What are Time Chainage Charts?
The time chainage chart (also known as Time Distance or Line of Balance) is an extension of the Bar Chart (Gantt Chart) known to all planners and project managers. A bar chart uses the horizontal axis to represent time, so it displays each activity as a simple bar showing the start and end date. Nothing about an activitys location or progress rate is displayed. Any potential conflicts are not easily identified in this kind of chart. Providing more information about each task, the time chainage chart uses the vertical axis as well as the horizontal one. This allows location and progress rate information to be introduced. The usual format for time chainage charts uses the x axis for location (or chainage) and the y axis for time. So for a linear type work task, a diagonal line will be produced indicating not only start and end date, but also start and end location (chainage) and the slope of the line will indicate progress rate. So when would you use a time chainage chart? Basically, any
