# Getting Started¶

Attention

Make sure that you have the required data ready before starting on this section. Refer to section Requirements.

There are a number of example EPANET 2.0 network files provided with RRPAM-WDS. They are available at rrpam_wds\examples directory relative to your RRPAM-WDS installation. (e.g. In windows this is usually C:\Program Files (x86)\rrpam-wds\rrpam_wds\examples) For this walk-though we use the example Adjumani_network_simplified2.inp. This network is a hypothetical case loosely based on a actual case study from Sub-Saharan Africa.

## Step 1¶

First create a new project, which will ask you to locate the EPANET 2.0 file that you want to use in your project.

Navigate to the location of Adjumani_network_simplified2.inp and select that file.

Then you will be asked to select a location to save your project. While it is possible to save a new project in any location in your computer, it is advised to create a new directory and save your project inside that.

As shown about, for this example I created a directory my_project on the Desktop and saved the project as project1 inside it.

At this stage RRPAM-WDS will take a few seconds to perform hydraulic analysis on the network and show the following things:

1. A diagram representing the hydraulic network;
2. A list of ‘links’ of the network with their basic properties.
3. A representation of the risk-matrix (We have not provided any information of the failure probabilities, so for the moment just ignore this window.)

## Step 2¶

At this stage we need to input the failure rate data. We need to provide aging parameters ($$N_0$$ and $$A$$) and the Age of each pipe (link) at the time of analysis.

RRPAM-WDS facilitates input of aging parameters based on asset groups. Let’s assume two groups of pipes. Following are the aging parameters estimated for each group. The last column gives the cost of replacement for a km of pipe in terms of millions of financial units.

Diameter Range $$N_0$$ $$A$$ Cost (mil/km)
$$d\ \leq$$ 80 mm 0.0291 0.0185 0.7
80 mm $$\gt\ d$$ 0.0222 0.0136 1.0

Go to the Asset Data window and select and select Property Groups tab, Change the number of groups to 2 and enter the above values.

Now the next step is to assign each pipe to one of these two groups. Go to the Assign Assets tab on the Asset Data (same) window. Use the table below to read the Age values.

Note: For those pipes with IDs not explicitly given in the table, use the default value ( listed in the last row of the table with ID=’OTHERS’).
Pipe ID Age (Years)
TX 35
P1 20
P2 20
P9 30
P10 32
P3 20
P11 35
P4 20
P5 20
P13 35
P17 35
P24 35
P27 35
P28 35
P50 35
OTHERS 20