Subcontractors scheduling on residential buildings construction sites

Erecting a residential construction is a complex project which implies many actors and strong deadline requirements. The aim of this paper is to present a case study about schedules of subcontractor’s tasks on residential buildings. Directly after the end of structural works, start not only tasks like electricity, plumbing, cover, water circuit installation, but also paintings, furniture, wallpapers, etc. which are often executed by subcontractors. Solving this problem consists in finding for each elementary task its starting date, its ending date and its volume executed each day between these two dates. A constraint programming based solution is presented in this paper.