five methods of single facility location:

single facility location refers to the independent selection of a new facility location, and its operation is not affected by the existing facility network of the enterprise. In some cases, the new facilities to be located are part of the existing facilities network. For example, a catering company wants to open a new restaurant, but the restaurant is operated independently from other existing restaurants. This situation can also be regarded as a single facility location. The location of a single facility can be divided into the following methods:

1. Load-distance method

The goal of the load-distance method is to select a target scheme among several candidate schemes, which can minimize the moving distance of the total load (goods, people or others). When the proximity to the market and other factors are crucial, this method can quickly screen out the most attractive scheme from many candidate schemes. This method can also be used in facility layout.

2. factor scoring method

factor scoring method is probably the most widely used among the common site selection methods, because it integrates various factors in a simple and easy-to-understand mode. When using this factor scoring method, we should pay attention to it: in the process of using factor scoring method, we can feel that because the determination of weight and grade score depends entirely on people's subjective judgment, as long as there is an error in judgment, it will affect the scoring value and finally affect the possibility of decision-making. There are many methods to determine the weight, and the more objective and accurate method is analytic hierarchy process, which is not complicated in operation and has a strict scientific basis. We recommend that analytic hierarchy process be used as much as possible in multi-scheme and multi-factor evaluation.

3. Profit and loss analysis

Profit and loss analysis is a basic method of plant location, also known as comparative analysis of production costs. This method is based on the following assumptions: all options available can meet the basic requirements of site selection, but the investment of each option is different, and the variable costs of raw materials, fuel and power are different after commissioning. At this time, the principle of break-even analysis can be used to compare the production cost after production.

4. location measurement method

location measurement method is a method to support facility location considering both quantitative and qualitative factors.

5. barycenter method

barycenter method is a method of arranging individual facilities, which takes into account the distance between existing facilities and the quantity of goods to be transported. It is often used in the selection of intermediate warehouses. In the simplest case, this method assumes that the incoming and outgoing costs are equal, and it does not take into account the special transportation costs added under the condition of not being fully loaded.