Roof Truss Nodes

Warren trusses are commonly used in long span buildings ranging from 20 to 100 m in span.

Roof truss nodes.

A horizontal cut to the bottom of a sloping bottom chord usually the width of the bearing i e. These trusses are most often used as the roof trusses. Space frame truss contrast to planar truss the members and the nodes are located in the three dimensional space. A modified warren truss may be adopted where additional members are introduced to provide a node at for example purlin locations.

Roof trusses are created by attaching the ends of members to joints known as nodes. Structural support of trusses usually walls normally with a timber wall plate. A planar truss is one where all members and nodes lie within a two dimensional plane while a space truss has members and nodes that extend into three dimensions. A roof truss is a triangular wood structure that is engineered to hold up much of the weight of the rest of the roof.

Although this rigorous definition allows the members to have any shape connected in any stable configuration trusses typically comprise five or more triangular units constructed with straight members whose ends are connected at joints referred to as nodes. The highest point on a truss where the sloping top chords meet. The straight lengths of wood known as members that roof trusses built with are connected with intersections that distribute the weight evenly down the length of each member. If all the members and the nodes are in a planar surface then this truss is a planar truss.

Planar truss as the name implies it is a two dimensional truss. A slight vertical cut usually less than 75mm at the. This type of truss is also used for the horizontal truss of gantry crane girders. Bearing cut or seat cut.

The top beams in a truss are called top chordsand are typically in compression the bottom beams are called bottom chords and are typically in tension.