fagverk

Fagverk, or lattice work, is a structural framework made from straight members connected at joints to form a network of triangles. This triangulated arrangement provides rigidity and distributes loads efficiently, enabling long spans with relatively light members. The term comes from Norwegian, meaning “lattice work.”

Historically, fagverk has been used in bridges, towers, and roofs, especially in 19th- and early 20th-century iron, steel, and timber construction. In modern infrastructure, lattice patterns are still employed in some transmission towers and certain architectural features, where the visual quality of the lattice is also valued.

Construction and patterns rely on triangular units to resist deformation. Joints may be pinned in traditional timber or iron constructions, while contemporary implementations often use bolted or welded connections. Common truss patterns within fagverk include Warren, Pratt, and Howe, each organizing members into repeating triangles to balance tension and compression forces.

Materials used for fagverk range from wood to wrought iron and steel, with steel lattice work being predominant in many modern applications. Advantages of fagverk include a high stiffness-to-weight ratio, efficient material use, and suitability for long spans with slender members. Disadvantages involve the need for precise fabrication and assembly, critical joint performance, and maintenance considerations such as corrosion or fatigue in metal lattices.

Overall, fagverk remains a classic solution in structural engineering for enabling long spans and tall structures, combining mechanical efficiency with the aesthetic appeal of a visible lattice framework.