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Line of Balance Software

Line of Balance Software Overview

Line of Balance Software is used to prepare line-of-balance charts or line-of-balance diagrams, a type of linear scheduling (see Linear Scheduling Software) or time-distance diagram used in the production and construction industries. For construction projects, line of balance charts and line of balance software are predominantly used in the commercial building and high-rise construction industries to plan, control and report construction schedules, by representing the progress of construction trades across multiple physical areas of construction, such as buildings, floors, rooms or areas.
A screenshot of a project which uses line of balance software from Turbo Chart to schedule each contractor

Line of Balance Software can generate line of balance charts using three methods:

Directly generated from scheduling software applications, examples are Asta Powerproject, or Trimble Vico Office

Produced manually, such as drawing or AutoCad software applications

Produced by linking to scheduling data in scheduling software applications (eg. Turbo-Chart, or excel)

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Turbo Chart's Line of Balance Software demonstrated on a screenshot for a project which needed to plot time and location

Line of Balance Software requirements

Line of Balance Software creates line of balance charts by producing charts using dual axes. The horizontal axis usually represents time, and the software allows selection of the time period to be show, as hours, days, weeks or months. Gridlines are drawn by the line of balance software to create the date/time grid. The second vertical axis is used to represent the physical work areas.

For Line of Balance charts the software needs to be able to represent physical work areas as a sequence, that may be hierarchical if desired. Typical examples of the physical work areas may be Building, Floor, Area, Room. The physical work axis is presented in the order that the works will be undertaken in, usually in a vertically upward direction. The physical areas at the lower end of the vertical axis are work areas where each trade commences their work, and the areas at the top of the vertical axis are areas where each trade completes their work. The construction sequence is therefore “up” the vertical axes.

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Line of Balance Software Schedule Updating

Line of Balance charts typically represent schedule tasks using only lines to represent the works progress across the physical work locations, therefore Line of balance software as a minimum must be able to represent schedule tasks as lines on axes of time and location. As the angle of the lines represents the rate of production for each schedule task, changes made to the schedule that result in changes to production rates must be reflected in the line of balance software to ensure that the current schedule methodology is being represented. This may be either by direct manipulation on the line of balance chart or by refreshing data from the scheduling application.

A vertical high-rise building example of line of balance software from Turbo Chart being used to practical effect

Turbo-Chart as Line of Balance Software

Turbo-Chart may be used as a line of balance software tool in two different methods. 

Firstly by directly linking to a CPM scheduling tool, and all balancing and buffering conducted in the scheduling tool, Turbo-Chart can then import the schedule data for presentation.

By making task shapes display as line types, and using location start and end values representing the physical work locations, Turbo-Chart is able to produce output as a line of balance software tool. Find out more

Manually created Line of balance diagrams

Turbo Chart may also be used for the second method of manually creating Line of Balance diagrams by drag-and-dropping tasks on the chart itself, by following these steps:
Configure the Time axes to represent the intended project duration
Rotate the chart to present time along the horizontal axes
Configure the Location axes to represent a range of location that covers all the physical units of work to be completed
Create Highlighter location bands to name the physical units as bands along the location axes
Create a ShapeLibrary with values, shapes, colours etc, that represent each of the work types to be displayed on the line of balance diagram
Enable options to create and move tasks
Create a task, assign a ShapeLibrary value to this task
Move and extend the start and endpoints of this task to cover the start and end dates, and start and end physical area of that task
Repeat Steps 7 and 8 for each of the remaining task types
Move or modify the tasks to perform the “balancing” task
If a task is required to be split, select the source task, then press CTRL+C to copy this task, and CTRL+V to paste a copy of this onto the diagram. Move and position this second task as required

The dates for tasks that result from the manual creation are available as a table of tasks and dates that can be exported from Turbo-Chart for use in any other application requiring such information.

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