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Review the Results in WinCan VX

To load the inclination graph in WinCan VX, click on the inclination launcher button in the lower-left corner of the WinCan VX user interface, or click on the inclination button in the ‘Extended Modules’ ribbon. The button in the lower-left corner of the user interface is dynamic in that it is greyed out unless you have a section in the section list highlighted that has an inclination test, so if there is no inclination test on this section, then the button is not active.

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Immediately you will see the data for the test on the current inspection. maybe you have done two or more inspections of the pipe and several inclination tests? There can only be one inclination test attached to one inspections, so in this case, you must select the inspection that you wish to review the inclination test for, or use the navigation buttons inside the inclination panel.

There is a whole lot of information going on here which all needs to be understood to get the best out of the inclination module!

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• The pipe ID is shown in the top-left of the inclination panel along with the date and time of the inspection that is currently in view.

• In this example, the test has been done from the upstream end and has been done forwards, so the total length of the pipe which is in the pipe header information can be seen on the lower right hand end of the x axis of the graph, so it goes from left to right, 0 m to 23 m. If this example had an inclination test done from the other end, then 23 would be on the left and zero would be on the right, because the measurement points are always measured from the end where the CCTV truck is located, regardless of the inclination test direction.

• The upstream manhole is plotted on the left side of the graph, always. This is independent of the inspection direction or the inclination test direction as has been described previously.

• The downstream manhole is plotted on the right side, always.

• The pipe diameter can be seen on the graph by the distance between the two sloping brown lines. These lines represent the ‘perfect’ line of the pipe at its invert (the bottom of the pipe) and at its crown (the top of the pipe), so by looking at the scale on the left side of the graph, we can see the difference between 2.2 and 1.9 is 0.3 m which is the diameter of the pipe in the section header.

• The inclination curve is always draw from the end where the CCTV truck is placed, so the blue curve is either drawn from left to right or right to left based on the inspection and inclination directions, but the starting altitude is taken from the section header data. In this example, the pipe depth at the upstream end is 2.2 m, so this is the starting point for all the following points as the test is carried out and the camera goes down the pipe.

• Notice the key above the upstream manhole ID on the graph. This describes the lines that you can see - the thick blue curve and the thin brown lines of the pipe.

• Notice the key above the downstream manhole ID on the graph which shows that the green arrow above the centre of the graph shows the CCTV inspection direction and the blue arrow shows the inclination test direction. These two directions are mutually exclusive from each other.

• In the bottom right corner we see the ‘Measured distance’. This is not the length of the pipe or the length of the inspection. It is the length of the inclination test which is not necessarily the same as the other length values and is also independent of the other lengths. So, in this example, the inclination test does not quite cover all of the pipe (21.75 ÷ 23 = 0.95 or 95 %) so only 95 % of the pipe was tested in the inclination test. There is no shame in this value, it is quite normal for these lengths to not quite align, but in perfect conditions, the values should be as close as possible.

• In the top left quadrant of the panel there are number of user options which can affect what is shown on the report (more on these later), the calculated delta height (fall) value, the calculated gradient value and a printing button which will print the currently displayed graph. Note - the inclination charts can also be printed from the printing control panel, with the same results, but the difference there is that all of the graphs from the project will be printed, not just the currently selected graph.

• In the top right quadrant there are some navigation buttons to view the next/previous inclination test in the project and a delete button which will delete the current test from the project, and then above these controls (not indicated on the image above), there are a lot of user controls that affect the ouput which we will go into more detail later.