ABSTRACT
This program is intended for the static analysis of three-dimensional rigid-jointed space frames. As most of the problems in this class of structure are large, it was found necessary to write the program in a more sophisticated style to that adopted for the programs in earlier chapters. For example, in the solution of the simultaneous equations the stiffness matrix was not inverted. Instead, its properties of banding and symmetry were adopted, so that it was only necessary to store the upper half of the stiffness matrix within the band width containing non-zero elements, and solve the resulting simultaneous equations through triangulation.
