Abstract

A user guide on how to make good inclination tests and how to interpret the output results in Wincan VX.

Author

Steve Peregrine BEng Hons, Senior Technical Manager

Sections

Introduction

This document is designed to offer some insight into drainage inclination testing equipment, explain some of the logic that is considered inside the WinCan VX application, help readers to understand the output reports and assist with diagnosing problems.

Definitions

Be very careful with these first two words in this list - they are almost the same in English but have very different meanings.

• Attitude - is the angle of slope of the device at any point during the inclination test.

• Altitude - is the height of the device at any given point during the test measured from a specified datum.

• Gradient - is the slope of the pipe or the inclination test represented as a percentage where 0% is dead flat, -1% is a drop of 1m over 100m length in the direction of flow (i.e. a good drain, a happy drain), +1% is a rise of 1m over 100m length (i.e. an unhappy drain) and -100% is a gradient of 45 degrees or 100m drop in 100m length.

• Delta Height - is the change in height either along the entire length of the pipe, the length of the inclination test or between two measurement points with the test. As with Gradient, negative values refer to a drop in height in the direction of flow and positive values describe a rise in height.