Warrentruss

Warrentruss is a term occasionally used to describe a triangulated load-bearing truss configuration similar to the Warren truss, though it is not a standard designation in most engineering codes. In its generic sense, a Warrentruss consists of a pair of parallel chords joined by a sequence of diagonal members that form repeating triangles along the span. The diagonals typically alternate between leaning to the upper and lower chord, creating a light and efficient lattice that carries vertical loads primarily in axial forces, reducing bending moments.

Design and variants: A Warrentruss may be specified with uniform panel lengths and may include verticals at panel points to increase stiffness or adapt to local load conditions. Materials range from timber to steel or light-gauge metals in modular assemblies. Typical applications include bridge decks, roof framing, and portal frames in industrial buildings, where simplicity of fabrication and ease of on-site assembly are valued.

Advantages and limitations: The Warren-type arrangement offers good material efficiency and straightforward fabrication, with predictable axial stresses. Adding verticals can improve stiffness but introduces additional joints and potential points of weakness. Limitations include sensitivity to support conditions and potential higher shear at joints under asymmetrical loading.

Origin and usage: The term Warrentruss appears most often in informal literature or regional dialects of engineering practice and is sometimes used interchangeably with the Warren truss. For standard references, engineers typically refer to Warren truss or to other truss types such as Pratt or Howe. See also: Warren truss, Pratt truss, Howe truss.