WMS:OC Rational Job Control: Difference between revisions

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The Job Control parameters include all of the universal data necessary to run an Orange County analysis that are not a part of a basin, reach, or reservoir. The following are the specific parameters defined as part of job control:
[[Image:OC_Reational_Job_control.png|thumb|250 px|''OC Rational Method – Job Control'' dialog]]
The ''OC Rational Method – Job Control'' parameters include all of the universal data necessary to run an Orange County analysis that are not a part of a basin, reach, or reservoir. The following are the specific parameters defined as part of job control:


'''Units:''' By default Orange County performs computations in English units, however metric unit calculations can be specified.
*'''Units''' – By default Orange County performs computations in English units, however metric unit calculations can be specified.


'''Frequency:''' Select the return period of the design storm. Non-mountainous and mountainous IDF curve values are updated based on this selection. The user must enter IDF curve values for the 500-yr storm.
*'''Frequency''' – Select the return period of the design storm. Non-mountainous and mountainous IDF curve values are updated based on this selection. Enter IDF curve values for the 500-yr storm.


'''Expected Value:''' Toggle this check box on to do an expected value analysis. IDF curves and losses will be automatically updated for each sub-area if they have already been computed.
*'''Expected Value''' – Toggle this check box on to do an expected value analysis. IDF curves and losses will be automatically updated for each sub-area if they have already been computed.


'''IDF Curves:''' IDF (intensity-duration-frquency) curves in Orange County are calculated differently depending on the location of the analysis. This section is subdivided into non-mountainous (areas below 2000 feet) and mountainous (areas above 2000 feet) regions.  
===IDF Curves===
 
IDF (intensity-duration-frquency) curves in Orange County are calculated differently depending on the location of the analysis. This section is subdivided into non-mountainous (areas below 2000 feet) and mountainous (areas above 2000 feet) regions.  
'''Non-mountainous''' - The IDF curves are generated using a regression equation I = atb where:
 
* I - rainfall intensity (in/hr, mm/hr)
* t - duration (min)
* a, b - regression equation coefficients
 
'''Mountainous''' - The IDF curves are generated by interpolating between known intensities at specified time values.
 
 
[[Image:job_control.JPG]]


*'''Non-mountainous''' – The IDF curves are generated using a regression equation ''I = atb'' where:
** ''I'' – Rainfall intensity (in/hr, mm/hr)
** ''t'' – Duration (min)
** ''a, b'' – Regression equation coefficients


*'''Mountainous''' – The IDF curves are generated by interpolating between known intensities at specified time values.


==Related Topics==
==Related Topics==
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{{WMSMain}}
{{WMSMain}}
[[Category:OC Rational|J]]
[[Category:WMS Parameters|O]]
[[Category:WMS Job Control|OC Rational]]
[[Category:OC Rational Dialogs|J]]
[[Category:Equations|OC Rational]]

Latest revision as of 15:58, 14 December 2023

OC Rational Method – Job Control dialog

The OC Rational Method – Job Control parameters include all of the universal data necessary to run an Orange County analysis that are not a part of a basin, reach, or reservoir. The following are the specific parameters defined as part of job control:

  • Units – By default Orange County performs computations in English units, however metric unit calculations can be specified.
  • Frequency – Select the return period of the design storm. Non-mountainous and mountainous IDF curve values are updated based on this selection. Enter IDF curve values for the 500-yr storm.
  • Expected Value – Toggle this check box on to do an expected value analysis. IDF curves and losses will be automatically updated for each sub-area if they have already been computed.

IDF Curves

IDF (intensity-duration-frquency) curves in Orange County are calculated differently depending on the location of the analysis. This section is subdivided into non-mountainous (areas below 2000 feet) and mountainous (areas above 2000 feet) regions.

  • Non-mountainous – The IDF curves are generated using a regression equation I = atb where:
    • I – Rainfall intensity (in/hr, mm/hr)
    • t – Duration (min)
    • a, b – Regression equation coefficients
  • Mountainous – The IDF curves are generated by interpolating between known intensities at specified time values.

Related Topics


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