EK684
Lateral stability in two orthogonal directions should be provided by a system of strongpoints within the structure so as to produce a braced non-sway structure, which is stiff enough that […]
Lateral stability in two orthogonal directions should be provided by a system of strongpoints within the structure so as to produce a braced non-sway structure, which is stiff enough that […]
A system composed of several rectangular tubes forcing the innercolumns to interact with the facades where each tube is ended at differentheight in the building so that the influence of […]
Individual columns are often assumed to provide little or none stability, however, a system of columns interacting in one plane can be considered to act as a stabilizing system.
A rule used by some designers that has proved satisfactory is to design the brace for 2% of the axial load of columns, or 2% of the total compressive stress […]
As frame deforms under increasing load, changes in geometry may induce additional second order moments within members. These changes in geometry may be due to the movement at the ends […]
Ring girder resists unbalanced shears and transmits normal forces to columns below.
Where the concentrated loads are very large, walls may need to be reinforced with pilasters. Pilasters are essentially columns and carry the large concentrated loads directly to the footing. The […]
Euler equation has validity only with perfectly straight columns, free of residual stresses, loaded at the centre of gravity and knife-edge supports.
With framing systems, consisting of braced frames with rigidly jointed members or unbraced frames (sway frames) with flexibly jointed members, or unbraced (sway) frames with rigidly jointed members, or frames […]
For heavily-loaded columns or those carrying large moments resulting in high compressive forces the bedding should be fine concrete using a maximum aggregate of 10 mm size and a water-cement […]
The reason for the high shear (which is the slope of the bending moment diagram) in the external columns of rigid frames is illustrated, where the bending moment diagram for […]
Rigidly-jointed frames, or sway frames, are those with full moment resisting connections between beam and columns.
Isolation joints around columns should be either circular or diamond shaped. If no isolation joints are used around columns, or if the corners of the isolation joints do not meet […]
In rectangular frames with simple flexible joints the moment transfers between beams and columns may be ignored.
Although the rigid frame structure has a tube-like form, its behavior is much more complex than that of a solid tube. Unlike a solid tube, it is subjected to the […]
The total lateral deflection of a rigid frame may be considered a combination of the following: Cantilever deflection due to axial deformation of columns (15% – 20%). Frame shear racking […]