Wednesday, September 25, 2013
InfoSewer Design of Existing Networks
InfoSewer can design either new or existing networks. Here is an example of how it updates pipe sizes based on the results of an EPS simulation and d/D constraints. The d/D for the two upstream gravity mains goes to 1 in the existing EPS simulation (Figure 1) and the velocity exceeds 10 ft/sec in the same two gravity mains (Figure 2). We are going to use InfoSewer Design for an Existing system and resize the pipe sizes so that the maximum d/D is 0.80 and the velocity is between 1 and 6 feet/sec (Figure 3). The design reports the needed new pipe diameters and cost (Figure 4) and then when the new pipe diameters are used in a new EPS solution the constraints for d/D are met and all pipes have a d/D value less than 0.80 (Figure 5).
Figure 1. d/D for the Upstream Gravity Mains in the EPS Solution
Figure 2. The Velocity for the Upstream Gravity Mains in the EPS Solution
Figure 3. Design Options for the Existing System Design
Figure 4. New Pipe Design diameters and d/D values
Figure 5. After applying the new pipe diameters of 24 and 30 inches, respectively the d/D values do not exceed 0.80.
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