ABSTRACT
The usage of the force method in engineering is limited by dimensionality of the problem: even relatively simple design schemes usually have a degree of static indeterminacy of about 10 or greater, which could make manual calculation impossible. The framework is formed by identical planar two-tiered frames located in rows one after another. The problem of decomposition is sometimes solved by a lucky choice of primary system and corresponding assemblage of redundant forces, but more often, it can be solved only after introduction of a primary system. In graphic-analytical analyses by the force method, errors often arise in the course of the diagrams’ multiplication. When the shear forces at the ends of a member have been determined, it is not difficult to construct the profile of shear forces on this member by using the same rules of construction that are employed for beams.
