Using backup coverage and TOPSIS fuzzy approach to emergency facilities layout in new development planning area

New development planning areas, like new towns and new communities, usually ignore the layout of location for emergency facilities, like police station, hospital and fire station, beforehand. Such remissness is harmful to people´s life and property. We adopt the ideal of backup coverage to expand the BACOP1 model to the BACOP1-m model with m+1 objectives in the 0-1 integer programming model to analyze the emergency facilities layout of a new development planning area. In the process of analysis, the TOPSIS multiobjective programming approach was suggested to obtain non inferior solutions. Finally, a case study for fire station layout in Tanhai new town is shown. Five alternatives, including different amounts and layouts were obtained by using the different weights for objectives. The results can prove the usefulness of the model and provide a basis for the evaluating process