This paper puts forward the point of view that a three-stage working style is the basic behavior of RC and PC structures. To determine the limit value of the axial compression ratio for S.R.C. columns, the paper discusses why the yielding of the tensile steel bars at the lateral side is the basis of balance failure . The paper defines the shear wall with short piers that belongs to the shear wall with combined piers, if the wall thickness is not less than 200 mm, the cross section depth of piers is as small as possible and it can satisfy a <10, In/I <ζ. Meanwhile the paper calls the...
