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Inclination Measurement

Version: 1.24
Date: 1825.1104.20212022

1 Introduction
2 System requirements
2.1 Hardware
2.2 Software
3 Inclination Measurement
4 Displaying Inclination Curve(s)
5 Settings inside the Inclination Panel
6 Entering Manhole Altitudes
7 Printing inclination data
7.1 Printing inclination data based on VAV-P50/SW-P91

Introduction

The inclination of a pipe section is always measured with a sensor built in the camera crawler. So an inclination profile is created that can finally be edited and printed. The inclination profile curve is displaying significant divergences from the linear course of a pipeline section (depressions, elevations etc.). It thus helps the engineer to assess the stability of the pipes lay in the soil.

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There are 4 different cases that WinCanVX has to take into account in order to have the values drawn correctly.

1. Inspection direction = downstreams -> Measurement = Forward -> camera driving downwards and producing NEGATIVE values

2. Inspection direction = downstreams -> Measurement = Backward -> camera driving upwards in backward direction and producing NEGATIVE values

3. Inspection direction = upstreams -> Measurement = Forward -> camera driving upwards and producing POSITIVE values

4. Inspection direction = upstreams -> Measurement = Backward –> camera driving downwards in backward direction and producing POSITIVE values

The operator thus does not need to worry about the start point of the measurement: The inclination curve for a gravity sewer will always be descending from left to right.

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Select the section whose inclination has already been measured and hit the command button Extended Modules > Inclination. This is going to display the corresponding inclination diagram:

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1. Inclination curve showing the %-values recorded by the camera sensor directly. Small peaks changing abruptly (1a) display vertical jerky movements of the crawler due to unevenesses of the pipe sole (joints, holes, cracks, etc.).

2. Line zero: Positive values are lying above this line and show the profile curve (3) ascending at a specific position. Negative values are lying beneath this line and show the profile curve (3) descending at a specific position.

3. Average inclination profile curve calculated from the %-values transmitted by the camera sensor (1).

4. Straight link between the position of the START manhole and the position of the END manhole. The distance between the two parallel lines depend on the value put in the field Diameter (OBJ_Size1).

5. Height of the start manhole put automatically to zero.

Settings inside the Inclination Panel

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Some country standards require the entry of the manhole altitudes and the output of these altitude values on the inclination graph.
The following sketch shows the meaning of the fields OBJ_FromNodeInvert and OBJ_ToNodeInvert that must both be available in the section input mask for each template in order to have the slope of the pipe represented exactly as in reality.

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Legend:

Printing inclination data

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