4.Conclusions
The dynamic facility layout problem is the problem of assigning departments to the predetermined locations on the plant floor for multiple periods to minimize material handling and rearrangement
costs. Nowadays, we encounters with shortage of lands to build factory, so we use of several floor. In this paper, we proposed a mixed integer programming formulation for static and dynamic multi
floor facility layout problem. For future research, it is proposed to consider input/output points location in designing facility layout problem.