What shape does a bowstring truss feature in its roof assembly?

A bowstring truss is characterized by its unique design, which includes a curved or arched top chord combined with a horizontal bottom chord. This design is effective in providing strength and support while allowing for large open spaces beneath the truss, making it a popular choice for structures like gymnasiums and auditoriums. The curvature of the top chord efficiently distributes loads across the truss, enhancing its structural integrity. The horizontal bottom chord serves as a stabilizing feature, connecting the two ends of the truss together. This shape is specifically engineered to manage both vertical and lateral forces, making it suitable for various construction applications.