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Integrated BIM tools, including Revit, AutoCAD, and Civil 3D
Professional CAD/CAM tools built on Inventor and AutoCAD
Transcript
00:04
InfoWater pro provides comprehensive fire flow modeling capabilities.
00:09
Fire demand requirements for hydrants can be specified
00:12
based on the various types of building structure
00:14
including single and multifamily residential, commercial or industrial.
00:20
Other fire demand characteristics are based on land use
00:23
or defined by the fire marshal or city requirements.
00:27
A well set up fire flow model can be used
00:30
to identify hydraulic vulnerabilities due to proposed operational changes.
00:35
The fire flow modeling process is a batch analysis of either all nodes with a
00:39
fire flow demand assigned or all nodes with
00:41
any domain with a fire flow demand assigned
00:45
the basic fire flow analysis is a two-step process that
00:48
automatically assigns the fire flow demand to each junction or hydrant
00:52
and solves for the residual pressure.
00:54
It then sets the residual pressure to the
00:56
specified value and solves for the resulting flow.
01:01
You can then determine the available pressure at the desired fire
01:03
flow demand and the available flow at the minimum residual pressure.
01:08
You can assign fire flow demands to a selected
01:10
junction node using the model explorer tools drop down.
01:15
Alternatively, you can assign a common fire flow demand to all junction nodes
01:18
in the current network domain by using the group editing functionality.
01:23
Fire flow demands are set based on the units you set in the
01:26
simulation options and will match whatever your
01:29
junction demands and flow units are.
01:32
So for example, if you set your flow units to gallons per minute,
01:35
then you could assign demands such as 1500 G PM for new homes.
01:40
You could assign 1000 GPM for some legacy areas or 500 GPM
01:45
for older areas with smaller pipes.
01:48
Fire flow simulations are set up and run in the run manager.
01:52
On the fire flow tab,
01:54
You can set up a standard fire flow run or a design fire flow run.
01:59
For a standard fire flow run, set the residual pressure (20 psi for example)
02:04
for each hydrant (junction node) in the modeled fire flow set.
02:08
Fill in other settings as needed.
02:10
For example, time and duration, if you want to run an extended duration simulation,
02:16
or you could set a maximum velocity constraint for
02:19
the assigned pipes (connecting pipes or domain pipes).
02:23
You can also click edit fire flow table to open the DB editor where
02:27
you can edit fire flow settings for all junctions selected for the simulation.
02:32
Once the standard fire flow simulation is run,
02:35
you can view results in the report manager.
02:38
Iin the fire flow standard report,
02:40
Two key fields that are often used
02:42
are residual pressure and hydrant available flow.
02:46
If the residual pressure is below the residual pressure set in the run manager,
02:50
this is an indication that the location cannot support the required fire flow assigned.
02:57
The hydrant available flow represents the flow rate which
02:59
creates the specified residual pressure at the junction.
03:04
A design fire flow run allows you to set a minimum pressure so that
03:08
pressures are not substantially reduced elsewhere in
03:10
the system, with or without velocity constraints.
03:14
The generated fire flow design report displays
03:17
the minimum pressures in the critical node searching
03:19
range and returns a design flow to be used as a maximum available fire flow.
03:25
This is to maintain minimum pressures in the distribution system.
03:30
Fireflow analyses where more than one hydrant is opened are simulated
03:33
using the multi fire flow tab of the run manager.
03:37
This is useful for examining fire flow either in
03:39
a steady state or in extended period analysis.
03:44
Also, this option can be used with an E P S simulation in which
03:47
one or more fire demands are evaluated over a period of time.
03:51
Users are then able to see how the available flow
03:54
and residual pressures are affected throughout the time steps.
03:58
The run manager also allows you to set up and run a hydrant curve analysis.
04:03
A fire hydrant rating curve shows the relationship between
04:06
residual pressure and the available flow for any hydrant.
04:10
Hydrant curves are often required by
04:12
fire departments responsible for ensuring that a
04:15
specific hydrant can adequately control a potential
04:18
fire demand and maintain minimum pressure.
04:22
The resulting graph details how the hydrant will operate at any given flow rate.
04:27
Any breaks in the curve are caused by a
04:29
change in operation at the specified flow rate.
Video transcript
00:04
InfoWater pro provides comprehensive fire flow modeling capabilities.
00:09
Fire demand requirements for hydrants can be specified
00:12
based on the various types of building structure
00:14
including single and multifamily residential, commercial or industrial.
00:20
Other fire demand characteristics are based on land use
00:23
or defined by the fire marshal or city requirements.
00:27
A well set up fire flow model can be used
00:30
to identify hydraulic vulnerabilities due to proposed operational changes.
00:35
The fire flow modeling process is a batch analysis of either all nodes with a
00:39
fire flow demand assigned or all nodes with
00:41
any domain with a fire flow demand assigned
00:45
the basic fire flow analysis is a two-step process that
00:48
automatically assigns the fire flow demand to each junction or hydrant
00:52
and solves for the residual pressure.
00:54
It then sets the residual pressure to the
00:56
specified value and solves for the resulting flow.
01:01
You can then determine the available pressure at the desired fire
01:03
flow demand and the available flow at the minimum residual pressure.
01:08
You can assign fire flow demands to a selected
01:10
junction node using the model explorer tools drop down.
01:15
Alternatively, you can assign a common fire flow demand to all junction nodes
01:18
in the current network domain by using the group editing functionality.
01:23
Fire flow demands are set based on the units you set in the
01:26
simulation options and will match whatever your
01:29
junction demands and flow units are.
01:32
So for example, if you set your flow units to gallons per minute,
01:35
then you could assign demands such as 1500 G PM for new homes.
01:40
You could assign 1000 GPM for some legacy areas or 500 GPM
01:45
for older areas with smaller pipes.
01:48
Fire flow simulations are set up and run in the run manager.
01:52
On the fire flow tab,
01:54
You can set up a standard fire flow run or a design fire flow run.
01:59
For a standard fire flow run, set the residual pressure (20 psi for example)
02:04
for each hydrant (junction node) in the modeled fire flow set.
02:08
Fill in other settings as needed.
02:10
For example, time and duration, if you want to run an extended duration simulation,
02:16
or you could set a maximum velocity constraint for
02:19
the assigned pipes (connecting pipes or domain pipes).
02:23
You can also click edit fire flow table to open the DB editor where
02:27
you can edit fire flow settings for all junctions selected for the simulation.
02:32
Once the standard fire flow simulation is run,
02:35
you can view results in the report manager.
02:38
Iin the fire flow standard report,
02:40
Two key fields that are often used
02:42
are residual pressure and hydrant available flow.
02:46
If the residual pressure is below the residual pressure set in the run manager,
02:50
this is an indication that the location cannot support the required fire flow assigned.
02:57
The hydrant available flow represents the flow rate which
02:59
creates the specified residual pressure at the junction.
03:04
A design fire flow run allows you to set a minimum pressure so that
03:08
pressures are not substantially reduced elsewhere in
03:10
the system, with or without velocity constraints.
03:14
The generated fire flow design report displays
03:17
the minimum pressures in the critical node searching
03:19
range and returns a design flow to be used as a maximum available fire flow.
03:25
This is to maintain minimum pressures in the distribution system.
03:30
Fireflow analyses where more than one hydrant is opened are simulated
03:33
using the multi fire flow tab of the run manager.
03:37
This is useful for examining fire flow either in
03:39
a steady state or in extended period analysis.
03:44
Also, this option can be used with an E P S simulation in which
03:47
one or more fire demands are evaluated over a period of time.
03:51
Users are then able to see how the available flow
03:54
and residual pressures are affected throughout the time steps.
03:58
The run manager also allows you to set up and run a hydrant curve analysis.
04:03
A fire hydrant rating curve shows the relationship between
04:06
residual pressure and the available flow for any hydrant.
04:10
Hydrant curves are often required by
04:12
fire departments responsible for ensuring that a
04:15
specific hydrant can adequately control a potential
04:18
fire demand and maintain minimum pressure.
04:22
The resulting graph details how the hydrant will operate at any given flow rate.
04:27
Any breaks in the curve are caused by a
04:29
change in operation at the specified flow rate.
InfoWater Pro provides comprehensive fireflow modeling capabilities to identify hydraulic vulnerabilities due to proposed operational changes. Fire demand requirements for hydrants can be specified based on:
The fireflow modeling process in InfoWater Pro is a batch analysis of:
The basic fireflow analysis is a two-step process that automatically assigns the fireflow demand to each junction (or hydrant) and solves for the residual pressure. It then sets the residual pressure to the specified value and solves for the resulting flow. Users can then determine the available pressure at the desired fireflow demand and the available flow at the minimum residual pressure.
Fireflow demands are assigned to a selected junction node using the Model Explorer Tools drop-down, or a common fireflow demand can be assigned to all junction nodes in the current network domain by using Group Editing.
Fireflow demands are set based on the units you set in the Simulation Options and will match whatever your junction demands and flow units are. So, for example, if you set your flow units to gallons per minute, then you could assign demands such as 1500 gpm for new homes. You could assign 1000 gpm for some legacy areas, or 500 gpm for older areas with smaller pipes.
Fireflow simulations are set up and run in the Run Manager, on the Fireflow tab:
Standard Fireflow Run example:
TIP: Click Edit Fireflow Table to open the DB Editor, where you can edit fireflow settings for all junctions selected for the simulation.
In the Report Manager, Fireflow Standard Report, there are 2 key fields:
A Design Fireflow Run example:
In the Report Manager, the Fireflow Design Report displays:
Multi-Fireflow: Fireflow analyses where more than one hydrant is opened are simulated in the Run Manager.
Hydrant Curve analysis: A fire hydrant rating curve that shows the relationship between residual pressure and the available flow for any hydrant:
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