描述
- To perform inspection, cleaning, and removal of any obstruction present in the sewage line.
- Manholes are often used as an access point for an underground public utility, allowing inspection, maintenance, and system upgrades
- The majority of underground services have manholes, including water, sewers, telephone, electricity, storm drains, district heating, and gas.
- BEST QUALITY
A maintenance hole, also known as a manhole, is an entryway through which maintenance personnel pass when working underground. ... Any improvements to maintenance holes are a benefit to workers in trenchless construction.
