Which material is used on distribution pipes to prevent silt entry?

Which material is used on distribution pipes to prevent silt entry?

• A. Steel mesh
• B. Plastic wrap
• C. Nylon screen material
• D. Burlap

Answer: (C)

The main idea is choosing a filtering material that blocks sediment from entering distribution pipes while still letting water flow freely. Nylon screen material fits this role well because it provides a fine, uniform mesh that stops silt particles but remains permeable enough for water to pass. It’s durable in moist underground conditions, resistant to rot, and flexible, making it easy to install around pipe ends or as a wrap. Steel mesh, though strong, can rust and degrade in wet soil, compromising the seal and potentially contaminating the flow path. Plastic wrap isn’t designed for long-term filtration or burial and can tear or shift. Burlap deteriorates quickly when exposed to moisture and can shed fibers, which isn’t acceptable for maintaining clean water flow. Nylon screen offers the right balance of filtration effectiveness, durability, and ease of installation to prevent silt entry into distribution pipes.

The main idea is choosing a filtering material that blocks sediment from entering distribution pipes while still letting water flow freely. Nylon screen material fits this role well because it provides a fine, uniform mesh that stops silt particles but remains permeable enough for water to pass. It’s durable in moist underground conditions, resistant to rot, and flexible, making it easy to install around pipe ends or as a wrap.

Steel mesh, though strong, can rust and degrade in wet soil, compromising the seal and potentially contaminating the flow path. Plastic wrap isn’t designed for long-term filtration or burial and can tear or shift. Burlap deteriorates quickly when exposed to moisture and can shed fibers, which isn’t acceptable for maintaining clean water flow. Nylon screen offers the right balance of filtration effectiveness, durability, and ease of installation to prevent silt entry into distribution pipes.