A Double Tee is a type of precast concrete structural element commonly used in the construction of floors and roofs. It is named for its distinctive shape, which resembles two "T" shapes joined together at the top. The double tee has a wide, flat top flange that provides stability and a deep web in the middle that connects the two flanges. This design allows for efficient load distribution and the ability to span long distances with minimal support.

Double tees are typically used in large commercial, industrial, and parking structure buildings, as they offer several benefits, including:

• High Load-Bearing Capacity: The design allows for the efficient transfer of loads, making them ideal for heavy-duty applications.

• Long Spans: Due to their strength, double tees can be used to span large distances without the need for intermediate support columns.

• Speed of Construction: As precast elements, double tees are manufactured off-site and then transported to the construction site, reducing on-site labor and construction time.

• Durability: Made from reinforced concrete, double tees are resistant to environmental factors, making them durable and long-lasting.