All are invited to the National City Middle School Prop O Modernization Project 2 Topping Out Ceremony on Wednesday April 16, 2014 at National City Middle School. A topping-out ceremony is a traditional construction milestone where the contractor and owner celebrate placing the last piece of structural steel (usually the highest piece) on the project. While the piece placed may not be the actual last piece of steel, the ceremony is still held to commemorate meeting this milestone. Meanwhile a lot of other work is still in progress such as constructing walls and installing utilities. History of Topping Out Ceremonies