Treatment Plant Operator Exam Study Guide Answers

Where should manholes be located in the collection system? The answer to the question is E, all of the above. Manholes are meant to be used to access to the collection system. They should be in any changes of elevation, pipe size, directions or any junctions. This is to give you access to any of these conditions. Manholes may be located over mains, trunks or interceptors and should be 300 to 500 feet apart (this may vary depending on textbook). The distance should reflect the ability of cleaning equipment (length of available jet hose). Manholes should always be considered as confined spaces. The