Corrigendum: Layout and size optimization of sewer networks by hybridizing the GHCA model with heuristic algorithms (Scientia Iranica (2015) 22: 5 (1742-1754))

Abstract

The authors regret that the affliation of the third author (R. Moeini) has been printed incorrectly as "Department of Civil Engineering, Faculty of Engineering, Isfahan University, Isfahan, Postal Cod: 81746-73441, Iran." and should be corrected as "Department of Civil Engineering, Faculty of Engineering, University of Isfahan, Isfahan, Postal Code: 81746-73441, Iran." The authors would like to appologize for any inconvenience caused. The main objective in the design of the sewer network problems is minimization of the construction and operation cost. The sewer network optimization problem can be divided in two problems of selection the network layout and sizing of network, determining the pipe diameters and slopes, for selected layout. These two problems, however, are not independent and should be handled simultaneously. © 2015 Sharif University of Technology. All rights reserved.