How to Remove Prefabricated Panels of a House

Removing prefabricated panels of a house requires careful operation, a detailed plan, and adherence to safety regulations. The specific steps are as follows:

1. Develop a Demolition Plan

Based on the size, location, and connection method of the prefabricated panels with the surrounding structures, as well as the overall structural characteristics of the house, develop a detailed demolition plan. Clarify the demolition sequence (e.g., progressing from the edges to the center), required tools (electric hammers, cutting machines, crowbars, etc.), personnel assignments, and emergency plans. For example, if the prefabricated panels are connected to the walls via steel bars, prioritize planning the cutting sequence of the steel bars to avoid accidental damage to the walls during demolition.

2. Sever Connecting Structures

Before demolition, thoroughly sever the connection points between the prefabricated panels and the surrounding structures, including steel bars, bolts, or concrete adhesive layers. Use angle grinders or gas cutting equipment to cut exposed steel bars. If the steel bars are embedded in the walls, first chisel away the surrounding concrete to expose the steel bars before cutting. For bolt connections, use wrenches or pneumatic tools to loosen and remove the bolts. This step must ensure that all connection points are completely separated to prevent the prefabricated panels from suddenly falling off during demolition, which could pose a danger.

3. Use Professional Tools for Breaking

Use electric hammers or hydraulic breakers to locally break the prefabricated panels, starting with openings at the edges of the panels or near the connection points and gradually expanding the breaking range. For large-area prefabricated panels, use cutting machines to divide them into smaller pieces along preset routes, reducing the difficulty of demolition. During operation, control the force of the tools to avoid excessive vibration causing damage to adjacent structures (such as floors, beams, and columns). For example, when demolishing floor prefabricated panels, prevent cracks from appearing in the floors below due to vibration.

4. Gradual Demolition and Cleanup

Demolish the prefabricated panels area by area according to the plan, and remove the broken pieces using crowbars or lifting equipment. During demolition, continuously observe the condition of the surrounding structures. If abnormalities such as wall cracks or exposed steel bars are found, immediately stop the operation and adjust the plan. The debris after demolition should be promptly cleaned up and sorted for stacking (e.g., recycling steel bars and concentrating the disposal of concrete fragments) to avoid occupying space or causing secondary pollution.

5. Safety and Environmental Protection Measures

• Safety Protection: Operators must wear safety helmets, dust masks, goggles, and anti-slip gloves. When working at heights, they must wear safety harnesses.
• Dust Control: Before demolition, spray water to moisten the prefabricated panels. During demolition, continuously spray water to reduce dust or set up mobile dust removal equipment.
• Structural Inspection: After demolition, inspect whether the load-bearing structures of the house (such as beams, columns, and floors) are damaged, focusing on observing cracks, deformations, or steel bar corrosion.
• Repair Treatment: Repair the demolished areas, such as filling holes with high-strength concrete and adding steel bars to reinforce weak areas to ensure structural safety.