Lecture No.3 - Gantt Chart
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Transcript of Lecture No.3 - Gantt Chart
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Project Management
Gantt Charts
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Pre-Assessment
Who has heard of a Gantt Chart?
Who would like to explain what a Gantt chart is?
Who has used a chart to help organize a project?
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Why should I care?
Gantt charts can help with lifes projects
Remodeling a bathroom
Building a deck
Organizing a wedding
Cooking
Group Projects
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Think about a group project you have done
How did it go?
Was it easy to split up tasks?
Did you have timelines?
Was it easy to co-ordinate the tasks?
Was it easy to express what needed to be done and when?
Did you use any techniques that helped?
Wish there was a better way?
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Why should I care (cont.)
Used by project managers
Construction Managers
Excellent employment opportunities
Projected employment 487,000 in 2006, 564,00 in 2016
Increase of 77,00 in next 10 years
Median Salary Building equipment contractors $75,200 (Php3.1M/yr)
Electrical contractors $74,380 (Php3.1M/yr)
Residential building construction $69,400 (Php2.9M/yr)
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Why Should I Care (cont.)
Engineering and Natural Science Managers
Job growth about as fast as average
Median Salary
R&D in the physical, engineering and life sciences $120,000
Pharmaceutical and medicine manufacturing $111,070
Architectural, engineering and related services $88,990
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Expectations
Understand that a Gantt chart is a useful tool for planning and scheduling projects
Should be able to read and produce a Gantt chart
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Gantt Chart Overview (cont.)
What does it look like?
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The Good, the Bad and the Ugly
Advantages Planning and scheduling Allows you to assess how long a project should take
Lays out the order in which tasks need to be carried out
Helps manage the dependencies between tasks
Monitoring a project Allows you to immediately see what should have been
achieved at a point in time
Shows how remedial action may bring the project back on course
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Advantages and Disadvantages (cont.)
Shortcomings
Quite unwieldy for project with more than about 30 activities
Does not represent the size of a project or the relative size of work elements
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History of the Gantt Chart Created by Laurence Gantt (1861-1919) in
1910 Mechanical engineer, management consultant
and industry advisor
Used as a visual tool to show scheduled and actual progress of projects
Accepted as commonplace today but was an innovation of world wide importance
Used on large construction projects Hoover Dam in 1931 Interstate highway network in 1956
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Evolution of the Gantt Chart
Basic Gantt Chart (1918)
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Evolution (cont.)
fill in the bar method to show project completion
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Sequential and Parallel Activities
Sequential, also called Linear
Activities that are dependent on other activities being completed first
Ex: Must design before build
Must preheat oven before inserting pizza
Parallel, also called Nondependent
Not dependent on completion of any other task
May be done at any time before or after a particular stage is reached
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Steps for Creating a Gantt Chart
1. List all activities in the plan
2. Head up graph paper with the days or weeks through to task completion
3. Plot the tasks onto the graph paper
4. Schedule activities
5. Presenting the analysis
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Steps for Creating a Gantt Chart
1. List all activities in the plan
earliest start date
estimated length of time it will take
Whether it is parallel or sequential
If sequential show which tasks they depend on
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List All Activities Example Task Possible Start Length Type Dependent
on
1. High level analysis
week 1 5 days Sequential
2. Selection of hardware platform
Week1 1 day Sequential 1
3. Install and commission hardware
Week3 2 weeks Parallel 2
4.Detailed analysis of core modules
Week1 2 weeks Sequential 1
5. Detailed analysis of supporting utilities
Week1 2weeks Sequential 4
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Steps (cont.)
2. Head up graph paper with the days or weeks through to completion
3. Plot the tasks onto the graph paper
Draw a rough draft
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Steps (cont.)
4. Schedule Activities
Schedule activities so that sequential actions are carried out in the required sequence
Where possible, schedule parallel tasks so that they do not interfere with sequential actions
Allow some slack time for holdups, overruns
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Steps (cont.)
5. Presenting the analysis
Prepare final version
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Checking for Understanding
What are some reasons to use a Gantt chart (benefits of using)?
What are some projects where you might use a Gantt chart?
What is the difference between a dependent and independent task?
Give an example
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Checking for Understanding (cont.) It is day 5
What are they behind schedule on?
What are they ahead of schedule on?
Based from Report
Date 11/26/2013:
Activity WRITE
REPORT is behind
schedule.
Activity
EVALUATION is
ahead of schedule.