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Check Files 1d mhc: Difference between revisions

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This GIS layer contains information on the Manholes in the 1D model. Manholes are used to model energy losses at junctions and can occur in the same location as pit channels (which convey water between the ground and the underground drainage network). The manholes can be manually assigned or automatically created and numerous loss methods are available. Refer to the <u>[https://downloads.tuflow.com/TUFLOW/Releases/Latest/TUFLOW%20Manual.pdf TUFLOW manualManual]</u> for further guidance.<br>
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'''Attributes of mhc_check'''<br>
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| ID||The ID of the manhole.
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| Type||The type of manhole. Refer to the <u>[https://downloads.tuflow.com/TUFLOW/Releases/Latest/TUFLOW%20Manual.pdf TUFLOW Manual]</u> for a full list of available manhole types.
| Type||The type of manhole, options are:<br>
* '''"C"''' Circular chamber
* '''"R"''' Rectangular chamber
* '''"J"''' Junction with no chamber
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| Loss_Approach||The manhole loss approach. The options are outlined in the Manhole section of the<u>[https://downloads.tuflow.com/TUFLOW/Releases/Latest/TUFLOW%20Manual.pdf TUFLOW Manual]</u>.
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| Ignore||IfWill be '''"T"''' (true) if the manhole has been set to ignore, '''"F"''' (false) otherwise.
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| Invert_Level||The bottom or bed elevation of the manhole.
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| Flow_Length||The length of the manhole chamber in the direction of flow.
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| ANA||AnyAdditional additionalstorage nodalsurface area thatfor hasthe been addednode at the manhole (value in square metres or square feet).
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| K_Fixed||Fixed component of the calculated manhole loss coefficient. If using the Fixed approach, this is the only coefficient applied.
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| N3_reserved||Not used.
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| i_1d_layer||The index to the input layer that has created the manhole. For example, an '''i_1d_layer''' value of 42 would be the 4th2nd input layer (1d_nwk_M08_pits_0011d_nwk_EG15_004_P) below.<br>
<font color="blue"><tt>Read GIS Network </tt></font> <font color="red"><tt>==</tt></font><tt> mi\1d_nwk_M04_channels_001.MIF1d_nwk_EG15_001_L</tt><br>
<font color="blue"><tt>Read GIS Network </tt></font> <font color="red"><tt>==</tt></font><tt> mi\1d_nwk_M05_bridge_001.MIF1d_nwk_EG15_004_P</tt><br>
<font color="blue"><tt>Read GIS Network Manhole</tt></font> <font color="red"><tt>==</tt></font><tt> mi\1d_nwk_M07_trunk_998.MIF1d_mh_EG15_004_P</tt><br>
<font color="blue"><tt>Read GIS Network </tt></font> <font color="red"><tt>==</tt></font><tt> mi\1d_nwk_M08_pits_001.MIF1d_nwk_EG15_001_L</tt>
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| No_Inlet_Culverts||The number of incoming culverts based on the digitised direction.
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|}
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For MapInfo users the style of the point object is dependent on the manhole type and dimensions. For example a '''"C"''' (circular) type manhole is shown as a circle object with the size proportional to the flow width.
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