Culvert diameter (Water Overlay)

This figure depicts the original way of implementing culverts (left), and the current way they are implemented in the Tygron Platform (right).

Icon	Key	Unit	Range	Description	Default value
	CULVERT_DIAMETER	m		The inside diameter of the circular-shaped Culvert, or the inside width of a rectangular-shaped Culvert.	1

The diameter of the culvert not only affects the amount of water which can flow through the culvert, but also the amount of grid cells on either side of the culvert which allow water to flow through to the other side. The greater the culverts diameter, the more cells are considered to be part of the entry- and exitside of the culvert.The amount of cells which are considered to be part of the entry- and exitside of the culvert, are based on the value of the CULVERT_DIAMETER attribute. If the CULVERT_DIAMETER attribute is > 25m, the amount of cells has reached a maximum and does not increase anymore.

Notes

• A culvert is identified as a rectangular (box) culvert when it also has the Culvert rectangular height key set to a non-zero positive value. In such situation, the diameter is interpreted as the width of the cross section of the rectangular culvert.

See also

• Culvert formula (Water Overlay)

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Water Module

Water Module

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Hydraulic structures

Inlet

Inlet q • Inlet area • Inlet capacity •  Lower threshold •  Upper threshold • Inlet underground

Pump

Pump q •  Lower threshold •  Upper threshold • Pump angle • Pump capacity • Pump area

Culvert

Culvert diameter • Culvert rectangular height • Culvert threshold • Culvert n

Weir

Weir height • Weir width • Weir angle • Weir coefficient • Weir target level

Sewer overflow

Sewer overflow • Sewer overflow speed

Drainage

Drainage q • Drainage datum • Drainage active • Drainage overflow threshold

Output

Object flow output • Object height output • Object datum output a • Object datum output b • Object width output

Related

Building attributes • Hydrological features •  Terrain attributes • Model attributes • Results • Simulation data