I designed a network in the Storm CAD program and when the program was calcuated the velocity value in the many of conduits was equal to zero. What should I do?

Usually zero velocity is due to zero flow. What is the flow in the pipe? If it is zero, then determine why that is? If there is flow but it's low and the slope is steep, the velocity, may not be zero. Check the number of decimal places by right clicking velocity and using Units and Formatting.

Usually zero velocity is due to zero flow. What is the flow in the pipe? If it is zero, then determine why that is? If there is flow but it's low and the slope is steep, the velocity, may not be zero. Check the number of decimal places by right clicking velocity and using Units and Formatting.