This document defines construction scheduling and describes methods for preparing and using schedules. Scheduling graphically represents construction activities with start/finish dates and relationships. Preparing a schedule involves dividing work into operations, sequencing them based on relationships, calculating quantities and durations. Schedules are used to plan resources, check progress, and systematically carry out projects. Advantages include selecting optimal execution methods and planning arrangements. Classification includes material, labor, equipment and financial scheduling. Common methods are bar charts, milestone charts and network analysis.

1. Scheduling

2. Definition
• A graphical representation showing the phasing rate of
construction activities with the starting and completion dates and
the sequential relationship among the various activities.
• It is done so that the work can be carried out in orderly and
effective manner

3. Preparing of construction schedules
01
Project is divided into
no of operations.
02
Sequencing of the
operations done after
knowing their
relationship properly.
03
The quantity of work
for each operation has
to be calculated.
04
The time required for each
operation as well as the total
project has to be calculated.
The time can be derived from the
amount of work to be carried and
the rate of performance of each
work.

4. Uses of Scheduling
• The quantity of work involved, labour, materials and equipment
for each stage of the work can be calculated.
• The actual progress of the work can be checked with planned one.
• A project can be carried out in a systematic manner using
scheduling.

5. Advantages of Scheduling
• From a list of alternative method of execution, the best one can be
selected.
• The resource required for completion of work like men, money,
materials, equipment etc. can be calculated.
• Since the starting and end time is known the arrangement for the
work can be done prior to the starting of a work.

6. • Resource utilization is optimized.
• Actual progress vs the planned progress of the work can be
studied.
• Inter-relationship of various activities at different stages can be
known.
• Total duration of the project can be known.

7. Classification of Scheduling
Material
scheduling
01
Labour
scheduling
02
Equipment
scheduling
03
Financial
scheduling
04

8. Methods of scheduling
Bar charts or Gnatt charts
Milestone charts
Network analysis

9. Bar chart
Introduced by Henry Gnatt around 1900 A.D
A bar chart consists of two co-ordinate axes one representing the jobs to
be performed and the other representing the time.
Each bar represents one specific job or activity of the project.
The beginning and end of each bar represents the time of start and finish
of that activity.
Length of the bar represents time required for the completion of that job.

10. Following steps are to be followed
Divide the project
into many
activities.
List out the
activities.
Inter relation
among the
activities should
be found.
Arrange the
activities in a
systematic way.
Calculate the
quantity of work
and the time
required.
Draw it according
to the scale.

11. Building a Gantt Chart
• List all tasks from the project along the vertical axis
• List time frame along the horizontal axis
Activity 1
Activity 2
day 1 day 2 day3

12. • Activities: Create box the length of each activity time
duration
– E.g., activity one is scheduled from day1-day3
Activity 1
Activity 2
Time Frame: day 1 day 2 day3

13. Eg.Gantt
Chart for
House
Building
Project

14. Limitations
• Can be used only for small projects.
• Interdependencies between various activities in a project cannot be
shown.
• Progress of the work cannot be monitored scientifically.
• Delays in work cannot be detected.
• Critical activities are not denoted.
• Financial aspects are not included in this chart.
• Does not indicate the critical activities.