Production planning in prefabrication plant

The production planning process in prefabrication plant involves the following decisions: what elements should be produced, on which facilities and when. The planning should be performed in such a manner that the costs dependent on these decisions will be at a minimum. A distinction is made here between short and long production series. The first involves specific orders, and the other a continuous demand for standard elements. The paper is arranged in the following fashion. Firstly, some general principles of production planning are discussed with reference to a series of similar elements produced on a single mould. This case is later expanded to production of different types of elements in large series, produced on one or several moulds. Finally, the most general case, that of all types of series, long and short, produced on a system of several moulds, is explored. The main features of an information system within which the production planning takes place are also presented.