For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed A. 1.5 B. 2.0 C. 2.5 D. 3.0

The correct answer is B. 2.0.

The ratio of maximum daily sewage flow to the average daily sewage flow is called the peak factor. It is a measure of how much the sewage flow varies throughout the day. The peak factor is typically higher for smaller sewers, as they are more likely to be overloaded during peak flow periods.

For sewer mains of 0.5 to 1 m diameter, the peak factor is typically assumed to be 2.0. This means that the maximum daily sewage flow is twice the average daily sewage

288 64 288 64S117.2 64 74.6 75.5c-23.5 6.3-42 24.9-48.3 48.6-11.4 42.9-11.4 132.3-11.4 132.3s0 89.4 11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube