What is the distance between manholes?

The distance between manholes is typically set within a range to ensure adequate access for maintenance and inspection of sewer systems. In municipal engineering, a standard distance of approximately 300 to 500 feet is commonly applied, reflecting the need for operability and maintenance efficiency. This range allows workers to effectively cover the necessary area without creating obstacles or excessive spacing that would hinder accessibility.

Choosing this specific range balances between the need for accessibility and the practical limitations of infrastructure layouts in urban areas. Considering this information, it is clear why the specified distance of 300 to 500 feet is recognized as appropriate for positioning manholes. The other options reflect distances that are either too broad or fail to capture this commonly accepted standard, making the selection of this range particularly relevant for effective wastewater management practices.