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This
add-in accepts as data: a list of departments, the physical
sizes of departments, part flows between departments, material
handling costs between departments and the size of a proposed
facility. The program tries to find the layout of the departments
within the facility that minimizes the total cost of material
handling. Two different algorithms are provided, the traditional
CRAFT layout procedure and a procedure that finds the optimum
sequence of departments in sequential layout. Both are heuristic
procedures that do not necessarily find the optimum.
A graphical presentation of the layout, as shown above, allows
the designer to experiment with alternatives.
Two pages have been added to the earlier
versions of this description. The first describes how to model
a layout problem with a Quadratic Assignment model. The second
allies more powerful combinatorial search techniques to the
optimization of a sequential layout.
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