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Construction Scheduling

Bar Chart Construction Schedule

Sunday, May 20, 2018

Create Bar Chart Construction Schedule On-line

[ Example Construction Schedule ]

Most suitable for Construction scheduling of small to medium size Projects with a duration up to one year,
as well as for educational purpose.
A New version is now available in beta, You can Try it Now

How to use this simple tool?

  • Break down the construction project into major activities,
  • Estimate the time required for each Activity, based on knowledge of the work, experience, as well as records of similar previous jobs
  • Specify, for each activity, the previous activity - or activities - that should be completed before its start. These are called predecessors of the activity.

If you are using IE8 please make sure to enable Active scripting in Internet Options

Required DataWhat is that?Value
Enter Project Title with a max of 40 characters
Project Start Date: Select Start date between Jan 1, 2010 and Dec 31, 2025
28-Aug-2014 _______________ Select Start Date
Project Completion Date: Select date between Jan 1, 2010 and Dec 31, 2025
28-Aug-2014 _______________ Select Completion Date
Enter A positive integer less than or equal to 10

Note: The above tool is designed to produce a bar chart construction schedule for small projects, with a maximum of ten activities.


The Tables below show the data entered for the Example bar chart Construction Schedule.

Project TitleExample
Project Start Date:09-Jun-2010
Project Completion Date05-Dec-2010
No. of Activities6

CodeDescriptionDuration (days)Predecessor Activities
1Activity 160 
2Activity 2301,3,6
3Activity 3301
4Activity 4606
5Activity 5302
6Activity 6301,3

View Output Bar Chart Schedule

This tool is available in other languages: [Chinese (Simplified)] - [French] - [German] - [Spanish] - [Portuguese]


Earliest Start of an activity: (The highest earliest finish of precedent activities) Or (The earliest start of precedent activity + duration of lead), whichever is the greater.
Earliest Finish of an activity: (The earliest start of the activity plus its duration) Or (earliest finish of preceding activity + duration of lag) whichever is the greater
Latest Finish of an activity: (The lowest latest start of succeeding activities) Or (the latest finish of succeeding activity - duration of lag), whichever is the lesser.
Latest Start of an activity: (The Latest Finish of the activity minus its duration) Or (the latest start of succeeding activity minus duration of lead), whichever is the lesser.
Critical Activity: An activity whose earliest and latest start and finish times are the same.
Total Float: The difference between latest start and earliest start or latest finish and earliest finish.
Free Float: The lowest earliest start of succeeding activities minus earliest finish of the activity.
Interfering Float: The difference between Total Float and Free Float.
Independent Float: The lowest earliest start of succeeding activities minus highest latest finish of preceding activities minus duration of the activity.

Use of the Construction bar chart schedule

The chart produced by the above tool can be utilized by a number of people for varying purposes, subject to the degree of details involved:
  • The estimator requires the schedule in order to develop proposed methods and estimates.
  • The site manager needs the chart at the start of the work to determine his resource requirements.
  • During execution of the works, the site manager needs the chart to assist him to direct his resources, to monitor progress, to evaluate the effect of the changes that may be imposed by varying productivity, by mistakes, by unforeseen physical conditions or by the owner.
  • The foreman need the schedule in order to know when and where to allocate labors, as well as to order materials.