Which structural design is known for its lightweight characteristics and curved top chord?

The bowstring truss is recognized for its distinctive design featuring a curved top chord. This curved shape allows the truss to effectively distribute weight across its structure, making it particularly beneficial for spanning large areas with minimal support. The lightweight characteristics of the bowstring truss are achieved through its design, which utilizes less material while still maintaining structural integrity. This efficiency in material use not only reduces the overall weight of the truss but also contributes to faster and easier construction processes. In addition, the arch-like shape of the bowstring truss provides additional strength by enhancing its ability to resist forces from different angles, making it well-suited for various applications, including roofs of large buildings, auditoriums, and warehouses.