- Storm and Sanitary Collection System Design for Sewer Line Construction in HYDRA Software -

Optimize
Your
Design!

Ultimately, the whole reason for creating a sewer model in the first place is to serve as a tool for design work. HYDRA® includes powerful features for design of new systems and problem solving in existing systems. With these features you can be confident that your design work will stand the test of time.

Upgrading Existing Systems
With HYDRA®, every hydraulic analysis results set includes suggestions for solving system capacity problems. For each overloaded or surcharged pipe, HYDRA provides a design solution of replacement pipe, parallel pipe, and how much flow would need to be removed to meet design criteria. You can use these as a starting point for your own design solutions.

Design of New Systems
If you need to lay out a new sewer line, HYDRA® software includes powerful features for design of new pipes or channels for collection systems. You define the criteria for the design of your new pipes, including pipe depth, flow velocity, pipe diameter options, and d/D. HYDRA automatically optimizes the design based on your criteria and calculates any needed data, including invert elevations, pipe diameter, slope, match crowns, inverts, and 2/3 points. HYDRA selects its final design after trying nearly every possible alternate.

Construction Cost Estimation
HYDRA® software can calculate construction costs for design pipes based on your local factors. These include costs for bedding, backfill, soil shrinkage, excavation and hauling costs, pipe depth, unit prices for piping, and surface restoration. HYDRA calculates a chart of pipe in place at different depths, as well as costs for your design solution.

Construction Cost Factors

Calibration vs Design Flow
One of the most important yet often overlooked aspects of the design process is the flow upon which the design is based. Ultimately, the whole purpose of a sewer model is to make design decisions. Once you have calibrated a model to flow meter data, the question remains: On what flow do you create your design? HYDRA's unmatched flow management features include special functions to adjust the flow for use in design without a loss of accuracy. "Worst-Case Scenario Analysis" dynamically aligns the rain-derived flow with the sanitary hydrograph. Flow generation layers provide an easy method of increasing population densities as you plan for the future. Or, you can simply increase a type of flow, such as sanitary, by a certain percentage without adversely effecting other aspects of the model.

For indepth reading, check out Chapter 4 "The Collection System" of the Hydra User's Manual.