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In construction, a “trap” refers to a plumbing device used to prevent the passage of sewer gas, odors, and vermin from the drainage system into occupied spaces. Traps are commonly installed beneath sinks, showers, bathtubs, and floor drains, creating a water seal that blocks the entry of gases and pests while allowing wastewater to flow freely through the drainage system. Properly installed traps are essential for ensuring the health, safety, and comfort of occupants in residential, commercial, and industrial buildings.

Function

The primary function of a trap in construction is to:

  • Prevent Sewer Gas: Traps prevent the passage of sewer gas, odors, and vermin from the drainage system into occupied spaces by creating a water seal that blocks their entry while allowing wastewater to flow freely.
  • Protect Occupant Health: Traps protect the health and safety of occupants by preventing exposure to harmful gases, bacteria, and pests that can cause illness, infection , or discomfort.
  • Ensure Plumbing Efficiency: Traps ensure the efficiency and effectiveness of the plumbing system by creating a barrier that prevents the loss of water from the drainage system and maintains the proper functioning of fixtures, appliances, and piping.

Installation

The installation of a trap typically involves the following steps:

  1. Select Type: Select the appropriate type of trap for the specific fixture or appliance being installed, considering factors such as size, shape, material, and code requirements.
  2. Position: Position the trap beneath the fixture or appliance, ensuring it is properly aligned, level, and securely connected to the drainage system.
  3. Connect Pipes: Connect the trap to the drainage system using appropriate pipes, fittings, and connectors, ensuring a watertight seal and proper alignment to prevent leaks and blockages.
  4. Test: Test the trap to ensure it is functioning correctly, filling it with water to create the necessary seal and checking for leaks, blockages, or other issues that could compromise its effectiveness.
  5. Secure: Secure the trap in place using appropriate fasteners, clamps, or straps, ensuring it is stable, secure, and properly supported to withstand the weight and movement of the fixture or appliance.

Applications

Traps are used in various construction applications, including:

  • Residential Construction: Traps are used in residential construction for single-family homes, multi-family dwellings, townhouses, and apartments, installed beneath sinks, showers, bathtubs, and floor drains to prevent the passage of sewer gas, odors, and vermin into occupied spaces.
  • Commercial Construction: Traps are used in commercial construction for office buildings, retail stores, hotels, restaurants, and other commercial facilities, installed beneath sinks, showers, bathtubs, and floor drains to prevent the passage of sewer gas, odors, and vermin into occupied spaces.
  • Industrial Construction: Traps are used in industrial construction for factories, warehouses, and industrial facilities, installed beneath sinks, showers, bathtubs, and floor drains to prevent the passage of sewer gas, odors, and vermin into occupied spaces.

Conclusion

In construction, a trap refers to a plumbing device used to prevent the passage of sewer gas, odors, and vermin from the drainage system into occupied spaces. By preventing sewer gas, protecting occupant health, and ensuring plumbing efficiency, properly installed traps are essential for ensuring the health, safety, and comfort of occupants in residential, commercial, and industrial buildings.

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