This document discusses the location-time diagram, a method for graphically presenting time schedules for longitudinal construction projects like roads, bridges and pipelines. It shows activities along both a time and distance axis to indicate their location and progress rate. The advantages are that it clearly communicates the project scope and schedule in one view and shows activity order, location and relationships. The disadvantages are that it is time-consuming to produce and update, activities' logical relationships may not be retained for large projects, and critical paths require visual interpretation. An example location-time diagram is provided.

1. JONA S, IZAAKS C, KEENDAWALA JGROUP 10

2. Content
 What is the Location-Time Diagram?
 Advantages of Location-time Diagram
 Disadvantages of Location-time Diagram
 Example
 Similarities
 Conclusion
 References

3. 1.What is the Location-Time
Diagram?
 Is also known as Time-Chainage diagrams, is a c
ombination of the bar chart and line-of-balance s
cheduling formats .
 method of graphically presenting a time schedul
e for all types of longitudinal projects such as :
 Pipelines
 Railways
 Bridges
 Tunnels
 Road

4. What is the Location-Time
Diagram?...
 Activities in location-time diagrams are displayed
both along a time axis and along a distance axis
according to their relative linear position.
 It shows not only the location of the activity but al
so the direction of progress and the progress rat
e.
 Activities can be presented as geometrical shape
s showing the occupation of the work site over ti
me such that conflicting access can be detected
visually.

5. 2. Advantages of Location-Time
Diagram
When Constructing
 Roads
 Railways
 Pipelines
 Tunnels
 Transmission Lines
 Bridges

6. Advantages of Location-Time
Diagram...
 Clearly communicate the scope by showing the p
roject details and the schedule in one view.
Easy to know :
 The order of activities or operations
 Where activities are happening locationally
 How activities must progress in relation to
direction and distance
 Time, key dates and holidays, etc.

7. 3.Disadvantages of Location-Time
Diagram
 It does not retain the logical relationship among a
ctivities, so both planning and updating are very
difficult in cases of large project.
 Time consuming to produce and a good deal of p
ractice is required to get them right.
 Can be costly to rearrange the existing layout an
d not very robust to disruption.
 Critical path and float is only apparent through vi
sual interpretation.

8. Activities
 Program activities and Duration
Activities Duration (week)
Set up site 4
Activity 1 4
Activity 2 6
Activity 3 4
Activity 4 3
Activity 5 5
Activity 6 5
Holiday
Offices for contractor and engineer
Excavation
Construction of SSG
Construction of Culvert
Drainage
Construction of Sub-Base
Construction of Base

9. LOCATION-TIME DIAGRAM

10. 5.SIMILARITIES
 all clearly depict time and sequence
 Applied to repetitive project ,except the bar char
t
 Good pictorial presentation of construction sequ
ences
 Indicate the progress

11. 6.CONCLUSION
 Location time diagram is more superior to the
other two scheduling methods or tools

12. 7.REFERENCES
 Cook,B & Williams,P.(2009). Construction plan
ning programming and control (3rd ed.). Singap
ore: john Wiley & Sons ltd.
 Peter, M, P. (2014). Time chainage: what is tim
e chainage. Retrieved from: http://www.timech
ainage.co.uk/principles.html