Georgia Septic Installer Practice Test

What type of fabric is recommended to cover the aggregate in a pressurized system?

1. Geotextile synthetic fabric

2. Plastic sheeting

3. Polyester cloth

4. Natural fiber cloth

The correct answer is: Geotextile synthetic fabric

Geotextile synthetic fabric is the recommended choice for covering the aggregate in a pressurized septic system due to its specific properties that enhance system performance and longevity. This type of fabric allows for adequate water flow while preventing the intrusion of fine particles and soil into the aggregate, which can clog the system and reduce its efficiency. Using geotextile synthetic fabric ensures that the drainage capabilities are maintained, while also safeguarding the aggregate from contaminants that could compromise the system's operation. Its durability and resistance to biological degradation make it particularly suitable for septic applications, as it can withstand the environmental conditions typically present in such systems. In contrast, options like plastic sheeting do not provide the necessary drainage and can trap moisture, leading to potential system failures. Polyester cloth and natural fiber cloth may not possess the durability or permeability required to effectively support a pressurized system, making them less ideal for this application. Hence, geotextile synthetic fabric stands out as the best choice.