(1)  In locations where the seismic spectral response acceleration, S_a(0.2), is greater than 0.55, loadbearing elements of masonry buildings more than 1 storey in building height shall be reinforced with not less than the minimum amount of reinforcement as required in Subsection 9.20.15.

    (2)  In locations where the seismic spectral response acceleration, S_a(0.2), is greater than 0.35, but less than or equal to 0.55, loadbearing elements of masonry buildings 3 storeys in building height shall be reinforced with not less than the minimum amount of reinforcement as required in Subsection 9.20.15.

Article 9.20.1.2 Ontario Regulation 332/12 Building Code,   Information published by oncodes.ca for educational purposes only.