Bridge Inlet Data Fields

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

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

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

Common Data Fields

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

Bridge Inlet Data

Database Table Name: hw_bridge_inlet

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 inlet id Text 64   0          
Bridge US node ID Upstream node ID of bridge to which the inlet is associated. bridge_us_node_id Text 64   0          
Bridge link suffix Link suffix of bridge to which the inlet 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 outlet model.

Database Value

Description

NOMINAL

Nominal head loss

OUTLET

Become outlet

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

Unsubmerged inlet control loss coefficient

(CIRIA Funders Report/CP/40)

k Double     4   0.0001      
M

Exponent of flow intensity for inlet control

(CIRIA Funders Report/CP/40)

m Double     3   0.01      
c

Submerged inlet control loss coefficient

(CIRIA Funders Report/CP/40)

c Double     4   0.01      
Y

Submerged inlet control adjustment factor

(CIRIA Funders Report/CP/40)

y Double     2   0.01      
Inlet headloss coefficient (Ki) Constant as defined in CIRIA Funders Report/CP/40. headloss_coeff Double     2   0.01      
Outlet headloss coefficient (Ko) Outlet Headloss Coefficient, usually 1.0. (CIRIA Funders Report/CP/40) outlet_headloss_coeff Double     2 1 0.01      

Bridges

Bridge Openings

Links Grid

Property Sheets