How much does the Rotunda Dome weigh?

Answer before: 15,000 pounds

There is NO WAY that dome could only weigh 15,000 pounds. I actually went to Washington D.C. and i went inside the Capitol Building and a guy that worked there told me that the dome weighs 9,000,000 pounds. I know it sounds crazy, but its true.

9,000,000 is close, but it actually weighs 8,909,200 pounds.