What is a mechanical means to remove material from a sewer?

What is a mechanical means to remove material from a sewer?

• A. Brushing.
• B. Cutting.
• C. Pumping.
• D. Sweeping.

Answer: (B)

Removing material from a sewer with a mechanical approach means using a tool that physically alters or breaks up the blockage so it can be cleared from the line. Cutting fits this, because mechanical cutters can sever or break through solid obstructions like roots, hard scale, or large pieces of debris, making them manageable to remove or push out and restoring flow. Brushing only cleans or scrubs the interior surface and won’t remove a solid blockage. Pumping moves wastewater and any loosened material through the line but doesn’t eliminate a solid blockage stuck in the sewer. Sweeping is not used inside sewer mains. So, cutting is the method that directly handles removing material from the sewer.

Removing material from a sewer with a mechanical approach means using a tool that physically alters or breaks up the blockage so it can be cleared from the line. Cutting fits this, because mechanical cutters can sever or break through solid obstructions like roots, hard scale, or large pieces of debris, making them manageable to remove or push out and restoring flow. Brushing only cleans or scrubs the interior surface and won’t remove a solid blockage. Pumping moves wastewater and any loosened material through the line but doesn’t eliminate a solid blockage stuck in the sewer. Sweeping is not used inside sewer mains. So, cutting is the method that directly handles removing material from the sewer.