Wastewater Collection Systems Questions with Correct Answers

True or False persons responsible for the operation and maintenance of wastewater collection systems usually are the ones responsible for the design and construction of these systems. Correct Answer false True or False the wastewater in collection systems is usually conveyed by pumping. Correct Answer false True or False inflow is the seepage of groundwater into a sewer system, including service connections. Correct Answer false True or False velocities in sewers should be calculated in the office to be sure actual velocities are high enough to prevent the deposition of solids. Correct Answer false True or False knowledge of the daily and annual variations or fluctuations in a collection system's wastewater flow is useful in planning maintenance programs for the system. Correct Answer true True or False the amount of support provided the sewer pipe by the sides of a trench decreases as the width of the trench increases. Correct Answer true True or False steel pipe is rarely used for force mains. Correct Answer false True or False polyvinyl chloride (pvc) pipe is used for both gravity and pressure sanitary sewers. Correct Answer true True or False in order to make and effective design review, and operator must be familiar with the elements of design that can create problems during the life of the collection system. Correct Answer true why should collection system operators have a basic knowledge of how engineers design collection systems? 1) to design collection systems 2) to do a better job 3) to estimate costs of construction projects 4) to prepare plans and specifications Correct Answer to do a better job