Dollar coins have never been very popular in the United States since the removal of specie coins from circulation. Despite efforts by the government to promote their use, such as the Presidential $1 Coin Program, most Americans currently use the one-dollar bill rather than dollar coins.
Width and Height. An interior passage door is any door that you use to move from one room to another, and the code requires these to be 80 inches in height. Because this corresponds to 6 feet 8 inches, door manufacturers refer to this as a 6/8 door.
Most local codes require any door in a public or newly constructed building to be at least 6 feet and 8 inches high (2032 mm.) Additionally, a door accessible to those with disabilities must not require a push greater than 5 pounds-force (22.2 Newtons), applied at 30 inches from the hinge, in order to open the door.