Pipe Attributes
- ID: Unique identifier assigned to this element.
- Label: Descriptive label for this element.
- Notes: Additional information about this element.
- GIS-IDs: List of associated IDs on the GIS/data-source side.
- Hyperlinks: Associate one or more web link, photo, word processing document, or other file with this element.
- Material: The pipe's material type.
- Diameter: Value represents the internal diameter of a circular pipe or four times the hydraulic radius for non-circular cross-sections.
- Manning's n: Mannings N
- Hazen-Williams C: Hazen Williams C Factor
- Modified Hazen-Williams Cr: Roughness factor used in the Modified Hazen-Williams equation.
- Darcy-Weisbach e: Darcy-Weisbach roughness height for the pipe wall.
- Has User Defined Length?: Allows the calculated scaled pipe lengths to be overridden with a user defined value.
- Length (User Defined): A user defined pipe length that is not scaled from the underlying map dimensions.
- Has Check Valve?: Defines whether the pipe contains a check valve that limits flow to a single direction. Direction of flow is with the direction of the pipe.
- Specify Local Minor Loss?: If true then the minor coefficient for the element is manually set, otherwise the value is derived from the minor loss library.
- Minor Losses: List of all associated minor losses associated with the element, and can be used to generate the composite minor loss coefficient.
- Status (Initial): Choices: Open, Closed
- Specify Local Bulk Reaction Rate?: If true than a local Bulk Reaction Rate can be specified for the pipe, otherwise the bulk reaction rate associated with selected constituent will govern.
- Bulk Reaction Rate (Local): Coefficient defining how rapidly a constituent grows or decays over time.
- Specify Local Wall Rate?: If true then a local wall reaction rate can be specified for the selected pipe.
- Wall Reaction Rate (First Order): First order coefficient defining the rate at which a substance reacts with the wall of a pipe. Is available if global constituent is set to first order.
- Wall Reaction Rate (Zero Order): Zero order coefficient defining the rate at which a substance reacts with the wall of a pipe. Is available if the global constituent is set to zero order.
- Zone: Specify the zone for the element.
- Installation Year: Specify the install year of the element. It does not affect the calculations.
- Wave Speed: The speed with which a disturbance (i.e. pressure wave) moves through the fluid in the pipe.
- Flow (Initial): A value corresponding to flow in the pipe at the beginning of the transient simulation.
- Hydraulic Grade (Initial Start): The start node hydraulic grade elevation at the beginning of the transient simulation.
- Hydraulic Grade (Initial Stop): The stop node hydraulic grade elevation at the beginning of the transient simulation.
- Pressure (Start): Pressure at the start node of the pipe.
- Pressure (Stop): Pressure at the stop node of the pipe.
- Number of Breaks: The number of breaks that occurred on this pipe.
- Use Local Duration of Pipe Failure History?: Override the global duration of pipe failure history with a local value.
- Duration of Pipe Failure History: The duration of pipe failure history for this pipe. By default uses the global duration.
- Pipe Break Group: The pipe break group this pipe belongs to.
- Cost of Break: The cost of the break for this pipe.
- Flow: Total flow through the pipe. If the value is negative the flow is traveling from the stop node to the start node, and vice versa if positivie.
- Velocity: Velocity of fluid through the pipe.
- Headloss Gradient: The headloss per unit length in the pipe.
- Headloss: Total headloss occuring in the pipe, including both friction and minor headlosses and any minor losses from isolation valves.
- Pressure Loss Gradient: The pressure loss per unit length in the pipe.
- Pressure Loss: Total pressure loss occuring in the pipe, including both friction and minor pressure losses and any minor losses from isolation valves.
- Flow (Absolute): Absolute value of flow through the pipe.
- Hydraulic Grade (Start): Hydraulic grade at start node of pipe.
- Hydraulic Grade (Stop): Hydraulic grade at stop node of pipe.
- Length: Displays either the scaled length or the user defined length depending on which option is set for the pipe.
- Travel Time: The length of the pipe divided by the velocity of flow through pipe.
- Headloss (Minor): Headloss resulting from minor losses in the pipe only. (Excludes isolation valve minor losses).
- Headloss (Friction): Headloss through pipe resulting from friction. (Includes any isolation valve minor losses).
- Area Full: Cross-sectional area of pipe.
- Shear Stress: Shear stress at current time step.
- Length (3D): Length derived from x, y and z coordinates of bounding node.
- Status (Calculated): Choices: Open, Closed
- Age (Calculated): Age at selected element for current time step.
- Trace (Calculated): Trace at selected element for current time step.
- Concentration (Calculated): Concentration at selected element for current time step.
- Concentration (Start): Concentration at start end of the pipe.
- Concentration (Stop): Concentration at the stop end of the pipe.
- Trace (Start): Trace percentage at start end of the pipe.
- Trace (Stop): Trace percentage at stop end of the pipe.
- Age (Start): Water age at the start end of the pipe.
- Age (Stop): Water age at the stop end of the pipe.
- Flow (Minimum Absolute): Minimum flow magnitude through pipe over the course of the simulation.
- Flow (Maximum Absolute): Maximum flow magnitude through the pipe over the course of the simulation.
- Velocity (Maximum): Maximum velocity of flow that occurs in pipe over the course of the simulation.
- Velocity (Minimum): Minimum velocity of flow that occurs in pipe over the course of the simulation.
- Headloss Gradient (Minimum): Minimum headloss gradient that occurs at the selected pipe.
- Headloss Gradient (Maximum): Maximum headloss gradient that occurs at the selected pipe.
- Flow (Minimum): Minimum flow through pipe over the course of the simulation.
- Flow (Maximum): Maximum flow through the pipe over the course of the simulation.
- Age (Minimum): Minimum age in the pipe over the course of the simulation.
- Age (Maximum): Maximum age in the pipe over the course of the simulation.
- Trace (Minimum): Minimum trace in the pipe over the course of the simulation.
- Trace (Maximum): Maximum trace in the pipe over the course of the simulation.
- Concentration (Minimum): Minimum concentration in the pipe over the course of the simulation.
- Concentration (Maximum): Maximum concentration in the pipe over the course of the simulation.
- Age (Start) (Minimum): Minimum age at the start end of the pipe over the course of the simulation.
- Age (Start) (Maximum): Maximum age at the start end of the pipe over the course of the simulation.
- Age (Stop) (Minimum): Minimum age at the stop end of the pipe over the course of the simulation.
- Age (Stop) (Maximum): Maximum age at the stop end of the pipe over the course of the simulation.
- Trace (Start) (Minimum): Minimum trace at the start end of the pipe over the course of the simulation.
- Trace (Start) (Maximum): Maximum trace at the start end of the pipe over the course of the simulation.
- Trace (Stop) (Minimum): Minimum trace at the stop end of the pipe over the course of the simulation.
- Trace (Stop) (Maximum): Maximum trace at the stop end of the pipe over the course of the simulation.
- Concentration (Start) (Minimum): Minimum concentration at the start end of the pipe over the course of the simulation.
- Concentration (Start) (Maximum): Maximum concentration at the start end of the pipe over the course of the simulation.
- Concentration (Stop) (Minimum): Minimum concentration at the stop end of the pipe over the course of the simulation.
- Concentration (Stop) (Maximum): Maximum concentration at the stop end of the pipe over the course of the simulation.
- Alert Level (Now): Maximum alert severity of the current element for the current time step.
- Alert Level (Ever): Maximum alert severity of the current element.
- Has Calculation Messages Now?: If true then the current element has associated calculation warning messages for the current time step.
- Is Closed?: True if the current element is closed during the current time step.
- Is Open?: Set to true if open during the current time step.
- Is Initially Closed?: If true, the initial condition for the control element is "Closed" or "Off."
- Has Flow Reversal? (Now): True if the flow direction reversed compared to the previous time step.
- Has Flow Reversal? (Ever): True if the flow direction reversed during the calculation time.
- Controlled?: Is true if a control action in the current control set references the selected element.
- Minor Loss Coefficient (Unified): Displays the current minor loss value for the element, depending on whether its derived or local.
- Head (Maximum, Transient): Maximum head at any point along the pipe over the course of the transient simulation.
- Head (Minimum, Transient): Minimum head at any point along the pipe over the course of the transient simulation.
- Pressure (Maximum, Transient): Maximum pressure at any point along the pipe over the course of the transient simulation.
- Pressure (Minimum, Transient): Minimum pressure at any point along the pipe over the course of the transient simulation.
- Flow (Maximum, Transient): Maximum flow at any point along the pipe over the course of the transient simulation.
- Flow (Minimum, Transient): Minimum flow at any point along the pipe over the course of the transient simulation.
- Velocity (Minimum, Transient): Minimum velocity at any point along the pipe over the course of the transient simulation.
- Velocity (Maximum, Transient): Maximum velocity at any point along the pipe over the course of the transient simulation.
- Wave Speed Adjustment Percent: The wave speed adjustment applied to this pipe (relative to the original wave speed) so that a sharp pressure-wave front can travel the length of one of the pipe's interior segments in one time step.
- Wave Speed Adjustment: The wave speed adjustment applied to this pipe so that a sharp pressure-wave front can travel the length of one of the pipe's interior segments in one time step.
- Length Adjustment Percent: The length adjustment applied to this pipe (relative to the original length) so that a sharp pressure-wave front can travel the length of one of the pipe's interior segments in one time step.
- Length Adjustment: The length adjustment applied to this pipe so that a sharp pressure-wave front can travel the length of one of the pipe's interior segments in one time step.
- Velocity (Initial, Transient): The flow velocity along the pipe at the beginning of the transient simulation.
- Pressure (Maximum at Stop Node, Transient): Maximum pressure at the pipe's stop node over the course of the transient simulation.
- Pressure (Maximum at Start Node, Transient): Maximum pressure at the pipe's start node over the course of the transient simulation.
- Pressure (Minimum at Stop Node, Transient): Minimum pressure at the pipe's stop node over the course of the transient simulation.
- Pressure (Minimum at Start Node, Transient): Minimum pressure at the pipe's start node over the course of the transient simulation.
- Head (Maximum at Stop Node, Transient): Maximum head at the pipe's stop node over the course of the transient simulation.
- Head (Maximum at Start Node, Transient): Maximum head at the pipe's start node over the course of the transient simulation.
- Head (Minimum at Start Node, Transient): Minimum head at the pipe's start node over the course of the transient simulation.
- Head (Minimum at Stop Node, Transient): Minimum head at the pipe's stop node over the course of the transient simulation.
- Upsurge Ratio at Start Node: Ratio of maximum pressure at the pipe's start node over the course of the transient simulation to the pressure at the beginning of the transient simulation.
- Upsurge Ratio at Stop Node: Ratio of maximum pressure at the pipe's stop node over the course of the transient simulation to the pressure at the beginning of the transient simulation.
- Head (Initial at Start Node, Transient): The head at the pipe's start node at the beginning of the transient simulation.
- Head (Initial at Stop Node, Transient): The head at the pipe's stop node at the beginning of the transient simulation.
- Air Volume (Maximum, Transient): Maximum air volume along the pipe over the course of the transient simulation.
- Vapor Volume (Maximum, Transient): Maximum vapor volume along the pipe over the course of the transient simulation.
- Velocity (Maximum Flushing): The maximum achieved pipe velocity across all flushing events. If comparing against previous results (for other alternatives/scenarios) this result is the maximum achieved velocity across all flushing events for which results exist.
- Shear Stress (Maxmum Flushing): The maximum achieved shear stress across all flushing events. If comparing against previous results (for other alternatives/scenarios) this result is the maximum achieved shear stress across all flushing events for which results exist.
- Flushing Event: The flushing event that resulted in the pipe maximum achieved velocity. If comparing against previous results, this flushing event may be defined in another alternative/scenario.
- Satisfies Flushing Target Velocity?: True if the maximum achieved velocity for the pipe is greater than or equal to the target velocity.
- Satisfies Flushing Target Shear Stress?: True if the maximum achieved shear stress for the pipe is greater than or equal to the target shear stress.
- Break Rate: The break rate for the pipe over time.
- Break Rate (Pipe Group): The break rate for the group the pipe belongs to.
- Projected Breaks: The projected number of breaks for this pipe.
- Annual Expected Cost: The annual expected cost of the breaks for this pipe.
- Present Worth: How much the pipe is currently worth based on the projection cost.
- Break Rate (Scaled): A weighted combination of the individual pipe break rate and the pipe break rate of the group to which the pipe belongs.