Henry Gantt’s legacy to Management is the Gantt Chart

Henry Laurence Gantt (1861-1919) was a mechanical engineer, management consultant and industry advisor. He developed Gantt charts in the second decade of the 20th century as a visual tool to show scheduled and actual progress of projects. Accepted as a common-place project management tool today, it was quite a radical concept and an innovation of world-wide importance in the 1920s.  Gantt charts were first used on large construction projects like the Hoover Dam, started in 1931 and the interstate highway network which started in 1956.

Note: The invention of horizontal bar charts for project scheduling was likely accomplished in Poland by Karol Adamiecki.  Apparently, however, news of his progress did not make it to the west, likely due to language differences and the slower dissemination of information in the 19th-20th centuries.

From “The Gantt Chart, A Working Tool of Management” by Wallace Clark (1922) :

“In 1917, after a careful inspection of certain factories in which Mr. H. L. Gantt had installed his methods, General William Crozier, then Chief of Ordnance, retained Mr. Gantt to act in a consulting capacity on production,, first at the Frankford Arsenal, and then immediately after the declaration of war, in the Ordnance Department at Washington.

Large orders had been placed with arsenals and other manufacturing plants for the production of arms and munitions, but it was difficult to get a comprehensive idea of what progress was being made in the filling of these orders. Quantities had suddenly jumped from hundreds to millions, and it was impossible to convey by means of typewritten tables the significance of such unusual quantities or the time necessary to produce them. Charts of the usual type were unsatisfactory because they did not sufficiently emphasize the time and because of their bulk, since only one item could be put on a sheet.

Mr. Gantt concentrated his attention on the development of a method of charting which would show a comparison between performances and promises. Several years previous to this time, he had used a chart on which the work for machines was “laid out” according to the time required to do it. The Gantt Progress Chart, as developed in this early form, was found to help in the making of definite plans and to be highly effective in getting those plans executed. The rate at which the work goes forward is continuously compared with the advance of time, which induces action to accelerate or retard that rate. These charts are not static records of the past – they deal with the present and future and their only connection with the past is with respect to its effect on the future.

General Crozier quickly grasped the possibilities of this chart in helping to fix responsibility for action or lack of action and had it introduced in various branches of the Ordnance Department. During 1918, these charts were used in the United States arsenals, in the production of naval aircraft, and in other government work, such as that of the Emergency Fleet, the Shipping Board, etc.”

From “The Gantt Chart, A Working Tool of Management” by Wallace Clark (1922) :

From “The Gantt Chart, A Working Tool of Management” by Wallace Clark (1922) :

From “The Gantt Chart, A Working Tool of Management” by Wallace Clark (1922) :

From “The Gantt Chart, A Working Tool of Management” by Wallace Clark (1922) :

From “The Gantt Chart, A Working Tool of Management” by Wallace Clark (1922) :

From “The Gantt Chart, A Working Tool of Management” by Wallace Clark (1922) :

Henry Gantt – a brief biography of the creator of the Gantt chart

Henry Gantt was born in Calvert County, Maryland on May 20, 1861 to Virgil Gantt and Mary Jane Steuart Gantt. He was the 4th child born into the family but unfortunately at the time of his birth he had only one living sibling, a sister (Margaret Heighe Gantt).  Two other babies, a boy (Thomas) and a girl (Susie) did not survive infancy.  At the time Henry Gantt was born, his family owned a plantation and a number of slaves. A month before he was born (April 12, 1861), the American Civil War began. Undoubtedly the start to his life was chaotic and full of hardship as were the lives of many southerners at the time. As a result of the Civil War, his family lost their plantation (and enslaved people) and ended up moving to Baltimore, Maryland.

His parents were strong believers in the value of education, as they pushed Henry to finish his secondary education at McDonogh School Baltimore in 1978. Today McDonogh School is a private, coeducational K-12 college prep school. At the time, the school was a all-white, semi-military school for orphan boys. The boys, including Henry worked on the farm in exchange for their tuition, room and board. Again, due to the family’s hardships following the war, one can surmise that this was a good option for getting an education.

After graduating from McDonogh, Henry Gantt went on to Johns Hopkins University to study engineering. He graduated in just two years (1980) and then went back to McDonogh School to teach for 3 years. He went on to get a Masters of Engineering degree in Mechanical Engineering at Stevens Institute of Technology in New Jersey.

Henry Gantt married Mary Eliza Snow of Fitchburg, Massachusetts on November 29, 1899.

In 1884, Gantt began working as a draftsman at Poole & Hunt (an Baltimore iron foundry and machine-shop). The foundry employed over 700 workers and manufactured turbines, boilers, looms for the textile mills, transmission equipment for cable cars and even structural elements for the United States Capitol building. They also made the derricks, steam engines and lifting equipment for construction of the Capitol.

In 1887 he joined Frederick W. Taylor in applying scientific management principles to the work at Midvale Steel and Bethlehem Steel, working there with Taylor until 1893.

In his later career as an industrial consultant and following the invention of the Gantt chart, he designed the ‘task and bonus’ system of wage payment and additional measurement methods worker efficiency and productivity. In 1908-09 he undertook projects at Joseph Bancroft & Sons Company and Williams & Wilkins.

In 1916, the Ashbury Park Press reported on April 20, 1916 :

Henry Laurence Gantt of Montclair, from the American Society of Mechanical Engineers, is a consulting engineer who was born in Maryland in 1861, educated at Stevens Institute of Technology and Johns Hopkins University, holding two degrees, and is a member of the Society of Naval Architects and Marine Engineers. He and several other engineers were named as directors by The US Naval Consulting Board. These engineers were to conduct a first-ever survey of American Manufacturing.

His obituary states:

Henry Laurence Gantt, one of the foremost industrial engineers of America and author of books on engineering, died suddenly Sunday evening  at his home in Montclair, of heart failure due to an attack of indigestion.

Mr. Gantt was born in Maryland in 1861 and was educated in Baltimore.  In association with the late Frederick W. Taylor, Mr. Gantt took a prominent part in the pioneer work done at the Midvale Steel Company’s plant.  During the war e developed a new method, thus assisting in the rapid production of war materials.

He was a member of the American Society of Mechanical Engineers, the Society of Naval Architects and Marine Engineers, the Engineers’ and the Machinery clubs of New York.

Another obituary states:

Henry Laurence Gantt, an industrial engineer of national reputation, died Sunday evening at his home in Montclair, New Jersey, after an attact of indigestion. He was 57 years old.

Mr. Gantt received the degree of Bachelor of Arts at Johns Hopkins University in 1880, and later toook a course in mechanical engineering at the Stevens Institute of Technology. In association with the late Frederick W. Taylor, he helped to install modern methods of manufacture at the plant of the Midvale Steel Company and other large industrial establishments

During the war, as production adviser to the government, he developed a new method for the rapid production of war materials.

Mr. Gantt was the author of “Work Wages and Profits,” “Industrial Leadership,” and “Organizing for War Work.” as well as a number of articles in technical journals.

He was a member of the American Society of Mechanical Engineers, the Society of Naval Architects and Marine Engineers, the Engineers’ Club, the Machinery Club, the American Geographic Society and the Beta Theta Pi fraternity.

The Gantt Medal, established in 1929, memorializes the achievements and service to the community by Henry Laurence Gantt.

Henry Gantt and his wife had 1 daughter, Margaret Heighe Gantt. She became a physician. Her son, Laurence Gantt Taber graduated with a master of Science degree from Stevens Institute of Technology, the same college his grandfather attended. Consulting must run in the family, as Laurence became a computer consultant for Union Carbide.

In 1884, Gantt began working as a draftsman at Poole & Hunt (an Baltimore iron foundry and machine-shop). The foundry employed over 700 workers and manufactured turbines, boilers, looms for the textile mills, transmission equipment for cable cars and even structural elements for the United States Capitol building. They also made the derricks, steam engines and lifting equipment for construction of the Capitol.

The Gantt Medal, established in 1929, memorializes the achievements and service to the community by Henry Laurence Gantt.

Hoover Dam – Pat Tillman Bridge

This Bronze Gantt chart can be seen on the Mike O’Callaghan-Pat Tillman Memorial Bridge, also called the Hoover Dam Bypass.