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Volume 50 (1999), issue 4

Characteristic planning models for products and production programs in furniture manufacturing

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The paper presents the research on the possibilities of applying models of planning and monitoring a product and the production programs in furniture manufacturing. The research was done in four firms that produce and sell furniture, enabling a survey of the products that meet the requirements of the desired objectives. The research target of the research was to establish the models for planning the products from  certain production programs on the one hand, and planning of the whole production programs on the other, all to determine which models could be applied in the course of managing a furniture manufacturing firm. The curves of the product life cycle in the particular firms are illustrated in a single diagram for all the products of the same production program. The sale of each product within a production program is presented through models with data on the quantities sold and the values realised. Based on the structures of three firms, the length, width and average length of their production programs were calculated. The models showed that the length of 42.7 products was calculated; the average width of 3.3. products; and the average length within the production program of 12.8 products. With one firm whose data on the total production program were surveyed, a model for monitoring the proportion of new products in the production program was established. This has been done as a proportion of the number of new products, the quantity sold of new products and the proportion of the realized value of the new products in the production program per year. The calculated values of the new product ratio within the whole production program prove that there is a large proportion of new products during the initial period of a firm's development, while the values ofthe new product ratio have been going down during the last monitored period. As to the stored stocks, the sales efficiency coefficients related to the produced quantities of the two production programs within a single firm are listed. The efficiency coefficients provide poor results ranging from 19.3 to 56.9. Based on the preceding research of my Master's thesis, the proportion of the revenues and profits of the individual products in the production program has been confirmed in each phase of their life cycle. The research has shown that the highest values of revenues and profits have been obtained in the phase of maturity, while the phases of introduction and recession were similar. By using a data survey on the production programs of two firms, a model for establishing the age of a particular program per year has been made. It was thus found that one firm had a production program ranging from 1 to 2.75 years, another between 1 and 7 years. The dependence of the value realized and the quantity sold has been estimated. This revealed that with one firm there were differences between these two parameters, with another no differences could befound. With all the research and methods used in achieving the results, the paper ends with the models for planning the product and the production programs. They are theoretical and made for the furniture manufacturing of the monitored firms. Based on this, two characteristic models were then made to be used in furniture manufacturing in making their business decisions.


Faculty of Forestry and Wood Technology

DRVNA INDUSTRIJA Scientific Journal of Wood Technology

ISSN 0012-6772 (Print) / ISSN 1847-1153 (Online)

Faculty of Forestry and Wood Technology University of Zagreb, Svetošimunska 25, 10000 Zagreb, Hrvatska - Croatia
Tel: +3851 2352 430, E-mail:
Editor-in-Chief: Prof. Ružica Beljo-Lučić, Ph.D. E-mail: