Space frame

The roof of this industrial building is supported by a space frame structure.
If a force is applied to the blue node and the red bar were not present, the resultant effect on the structure would depend entirely on the blue node's bending rigidity, i.e. to its resistance (or lack thereof) to bending; however, with the red bar in place, then assuming negligible bending rigidity of the blue node as compared with the red bar's contributing rigidity, this 3-dimensional load-bearing truss structure could be solved using a rigidity matrix (neglecting angular factors).

In architecture and structural engineering, a space frame or space structure (3D truss) is a rigid, lightweight, truss-like structure constructed from interlocking struts in a geometric pattern. Space frames can be used to span large areas with few interior supports. Like the truss, a space frame is strong because of the inherent rigidity of the triangle; flexing loads (bending moments) are transmitted as tension and compression loads along the length of each strut.

Chief applications include buildings and vehicles.


Space frames are strong, adaptable, and efficient buildings that can support a variety of weights. For their effective implementation in construction, it is important to comprehend their behavior under various loads, probable modes of failure, and rules for optimal arrangement. To maximize space frames' performance and longevity, proper design, material selection, and joint integrity are essential.