building bar
7.The whole building can be equivalent to a cantilever bar, and the structural total displacements can be divided into parallel displacement and rotational displacement based on the harmonize condition of displacement, and the parallel shear and the rotational shear of the elements can be accordingly obtained by selecting the renegade body from top to bottom in turn.
8.The detection for concrete column cracking of a dwelling building by detecting chlorine ion in the concrete, concrete cover thickness and degree of steel-bar corrosion was completed.
