure entity"; and it is related to the classification of the structure accordingly to its location on the waterway and its controlling role. The scale for scoring is as shown in figure 4. The 20 criteria are shown in Figure 5. Scoring system 1 2 3 4 5 Intermediate and Spillway (small) Intermediate Regulator Head Regulator (small) Head Regulator (large) Main Barrage (Nile River) Fig. 4 Scale for scoring system of the criterion "hydraulic structure entity" Échelle du système de notation du critère "entité de structure hydraulique" 1272