Regarding item 4 - please also see the below article:
Junction Vs. Hydrant
Regards,
Jesse DringoliTechnical Support Manager, OpenFlowsBentley Communities Site AdministratorBentley Systems, Inc.
1. Here is a link to a wiki technote that will show you how to multiply 2.1 with the base demand. Make sure you have the scenario set up to use the desired demand alternative.
communities.bentley.com/.../how-to-edit-demands-globally.aspx
You can also use a multiplier in the calculation options.
communities.bentley.com/.../10333.aspx
If this does not answer question number one, please give us more clarification on what you are looking to do.
2. To get the snapshot, you would go to Analysis > Calculation Options. Set the Time Analysis Type to steady state. Set Is EPS Snapshot to True if this is an EPS snapshot, not a regular steady state run. An EPS snapshot is a steady state run, but it considers the starting date and time of the analysis and applies the appropriate pattern multipliers for that time.
NOTE: Since an EPS is not run, attributes such as tank levels are derived from the same initial conditions as a steady state run.
3. See numbers 1 and 2.
4. As for using a hydrant versus a junction, it depends on what you are looking for in the node. They are both non-storage nodes. With a hydrant, you can enter a hydrant flow curve. The hydrant flow curve allows you to find the flow the distribution system can deliver at the specified residual pressure, helping you identify the system's capacity to deliver water to that node in the network. Both nodes can have an unlimited number of demands associated with them.
Terry FosterTechnical SupportHydraulics and Hydrology product lineBentley Systems, Inc.