Codes for Prefabricated Building Components
The codes for prefabricated building components are typically represented by the initials of their pinyin abbreviations, with specific coding rules for different components. Here is a detailed explanation of the codes and meanings of common prefabricated components:
The code for prefabricated exterior walls is YWQ. For example, YWQ1 represents the first numbered prefabricated exterior wall. This code specifies that the component type is an exterior wall and is prefabricated, with the number used to distinguish different components within the same project, facilitating construction management and quality control.
The code for prefabricated interior walls is YNQ. For instance, YNQ5a represents a prefabricated concrete interior wall panel in a project that is identical to the already numbered YNQ5 except for the position of the electrical outlet box. The suffix 'a' is used to identify minor differences from the reference component (YNQ5), typically involving local adjustments such as the position of the electrical outlet box or reserved holes.
The codes for prefabricated composite beams are divided into two categories: DL represents ordinary prefabricated composite beams, such as DL1 representing the first numbered component; DLL represents prefabricated composite coupling beams, such as DLL3 representing the third numbered coupling beam. Composite beams combine prefabricated and cast-in-place sections to enhance structural integrity, with the codes distinguishing between the functional differences of ordinary beams and coupling beams.
The codes for composite floor slabs are subdivided based on their usage location: DLB for composite floor slabs, DWB for composite roof slabs, and DXB for composite cantilever slabs. For example, DLB3 indicates that the floor slab is a composite slab with a sequence number of 3. These codes clarify the component's purpose through initial letter combinations, avoiding confusion during construction.
The codes for prefabricated stairs combine type and parameters: ST represents double-run stairs, and JT represents scissor stairs. For example, ST-28-25 indicates that the prefabricated reinforced concrete slab-type stairs are double-run stairs with a floor height of 2800mm and a stairwell net width of 2500mm. The numerical parameters in the code are key design dimensions directly related to the accuracy of construction and installation.
Among the codes for prefabricated balcony slabs, air conditioning slabs, and parapets, YKTB represents prefabricated air conditioning slabs, such as YKTB2 representing the second numbered air conditioning slab. These component codes are typically designed by combining function and location, facilitating quick identification of the component's purpose.
The code for hollow slabs is KB, derived from the initials of 'Kong Ban' (hollow slab) in pinyin, referring to prefabricated concrete floor slabs with circular holes in the middle. This code is concise and directly reflects the structural characteristics of the component.
The code for prefabricated slabs is YB, where Y represents 'prefabricated' and B represents 'slab', applicable to general prefabricated slab components with unspecified specific uses. The code design follows the logic of 'function + type', facilitating expansion to the naming of other prefabricated components.
