The S-IC-T stage (static firing stage) is installed and awaits the first static firing of all five F-1 engines at the Marshall Space Flight Center S-IC static test stand. Constructed in 1964, the S-IC static test stand was designed and constructed to develop and test the first stage of the Saturn V launch vehicle that used five F-1 engines. Each F-1 engine developed 1,500,000 pounds of thrust for a total liftoff thrust of 7,500,000 pounds. To handle this research and development effort, the stand contains 12,000,000 pounds of concrete on its base legs that are planted down to bedrock 40 feet below ground level. Of concrete and steel construction, the stand foundation walls are 4 feet thick, and topped by a crane with a 135-foot boom. With the boom in the up position, the stand is given an overall height of 405 feet, placing it among the highest structures in Alabama at the time.