Drawings of Prefabricated Building Components

Drawings of prefabricated building components are crucial technical documents that guide the production, installation, and construction of prefabricated components, covering various component types and detailed drawing interpretation points.

Types of Prefabricated Components

Common prefabricated components include exterior wall components, bay windows, air conditioning panels, etc. Less common ones include prefabricated load-bearing walls, columns, and beams. Additionally, there are composite floor slabs, double-skin walls, balcony slabs, stairs, etc. These components are prefabricated in factories and assembled on-site, improving construction efficiency and quality.

Key Points for Interpreting Prefabricated Component Drawings

• Shape and Dimensions: Attention should be paid to the shape, notch dimensions, and overall dimensions of the components to ensure they meet design requirements. For example, prefabricated walls should be observed from different angles, such as top view, front elevation, and left view, to determine if they are special-shaped walls with tongue-and-groove joints, whether they have openings or inner and outer leaf panels, and to identify information such as the height of the prefabricated section and the height of the mortar bed.
• Water and Electricity Reservations and Reinforcement: The positions for water and electricity reservations should be accurate, and the reinforcement detail drawings should clearly show the arrangement of steel bars to ensure the load-bearing capacity and durability of the components. Local enlarged illustrations and explanation areas can aid in understanding the design intent.
• Lifting and Positioning: The positioning dimensions of lifting rings, lifting arrows, truss positioning dimensions, etc., should be clearly specified to ensure safe and precise lifting of the components. Details such as reinforcement for openings and spray-coded arrows should also be noted to avoid construction errors.

Drawing Sharing and Detail Enhancement

By utilizing detailed and simplified components, detailed drawings of prefabricated exterior wall components, such as elevation details and section details, can be produced to showcase the component structure and connection methods in detail. The positioning drawing of embedded parts should include a statistical table of metal embedded parts for diagonal bracing, installation details, and a statistical table of prefabricated exterior walls to ensure accurate positioning of embedded parts. The vertical numbering drawing of prefabricated components generated from simplified components can assist in on-site construction management.

Examples of Related Drawings

The structural construction drawings of an 8-story prefabricated assembled residential building include elevation drawings, plan drawings, C-C section drawings, distribution drawings of prefabricated slabs on each floor, and distribution drawings of each elevation, etc. These drawings showcase the layout and connection methods of prefabricated components from different angles, providing comprehensive guidance for construction. For example, the distribution drawing of prefabricated slabs on each floor can clearly display the types and quantities of prefabricated slabs on each floor, facilitating material procurement and construction scheduling.