Percy Pennybacker

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P. V. Pennybacker Percy Pennybacker.jpg
P. V. Pennybacker

Percy V. Pennybacker Jr. (1895–1963) was a Texas civil engineer who pioneered the technology of welded structures, particularly for bridges.

Texas State of the United States of America

Texas is the second largest state in the United States by both area and population. Geographically located in the South Central region of the country, Texas shares borders with the U.S. states of Louisiana to the east, Arkansas to the northeast, Oklahoma to the north, New Mexico to the west, and the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the southwest, while the Gulf of Mexico is to the southeast.

Civil engineer engineer specialising in design, construction and maintenance of the built environment

A civil engineer is a person who practices civil engineering – the application of planning, designing, constructing, maintaining, and operating infrastructures while protecting the public and environmental health, as well as improving existing infrastructures that have been neglected.

Bridge structure built to span physical obstacles

A bridge is a structure built to span a physical obstacle, such as a body of water, valley, or road, without closing the way underneath. It is constructed for the purpose of providing passage over the obstacle, usually something that can be detrimental to cross otherwise. There are many different designs that each serve a particular purpose and apply to different situations. Designs of bridges vary depending on the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, the material used to make it, and the funds available to build it.

Contents

Professional success

Pennybacker worked for the Texas Highway Department in the early 1900s designing bridges. He earned his civil engineering degree from the University of Texas at Austin. He served as a captain in the Army Air Service during World War I. After the war, he worked in Kansas and Texas. During World War II, he became interested in welded construction as an alternative to rivets. By promoting the use of welding for heavy stress bridge design, he is credited with saving the state of Texas millions of dollars.

University of Texas at Austin public research university in Austin, Texas, United States

The University of Texas at Austin is a public research university in Austin, Texas. It was founded in 1883 and is the flagship institution of the University of Texas System. The University of Texas was inducted into the Association of American Universities in 1929, becoming only the third university in the American South to be elected. The institution has the nation's eighth-largest single-campus enrollment, with over 50,000 undergraduate and graduate students and over 24,000 faculty and staff.

United States Army Air Service 1918-1926 air warfare service of the United States Army

The United States Army Air Service was the aerial warfare service of the United States between 1918 and 1926 and a forerunner of the United States Air Force. It was established as an independent but temporary branch of the U.S. War Department during World War I by two executive orders of President Woodrow Wilson: on May 24, 1918, replacing the Aviation Section, Signal Corps as the nation's air force; and March 19, 1919, establishing a military Director of Air Service to control all aviation activities. Its life was extended for another year in July 1919, during which time Congress passed the legislation necessary to make it a permanent establishment. The National Defense Act of 1920 assigned the Air Service the status of "combatant arm of the line" of the United States Army with a major general in command.

World War I 1914–1918 global war originating in Europe

World War I, also known as the First World War or the Great War, was a global war originating in Europe that lasted from 28 July 1914 to 11 November 1918. Contemporaneously described as "the war to end all wars", it led to the mobilisation of more than 70 million military personnel, including 60 million Europeans, making it one of the largest wars in history. It is also one of the deadliest conflicts in history, with an estimated nine million combatants and seven million civilian deaths as a direct result of the war, while resulting genocides and the 1918 influenza pandemic caused another 50 to 100 million deaths worldwide.

When he retired from the Texas Highway Department, he worked another three years for the city of Austin as a civil engineer.

He was honored as "Outstanding Engineer" by the Texas Society of Professional Engineers, was a member of the American Society of Civil Engineers, and brought the American Welding Society to Austin.

American Society of Civil Engineers professional association

The American Society of Civil Engineers (ASCE) is a tax-exempt professional body founded in 1852 to represent members of the civil engineering profession worldwide. Headquartered in Reston, Virginia, it is the oldest national engineering society in the United States. Its constitution was based on the older Boston Society of Civil Engineers from 1848.

Childhood

His father, also Percy V. Pennybacker, and mother Anna (née Hardwicke) Pennybacker married in Tyler, Texas in 1884. Percy junior was born in Palestine, Texas and was one of four children. His father, a school superintendent, suffered from diabetes and died of the disease in 1899 while Percy was young. Like his father, Percy too suffered from diabetes. After spending a year in the hospital as a young civil engineer, he became one of the first patients treated with insulin. His mother Anna, and educator and activist [1] wrote and published A New History of Texas for Schools, which was adopted by the Texas Legislature for use in public schools from 1898 through 1913. [2] The family moved from Palestine to Austin in 1900.

Tyler, Texas City in Texas, United States

Tyler is the county seat of Smith County, located in east-central Texas, United States. The city of Tyler has long been Smith County's major economic, educational, financial, medical, and cultural hub. The city is named for John Tyler, the tenth President of the United States. Tyler had a population of 96,900 in 2010, according to the United States Census Bureau, and Tyler's 2017 estimated population was 104,991. It is 100 miles (160 km) east-southeast of Dallas. Tyler is the principal city of the Tyler Metropolitan Statistical Area, which had a population of 209,714 in 2010, and is the regional center of the Tyler-Jacksonville combined statistical area, which had a population of 260,559 in 2010.

Palestine, Texas City in Texas, United States

Palestine is a city in and the county seat of Anderson County in Texas, United States. As of the 2010 census, the city population was 18,712. Palestine was named for Palestine, Illinois, by preacher Daniel Parker. Another source says that it was named by migrant Micham Main for the same hometown.

Insulin Hormone in vertebrates

Insulin is a peptide hormone produced by beta cells of the pancreatic islets; it is considered to be the main anabolic hormone of the body. It regulates the metabolism of carbohydrates, fats and protein by promoting the absorption of carbohydrates, especially glucose from the blood into liver, fat and skeletal muscle cells. In these tissues the absorbed glucose is converted into either glycogen via glycogenesis or fats (triglycerides) via lipogenesis, or, in the case of the liver, into both. Glucose production and secretion by the liver is strongly inhibited by high concentrations of insulin in the blood. Circulating insulin also affects the synthesis of proteins in a wide variety of tissues. It is therefore an anabolic hormone, promoting the conversion of small molecules in the blood into large molecules inside the cells. Low insulin levels in the blood have the opposite effect by promoting widespread catabolism, especially of reserve body fat.

Non-professional life

He married Mary Alice. An Episcopalian, he helped found St. George's Episcopal Church in Austin.

Recognition

The iconic Pennybacker Bridge (a.k.a. the "360 bridge") in Austin, Texas is named in his honor.

Pennybacker Bridge Bridge that crosses through Austin, TX.

The Percy V. Pennybacker Jr. Bridge in Austin, Texas, is a through-arch bridge across Lake Austin which connects the northern and southern sections of the Loop 360 highway, also known as the "Capital of Texas Highway." The road is widely considered one of the most scenic urban drives in Texas, in large part due to this arched weathering-steel bridge and the rolling hills that flank the road. In 2001, 48,000 vehicles crossed the bridge daily. Ten years prior to this, 22,000 vehicles had crossed the bridge daily.

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