Given emerging technology â and a contracting economy â health plans are looking hard at whether carve-outs for pharmacy benefits, disease management, specialty pharmacy, and behavioral health care are worth the money.
1 The speed in high-grit sewage handling systems should not exceed 12 ft/sec. 2  The flow and velocity in sewage systems with low grit concentrations should not exceed 18 ft/sec.
Design of storm sewer systems generally assumes open channel flow for the minor storm event. To. maintain open channel flow, the system must be sized so that the water surface remains open to. atmospheric pressure (i. e. the flow depth is less than the pipe diameter). For t his to happen, the HGL. must be contained within the pipe.