Abstract: Two types of free‐standing stairs, each having an axis that makes a 180° turn in plan, are considered. In the first, the horizontal projection of the axis consists of a central semicircle and two equal straight parts, and ...

Abstract: The full, 12×12, stiffness matrix of a free‐standing helicoidal stair is constructed in terms of its geometric characteristics. Knowledge of this stiffness matrix allows incorporation of the stair as a single element into ...

Abstract: New reinforced concrete (RC) walls are popular in seismic rehabilitation of RC buildings as they reduce seismic-deformation demands. Their effectiveness was experimentally investigated by pseudodynamically testing

Abstract: Twelve identical cantilever-type column specimens were subjected to load paths of cyclic uniaxial or biaxial flexure with axial load, to provide data for the development and calibration of mathematical models of columns ...