manag ppt by san

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SCIENTIFICSCIENTIFICMANAGEMENTMANAGEMENT

BYBY

HENRY LAURENCE GANTTHENRY LAURENCE GANTT



HENRY LAURENCE GANTTHENRY LAURENCE GANTT



HISTORY OF HENRY LAURENCEHISTORY OF HENRY LAURENCEGANTTGANTT (1861 (1861 ±± 1919)1919)

Henry Laurence Gantt worked as a management consultantas well as a background in mechanical engineer by trade .

Henry Gantt is known for creating his self-named easily-viewed scheduling and monitoring diagram.

A commonly accepted project management instrumentthese days, it was an innovation of world-wide significancein 1920, founded on Mr. Gantt¶s work while ship buildingduring WWI. Changing history forever, Gantt charts havesubsequently been used to schedule and monitor large

construction projects like the Hoover Dam started in 1931and the Eisenhower highway network launched in 1956.



BIOGRAPHYBIOGRAPHY

Henry Laurence Gantt was born in CalvertCounty, Maryland, USA. He graduated fromMcDonogh School in 1878 and Johns Hopkins

College. After working as a teacher and draftsman, he

pursued mechanical engineering.

In 1887, he joined Frederick W. Taylor in theleveraging the theory of scientific management of Midvale Steel and Bethlehem Steel, where theyworked together until 1893.

Later in his career as a management consultant,in addition to the Gantt charts, he futher made

scientific management history by devising the µ ¶



CONT««CONT««

The theory behind the µtask and bonus¶ methodof wage payment (1901) was that it would creategreater worker efficiency and productivity by

rewarding the tasks monitored via Gantt charts. Another contributor to the classical theories of

management is Henry Gantt, who is known forthe invention of the Gantt Chart.

The Gantt Chart is a graphical representation of the duration of tasks against the progression of time.



GANTT CHARTGANTT CHART

During the era of scientific management,Henry Gantt developed a tool fordisplaying the progression of a project in

the form of a specialized chart. An early application was the tracking of

the progress of ship building projects.

Today, Gantt's scheduling tool takes the

form of a horizontal bar graph and isknown as a Gantt chart, a basic sampleof which is shown :



CONT«.CONT«.

The horizontal axis of the Gantt chart is atime scale, expressed either in absolutetime or in relative time referenced to the

beginning of the project. The time resolution depends on the

project - the time unit typically is in weeksor months.

Rows of bars in the chart show thebeginning and ending dates of theindividual tasks in the project.



GANTT CHARTGANTT CHARTENHANCEMENTENHANCEMENT

A vertical marker can used to mark thepresent point in time.

The progression of each activity may be

shown by shading the bar as progress ismade, allowing the status of each activityto be known with just a glance.

Resource allocation can be specified foreach task .

Milestones can be shown.



ROLE ON PROJECTROLE ON PROJECTPLANNINGPLANNING

For larger projects, a work breakdown structurewould be developed to identify the tasks beforeconstructing a Gantt chart.

For smaller projects, the Gantt chart itself mayused to identify the tasks.

The strength of the Gantt chart is its ability todisplay the status of each activity at a glance.

Even when network models are used, the Ganttchart often is used as a reporting tool.



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manag ppt by san

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