Both the plain wall and wall with openings were modified to include various arrangements of strengthening. Proposed dispositions of reinforcement included horizontal through individual block courses, vertical at the ends of the wall and end
diagonal. Combinations of these patterns have also been considered. The reinforcement is fully bonded along its length. The reinforcement is introduced into the wall using the retrofitted reinforced masonry support system. All dispositions of
reinforcement investigated used single 20mm diameter (#6 bar) ribbed bars installed in 50mm (2in) diameter holes. The anchors are designed not to be deliberately stressed but attract load during a seismic event. The modelled anchors permit
recovery of bond stresses, axial stresses and slippage along the length of the anchor at any time during loading. Table 2 shows the various wall and reinforcement arrangements that were the subject of the investigation. Figure 6 shows a typical
model including DE boundaries (bold), finite element subdivisions (fine) and modelled reinforcement (bold).
