The results of the current studies can be helpful for the design and construction of this type of structure. However, due to the semi-rigid characteristic of the top chord joints, the finite element analyses cannot give a close prediction for the maximum elastic deformations of the post-tensioned and shaped steel domes. The extent of the maximum elastic deformation of a posttensioned and shaped steel structure is determined by the strength of the top chords and their joints. The test results of the three post-tensioned and shaped domes have shown that a necessary condition to form a desired space shape from a planar layout with low joint stiffnesses is that the movements of all the existing mechanisms must be effectively controlled as indicated by the finite element analysis. With a revised post-tensioning method, the third dome obtained the theoretical prediction. It is found that the first two test domes did not furnish a part-spherical shape as predicted by finite element analyses, because the movements of some mechanisms were not controlled sufficiently. The results of the shape formation tests and finite element analyses are reported in this paper. Joist Hanger 95 x 165 1606 Cadimage Joist Hangers. Joist Hanger 70 x 180 1608 Cadimage Joist Hangers.

Joist Hanger 47 x 90 1612 Cadimage Joist Hangers. Joist Hanger 47 x 120 1610 Cadimage Joist Hangers. Fachwerktrger 1,00x0,50x2,00m Pre-Rig Truss.

Based on previous studies on this shape formation principle, three post-tensioned and shaped steel domes have been constructed. 3DMD Al Truss Tower 3DMD Library Aluminum Truss (demo) Truss 3. Conventional trusses, steel segments utilized are longer compared to Space frame. The post-tensioned and shaped steel domes, assembled initially at ground level in an essentially flat condition, are shaped to a curved space form and erected into the final position by means of a posttensioning technique. Macroscopically, a space frame often takes the form of a flat or curved. This paper concerns studies on the shape formation of post-tensioned and shaped steel domes.

Curved space truss