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Public Domain Picture: Under pressure

By: U.S. Air Force photo/Senior Airman Julianne Showalter, Courtesy: US Air Force
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Under pressure
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Under pressure
Twenty-pound concrete cylinder samples are taken from various construction locations around base are tested to ensure the concrete can withstand the pressure of 6,000 pounds per square inch for flightline uses and 4,500 psi for building foundations Feb. 21 at Balad Air Base, Iraq. These tests confirm aircraft or buildings can be put on concrete surfaces without the concrete cracking or sinking. The cylinders are cured for 24 hours and then placed in a water bath for seven days before putting them though a strength test machine. On Feb. 21, a sample from the new Housing 6 area shoppette was tested and passed the strength test.
U.S. Air Force photo/Senior Airman Julianne Showalter
Date Added:
October 19, 2012
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Produced by United States Government
The file available on this page is a work of the United States government. A work of the United States government, as defined by United States copyright law, is "a work prepared by an officer or employee of the U.S. government as part of that person's official duties." In general, under section 105 of the Copyright Act, such works are not entitled to domestic copyright protection under U.S. law.
US Air Force

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US Air Force
External Site: US Air Force
World War II had been over for two years and the Korean War lay three years ahead when the Air Force ended a 40-year association with the U.S. Army to become a separate service. The Department of the Air Force was created when President Harry S Truman signed the National Security Act of 1947.
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