Integral House Prefabricated Component Drawing

The integral house prefabricated component drawing involves various types of components and design drawing methods, as detailed below:

I. Common Types of Prefabricated Components

The assembled monolithic concrete structural system includes various prefabricated parts, which can be classified into the following categories based on their functions:

1. Structural Components: Such as prefabricated concrete columns, beams, and shear walls, which form the main load-bearing system of the building. Among them, composite beams enhance overall load-bearing performance by combining prefabricated sections with cast-in-place layers; shear walls achieve seismic resistance through connections between prefabricated walls and post-cast concrete.
2. Enclosure and Partition Components: Including prefabricated exterior walls, interior wall panels, and parapets. Exterior wall panels must meet integrated requirements for thermal insulation, waterproofing, and decoration, often employing an external wall panel system that achieves coordinated work with the main structure through node connections.
3. Floor and Balcony Components: Composite floor slabs consist of a prefabricated base plate and a cast-in-place layer, balancing construction efficiency with structural integrity; prefabricated balconies are reliably connected to the main structure through embedded parts to ensure safety during use.
4. Stair and Ancillary Components: Prefabricated stairs can be standardized for production, reducing on-site wet work; ancillary components such as air conditioning panels and enclosure structures are customized according to functional requirements, with air conditioning panels requiring reserved openings for piping.

II. Design Drawing Methods

Design institutes are gradually transitioning from traditional CAD drawing to BIM technology, enabling automated output of two-dimensional drawings from three-dimensional models and enhancing design precision and collaborative efficiency. Specifically for prefabricated components, the drawing process is divided into two stages:

1. Simplified Component Design: Used for conventional plan and elevation drawings in project models, focusing on expressing component outlines, dimensions, and basic connection relationships, suitable for preliminary design stages.
2. Detailed Component Design: Addressing construction needs, detailed information is added to simplified components, such as bolt sleeve positions, air conditioning reserved hole sizes, and embedded part types. Detailed design requires the generation of elevation details, section details, and embedded part location drawings to guide factory processing and on-site installation.

III. Key Design Specifications

Prefabricated component design must adhere to specifications such as the "Technical Standard for Assembled Concrete Buildings" (GB/T 51231), with a focus on controlling the following aspects:

• Connection Nodes: Ensuring reliable connections between prefabricated components and cast-in-place parts, as well as between prefabricated components themselves, using techniques such as grout anchor connections and sleeve grouting connections.
• Embedded Part Positioning: Verifying embedded part positions through BIM models to avoid conflicts with reinforcing bars and piping.
• Waterproofing and Thermal Insulation: Exterior wall panels require drainage features, with thermal insulation layers integrated with structural layers to prevent thermal bridges.

Through systematic component classification and refined design drawing methods, the integral house prefabricated component drawing can effectively guide factory production and on-site construction, promoting the development of building industrialization.