Hydrants
How to define hydrants
We recommend that you specify which junctions represent hydrants directly on EPANET or your GIS files. Otherwise, Qatium will not be able to identify them. You can do it by adding the following data to your files:
GIS files
| Field | Group |
|---|---|
| Attribute | hydrant |
EPANET
| Option 1 | |
|---|---|
| Property | Description (i.e., the extra properties column that appears in fifth position after the semi-colon) |
| Value | ;hydrant |
| Option 2 | |
|---|---|
| Property | Junction ID |
| Value | H_ |
For example:
[JUNCTIONS]
;ID Elev Demand Pattern
H_12344 65.3850 0.000000
Node2 4.9660 0.000000
Node3 61.5460 0.000000
Node4 61.3450 0.000000 You can also specify hydrants directly in the .inp file using a text editor.
How Qatium processes that data
If not specified, it’ll remain as junction.
Hydrants properties
Emitter coefficient
Data you add to your files
GIS files
| Field | Emitter |
|---|---|
| Attribute | <number> |
EPANET
| Property | Emitter Coeff. |
|---|---|
| Value | <number> |
How Qatium processes that data
If not specified, Qatium will ignore it.
Water quality
Currently, Qatium only supports water age to calculate Water Quality. To have accurate water quality data shown in Qatium, you must include the water age parameter in your files.
EPANET
- Set Parameter property to Age in the Quality options in EPANET
- Set the Initial Quality property for all the nodes. If not specified, EPANET assumes that the value is 0.
- Export the .inp file and upload it to Qatium to create a network or update an existing one.
GIS files
Include the Water Age property inside your GIS data. Then add a number (up to 2 decimal places) representing the number of hours.
| Field | Water Age |
|---|---|
| Attribute | <number = hours> |