SLP is a procedure developed by Muther [1]. It involves
eleven steps and is able to find a number of solutions for the
layout. Chien [5] categorized the eleven steps of SLP into four
parts that are data input, procedure’s process, output results
and evaluation process. He also modified SLP to use this
procedure for different shapes and hexagons. By using this
modified SLP, departments can be divided into sub
departments. Additionally, SLP is a powerful approach and at
the same time is easy to use [6]. Ermin et al. [7] developed the
overall factory layout in spite of limitation in size, position
and unit relationship. Improving the plant layout using SLP
method will decrease the material flow considerably [8].