Facility Maintenance Traceability Information Coding in BIM-Based Facility Repair Platform

Table 1

Common coding method.

Coding	Description
Sequence codes	Sequence codes, also known as serial codes, are a continuous data system. They are given a serial code according to the sequence of the number. It is simple and convenient to coding, but it cannot be classified. Thus, it is difficult to produce management benefits.
Block codes	Objects are classified in blocks, and the same block of data uses the same code, which can distinguish a block of materials with the similar characteristics. Block coding requires classification of data characteristics in a tree hierarchy (for example, three layers which are large, medium, and small), and each layer uses continuous coding.
Group classification codes	According to the characteristics of the object, it is coded in an individual or segment, and different codes are given to distinguish different types.
Numeric coding with the specific meaning	The digits of the code represent the physical characteristics such as the size or strength of the coded object.
Ideogram coding	The coded object is represented by specific and meaningful words or numbers.
Mixed coding	A mixture of the above coding methods.