What is the height of the upright on a football goal post?

"Goal posts must be single-standard type, offset from the end line and painted bright gold. The goal posts must be 18 feet, 6 inches wide and the top face of the crossbar must be 10 feet above the ground. Vertical posts extend at least 30 feet above the crossbar. A ribbon 4 inches by 42 inches long is to be attached to the top of each post. The actual goal is the plane extending indefinitely above the crossbar and between the outer edges of the posts."

http://www.nfl.com/rulebook/field

football is a game played with your feet......

the height of the upright.i.e; goalpost is 8Ft

some numpties will say this is soccer........that proves just why they are numpties