Bridge Outlet Data Fields

Bridge Outlet data can be edited on either the Bridge Outlet Grid Window of the Links Grid or the Bridge Outlet Property Sheet.

To view and edit all bridge outlet data, use the Property Sheet.

This table describes all the bridge outlet specific data which can be used to define a bridge outlet.

Common Data Fields

Fields that are common to the majority of objects can be found in the Common Fields topic.

Bridge Outlet Data

Database Table Name: hw_bridge_outlet

Show Columns

Database Names

Size, Type and Units

Defaults and Error Limits

Field Name

Help Text

Database Field

Data Type

Size

Units

Precision

Default

Error Lower Limit

Error Upper Limit

Warning Lower Limit

Warning Upper Limit

ID Unique identifier for the bridge outlet id Text 64   0          
Bridge US node ID Upstream node ID of bridge to which the outlet is associated. bridge_us_node_id Text 64   0          
Bridge link suffix Link suffix of bridge to which the outlet is associated. bridge_link_suffix Text 1   0 1        
Asset ID For reference only. Designed as a reference to an asset database, but could be used for anything. asset_id Text 64   0          
System type

Choose the system type from the dropdown list. See System Type for more information.

Database Value

Description

Help Text

STORM

Storm Rainfall collection system

FOUL

Foul Wastewater collection system (UK terminology)
SANITARY Sanitary Wastewater collection system (US terminology)
COMBINED Combined Rainfall and wastewater collection system
OVERLAND Overland Overland floodwater collection system
OTHER Other Other system type
system_type Text 10   0 Other        
Invert level Invert level measured above system datum invert Double   Z 3   -9999 9999   6000
Reverse flow model

Determines how the engine models reverse flow: either as a nominal headloss or by using the culvert inlet model.

Database Value

Description

NOMINAL

Nominal head loss

INLET

Become inlet

reverse_flow_model Text 8   0 Nominal        
Equation

Equation as defined in CIRIA Funders Report/CP/40, used to calculate the water level immediately upstream of the inlet.

Database Value

Description

A

A

B

B

equation Text 1   0 A        
K Equation constant as defined in CIRIA Funders Report/CP/40. k Double     4   0.0001      
M Equation constant as defined in CIRIA Funders Report/CP/40. m Double     3   0.01      
c Equation constant as defined in CIRIA Funders Report/CP/40. c Double     4   0.01      
Y Equation constant as defined in CIRIA Funders Report/CP/40. y Double     2   0.01      
Outlet headloss coefficient (Ko)

Outlet Headloss Coefficient, usually 1.0. (CIRIA Funders Report/CP/40)

headloss_coeff Double     2 1 0.01      
Inlet headloss coefficient (Ki) Constant as defined in CIRIA Funders Report/CP/40. inlet_headloss_coeff Double     2   0.01      

Bridges

Bridge Openings

Links Grid

Property Sheets