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This is a minor bug that appeared when we introduced the ability to alter the Colbrooke-White K value. This has been fixed in Version 7.22 which is available for download here. 

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Until it is Registered, the program will run in Demo mode. Once you have purchased the program, to Register it simply e-mail us your Installation Code (found in Help\About). We will e-mail back the Registration Code (usually within 24 hours) which can be entered in Help\Register Product. This will unlock all the features of the program. 

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Yes, if you re-build a pc, just e-mail us with the Installation Code of the new pc and the Installation Code of the pc that is being retired. We will e-mail you a replacement Registration Code, usually within 24 hours.

A:

No, a license for a single pc can only be used on one pc. Additional licenses are only $55.

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The position of the Top of Bank Markers is very important when you have a well defined channel with wide "floodplain" areas on one or both sides.  It is important in these situations because when the flow depth rises to just higher than the main channel, the wetted perimeter suddenly increases dramatically for only a small additional increase in cross-sectional area, and the overall roughness or impedance to flow can also increase.

In these situations, if the Top of Bank Markers are located at the ends of the cross-section, the program calculates a flow at the top of the main channel (say X cumecs at depth Y), and, when it calculates the flow at the next incremental height (Y + dY), because of the increased wetted perimeter or roughness, the flow calculated can be less than X cumecs.  However, if the channel could carry X cumecs at a depth of Y, clearly it would normally be capable of carrying more than that at a greater depth. By ensuring that the Top of Bank Markers are located at the point where the channel meets the floodplain, the calculated flow will increase from X at the depth of Y + dY. Please refer to the User's Guide (Appendix A - Placement of the Top of Bank Markers) for more details.

Having said that, it is not always clear where the channel meets the floodplain, or where the “main channel” is for a road cross-section! As a guide, in general the Top of Bank Markers need to be placed at the location where the grade changes "substantially". It can help to view the cross-section using the 1:1 scale option to help determine where this occurs, and where the Top of Bank Markers should be located.

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You can get two decimal places by printing out the Overbank Results

or

You could obtain a screen dump of the Table of Results print-out.

or

or

If you have a low flow, select Setup\Discharge Units and then “Litres/sec” from the Main Menu. This will display 2 decimal points when printing the Table of Results.

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1. Pipe Flow

From Version 7.20 you can view or print a rating table for flow in the pipe selected on the Discharge Information screen by selecting "View/Print Rating Table". There is no option to output this to a file yet.

2. Channel Flow

After loading in (or creating) a cross-section data file, you can select “Output to file” from the “Output” option on the Main Menu. This creates 3 text files in the same folder as the data file.  (A check is done to see whether the files already exist in that folder, and a warning is given if they do.)  These text files contain: 

(i)   the Water Surface Elevation, Discharge, Velocity and Area for the whole cross-section,

(ii)  the Table of Results output values, and

(iii) the Overbank Output values.

The output filename contains the name of the input file, some text to identify what output the file contains, and the current calculation increment.  For example,  if the input filename is “yarra_xs_001.dat” and the calculation increment is 0.01, you will get the following output files:

 (i)  “yarra_xs_001_Overbank_01.txt”

(ii)  “yarra_xs_001_TableOfResults_01.txt”

(iii) “yarra_xs_001_WSELQVA_01.txt”

By changing the calculation increment to 0.1 you can cut the output down to 10% of the size (roughly) but still end up with the same rating table graph.  The calculation increment value you adopt will depend on the amount of detail you need in your results tables etc.  For the above example, if the calculation increment was changed to 0.1 you would get these three files:

(i)   “yarra_xs_001_Overbank_10.txt”

(ii)  “yarra_xs_001_TableOfResults_10.txt”

(iii) “yarra_xs_001_WSELQVA_10.txt”

The files can be read into Excel by selecting “Open”, and then changing the file type to All Files or Text Files.  After selecting the required output file, the Text Import Wizard comes up and you select Next (Delimited data), then “Comma delimited” and Finish from the next page.  The data will be loaded into Excel with column headings, and you can then quickly create graphs or manipulate the data as you need to.

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