Problem 6 Two walls are coupled by two coupling beams. Under earthquake loading, the walls rock about their corners and undergo lateral displacement corresponding to a drift ratio 0=0.02. Assuming the walls to be rigid, calculate the chord rotation angle a that the coupling beams must go through. 20' 10 20 coupling beams 12 walls 12 (a) undeformed shape (b) deformed shape

Problem 6 Two walls are coupled by two coupling beams. Under earthquake loading, the walls rock about their corners and undergo lateral displacement corresponding to a drift ratio 0=0.02. Assuming the walls to be rigid, calculate the chord rotation angle a that the coupling beams must go through. 20' 10 20 coupling beams 12 walls 12 (a) undeformed shape (b) deformed shape