Prefabricated House Demolition Plan

The prefabricated house demolition plan should cover five parts: project overview, preliminary preparations, construction steps, safety measures, and compensation and resettlement. Details are as follows:

I. Project Overview It is necessary to clarify the demolition location, scale, building structure type (such as assembled reinforced concrete prefabricated panel structures), construction year, and reasons for demolition (such as house aging, safety hazards, or urban renewal). For example, one project involves 12 prefabricated residential buildings constructed between 1980 and 2000, with a total building area of approximately 8,600 square meters; another project is a five-story prefabricated house with a footprint of 1,000 square meters and a total building area of 5,000 square meters. Demolition targets must meet one of three criteria:

1. Structural Safety Category: Identified as Grade D dilapidated buildings (e.g., wall cracks > 1mm, foundation settlement > 5cm), or seismic performance below 70% of current standards;
2. Planning Adjustment Category: Included within the red line of municipal engineering projects (such as rail transit construction), or non-harmonious buildings located outside historical and cultural districts;
3. Comprehensive Assessment Category: Buildings aged 40 years or more with a structural aging index > 0.65, or those with a fire safety facility deficiency rate > 80% and renovation costs exceeding 50% of replacement costs.

II. Preliminary Preparations

1. House Safety Appraisal: Commission a Class A inspection agency to conduct testing in accordance with the 'Reliability Appraisal Standard for Civil Buildings' to determine the safety grade and emergency measures;
2. Personnel and Materials: Establish a professional team equipped with tools such as electric drills and gas cutters, as well as protective gear like safety helmets and dust masks;
3. Mechanical Equipment and Site: Erect scaffolding, prepare excavators and cranes, clear the site, and set up fences and warning signs;
4. Pipeline Handling: Cut off the main water, electricity, and gas networks, and mechanically cut and seal indoor pipelines;
5. Material Stacking and Debugging: Designate areas for waste and recyclable materials, and ensure equipment passes third-party inspection before use.

III. Construction Steps

1. Door and Window Removal: Prioritize removal to facilitate subsequent operations;
2. Wall Demolition: Use gas cutters to cut exterior wall prefabricated panels, protect structural columns and beams in interior walls, and provide temporary supports for retained walls;
3. Floor Demolition: Remove surface tiles, drill holes, and inject sodium silicate solution to weaken the concrete, then separate and hoist to the lower level; free-falling is strictly prohibited;
4. Stair and Roof Demolition: Remove handrails, treads, and color steel plate roofs in sequence;
5. Cleaning and Restoration: Sort and stack waste, and level the site for subsequent construction.

IV. Safety Measures

1. Personnel Safety: Wear protective gear and use safety harnesses for high-altitude work;
2. Equipment Safety: Regularly inspect mechanical equipment and ensure operators are certified;
3. Environmental Protection: Sort and dispose of waste, and implement dust control measures to reduce dust.

V. Compensation and Resettlement Provide four options: monetary compensation, property rights exchange, housing vouchers, or original-site reconstruction. Clarify the relocation and demolition process, and provide temporary housing or rental subsidies for residents without housing.