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Introduction
In the Danish DanDas standards, we have a calculated scoring value for the pipe called the Fysisk Indeks (Physical Index).
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The calculations are the same for both standards.
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The Lookup Table
These are the lookup values for the scores that are used to calculate the Fysisk Indeks. The values are the same for DanDas 2.5 and 2.6 Except for the two values at the bottom that are highlighted in red. These values are only used in DanDas 2.5 and are not used in DanDas 2.6.
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The result of this is that the VA (water level) is defined in the inspection from the beginning to the end.
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The Calculations
The calculations of S and F look like this:
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If a continuous observation is recorded by the user as 1m long or less, then we do not use the L term in the equation, we assume that the observation is not continuous. Continuous observations must be more than 1m long, or else they are not continuous.
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Testing
The attached spreadsheet can be used for testing the calculation of Fysisk Indeks.
In it, you will enter the lengths of all observations in each code group with the specified class in the red cells, then enter the section length in the blue cell and the calculations will be made.
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Where an observation code is a single point observation, enter a length of 1. If the code appears 4 times in the inspection, enter 4.
Where an observation is continuous, enter the full length of the continuous and sum up continuous lengths of the same code and class,
The code S1 (start) is treated the same as a the VA (water level) code, so if the section is 20m long and it has S1, class 2 at the beginning and no other VA codes during the inspection, then we enter 20 into the length for this code and class.
If there is a VA code class 3 at 8m, then we have 8m of S1 class 2, and then 12m of VA class 3 which gives us the total 20m.
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