Working with engineering validation

The Engineering Validation object is used to define a set of additional checks on network data to ensure that it is consistent with expected engineering values.

Engineering validation is applied when you select Do Engineering Validation in the Network Validation dialog and add an Engineering Validation object to the selection box.

An information message is displayed in the Output window for each item of data that is outside normal values. You can use this window to investigate the fields for which messages have been included.

Creating an Engineering Validation object

In order to create a new Engineering Validation object, you must first create an Engineering Validation Group inside a Model Group. See Creating groups within a model group and Creating a database object within a group for more information.

The Engineering Validation object is created with default rules and values already included. You cannot add new validation rules, but you can switch rules on and off, and change the threshold values used by any of the rules.

Modifying engineering validation rules

A set of default rules are displayed in the Engineering Validation dialog. Any of the validation rules can be modified:

• The Modified by User column indicates which rules you have changed.
• You can disable a validation rule by clicking the Check Rule box. Click again to restore the rule.
• You can enable or disable all the validation rules at once. To do this, right-click the Engineering Validation dialog and choose Enable All or Disable All from the context menu.
• Each rule can be assigned a Priority Level, which is shown in the Output window. By default, engineering validation rules are given a priority of 3. You can change this to any numeric value. For serious errors or warnings, you can set the priority level to 1 or 2, respectively.
• The Minimum and Maximum values against which the data is checked can be edited, where appropriate. The Units are shown in each case.

To use the new set of validation rules, you must specify the engineering validation object in the selection box on the Network Validation dialog.

Default validation messages

The following messages are displayed by the default engineering validation rules.

In the Check Rule column in the table below:

• 1 means display warning if fails validation
• 0 means ignore

Validation message	Help text	Units	Rule ID	Check rule	Minimum value	Maximum value
Pipe Length outside expected range	Pipe Length < Minimum Value or > Maximum Value	L	1001	1	0.5	1000
Pipe Diameter outside expected range	Pipe Diameter < Minimum Value or > Maximum Value	PS	1002	1	25	1500
Pipe HW Roughness outside expected range	HW Roughness < Minimum Value or > Maximum Value		1003	1	50	200
Pipe CW Roughness outside expected range	CW Roughness < Minimum Value or > Maximum Value		1004	1	0.01	50
Pipe DW Roughness outside expected range	DW Roughness < Minimum Value or > Maximum Value		1005	1	0.002	0.09
Graphical length vrs attributed length outside expected range	Length calculated from link coordinates and geometry < Minimum Value (%) or > Maximum Value (%) of user defined Length		1006	1	90	110
Pipe has unexpected roughness type	Pipe has a Friction Type that is not used in the majority of the network		1007	1
Open Pipe with u/s and d/s nodes in different areas	From Node and To Node of pipe have different Area Codes		1008	1
Pipe user defined default values left in place	This rule is used to identify fields that may contain default values imported from external data. Pipe field has a value of 99 or 999.		1009	1	99	999
Links Overlaying	Link vertices are coincident with the vertices of another link. i.e. links are exactly on top of one another		1010	1
Node Elevation outside expected range	Node Elevation < Minimum Value AD or > Maximum Value AD	Z	2001	1	0	1000
Demand Node with 0 or missing demand	Node Demand data is incomplete		2002	1
Node user defined default values left in place	This rule is used to identify fields that may contain default values imported from external data. Node field has a value of 99 or 999		2003	1	99	999
Node Proximity - Nodes within maximum of each other	Node < Maximum Value from another node. (Distance calculated from node coordinates)	L	2013	0		1
System Type - Node connected to different system types	System Type - Node connected to different system types (The node has a different system type to one or more of its connected links)		2014	0
Reservoir/Tank volume outside expected range	Reservoir Volume < Minimum Value or > Maximum Value	WN_VO	3001	1	10	10000
Reservoir/Tank Depth v. Volume last value not at TWL	Last Depth entry in Reservoir Depth / Volume grid is not equal to depth calculated from Top Water Level - Bottom Water Level	Y	3002	1
Reservoir ground level above bottom water level outside expected range	Ground Level at Reservoir minus Reservoir Bottom Water Level < Minimum Value or > Maximum Value	Y	3003	1	-10	30
Reservoir elevation above bottom water level outside expected range	Elevation at Reservoir minus Reservoir Bottom Water Level < 0 m or > Maximum Value	Y	3004	1	0	5
Valve Diameter outside expected relative range	Valve Diameter < Minimum Value(%) or > Maximum Value (%) of upstream or downstream pipe Diameter		4001	1	60	100
PRV Set Pressures Outside expected range	PRV Control Pressure < Minimum Value or > Maximum Value	WN_P	4002	1	10	100
Valve - no Minor Loss added	Valve Loss Coeff. (Open) not specified		4003	1
Valve - no Construction Type selected	Valve Curve not specified.		4004	1
Valve Opening outside expected range	Valve Opening < Minimum Value or > Maximum Value (%)		4005	1	0	100
Meter Diameter outside expected relative range	Meter Diameter < Minimum Value or > Maximum Value (%) of upstream or downstream pipe Diameter		5001	1	60	100
Pump Diameter outside expected relative range	Pump Pressure Diameter or Pump Suction Diameter < Minimum Value or > Maximum Value (%) of upstream or downstream pipe Diameter		6001	1	60	100
Fixed Head Control Head outside expected range	Fixed Head Control Head < Minimum Value AD or > Maximum Value AD	Z	7001	1	0	1000
Demand Diagram Daily Coefficient outside expected range	Demand Diagram Daily Coefficient < Minimum Value or > Maximum Value		8001	1	0.5	2
Demand Diagram Monthly Coefficient outside expected range	Demand Diagram Monthly Coefficient < Minimum Value or > Maximum Value		8002	1	0.5	2
Demand Diagram Hourly Coefficient outside expected range	Demand Diagram Category profile Factor < Minimum Value or > Maximum Value		8003	1	0.1	5
Demand Diagram profile not normalized	Demand Diagram Category profile has not been normalized		8004	1
U/S Pipe - D/S Pipe size difference exceeds expected relative range	Pipe Diameter < Minimum Value (%) or > Maximum Value (%) of upstream or downstream pipe Diameter		9001	1	50	200
Linked Nodes Height change exceeds expected range	Difference in height between connected nodes > Maximum Value	Y	9002	1		10