en Facilities Design & or Work Space Design Facilities Design & or Work Space Design پژوهشي Research <p>This paper offers an approach that could be useful for diverse types of layout problems or even area allocation problems. By this approach there is no need to large number of discrete variables and only by few continues variables large-scale layout problems could be solved in polynomial time. This is resulted from dividing area into discrete and continuous dimensions. Also defining decision variables as starting and finishing point of departments in area makes it possible to model layout problem so. This paper also provides new technique that models basic constraints of layout problems.</p> <p><img alt="AWT IMAGE" src="./files/site1/images/6(1).png" style="width: 250px; height: 250px;" ></p> Location, Facility layout problem, Large-scale optimization, Mathematical programming, area allocation 247 257 http://ijiepr.iust.ac.ir/browse.php?a_code=A-10-39-1&slc_lang=en&sid=1 Amin Vahidi amin.vahidi@gmail.com 180031947532846003533 180031947532846003533 No Iran University of Science & Technology Alireza Aliahmadi pe@iust.ac.ir 180031947532846003534 180031947532846003534 Yes Iran University of Science & Technology Mohammad Reza Hamidi hamidi.ie@gmail.com 180031947532846003535 180031947532846003535 No Iran University of Science & Technology Ehsan Jahani ejahani@ind.iust.ac.ir 180031947532846003536 180031947532846003536 No Iran University of Science & Technology