Installation of the Top Feed Inlet for Construction Waste Chutes

The top feed inlet is the opening through which waste is loaded into the chute; its design and installation directly affect ease of use and dust/splash control. This article details the top feed inlet installation.

1. Feed Inlet Types
2. Floor-side Feeding

• Chute runs along the exterior wall
• Loading opening on each floor from window or balcony
• Connects to the main chute via a side feed-in section
• Most common type

2. Top Platform Feeding

• Feed platform provided at the top of the chute
• Load from the top-floor platform
• 90° turn into the vertical chute
• Suitable for segmented feeding in super high-rise buildings

3. In-Elevator-Shaft Feeding

• Chute inside the elevator shaft
• Load from the elevator shaft doorway on each floor
• Provide feed inlet door
• Commonly used for indoor works

1. Side Feed-in Section Installation
2. Opening

• Cut a loading opening on the side of the main chute
• Size: 300×400mm
• Opening located near the floor elevation

2. Install the Feed-in Section

• Feed-in section with door frame
• Fix at the opening with bolts or adhesive
• Provide sealing ring to prevent leakage

3. Install the Movable Door

• Door connected with hinges
• Rubber strip sealed on the inner side of the door
• Door opening angle ≥180°
• Door fitted with latch (prevent wind from blowing open)

4. Connect to Floor

• Feed inlet distance from floor platform ≤300mm
• Workers stand on the platform to load
• Provide temporary steps (if required)

III. Feed Inlet Height

• Distance from finished floor: 500–800 mm
• Convenient for workers to load
• Too low causes waste splash-out
• Too high makes loading laborious

1. Feed Inlet Protection
2. Movable Door

• Close after loading
• Prevent dust and splash
• Prevent accidental entry

2. Observation Window

• Observation window on door (optional)
• Observe inside the chute
• Determine if there is blockage

3. Protective Mesh

• Provide protective mesh above the feed inlet
• Prevent accidents from large waste
• Prevent tools from falling in

4. Grating

• Provide grating inside the feed inlet
• Block oversized pieces
• Prevent blockage

1. Number of Feed Inlets

• At least 1 feed inlet per floor
• 2 inlets if standard floor area >3000m²
• Feed inlet spacing ≤30 m

1. Feed Inlet Signs

• Apply sign "Construction Waste Feed Inlet"
• Apply warning "Caution: Falling Objects"
• Apply operating instructions
• Apply reflective signs at night

VII. Common Problems

1. Poor door sealing: replace sealing strip
2. Inlet too high: provide steps
3. Blockage: provide grating to block large pieces
4. Dust: close door + spray

VIII. Longkang Feed Inlet Products

1. Standard side feed-in section
2. With movable door and observation window
3. Sealing strip
4. Protective mesh
5. Customizable sizes