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A108.2 Masonry Shear Strength
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The unreinforced masonry shear strength, vm, shall be determined for each masonry class from one of the following equations:
- The unreinforced masonry shear strength, vm, shall be determined by Equation A1-4 when the mortar shear strength has been determined by Section A106.3.3.1.
The mortar shear strength values, vt, shall be determined in accordance with Section A106.3.3. - The unreinforced masonry shear, vm, shall be determined by Equation A1-5 when tensile-splitting strength has been determined in accordance with Section A 106.3.3.2, Item 1 or 2.
- When f'm has been estimated by categorization of the units and mortar in accordance with Section 2105.1 of the International Building Code, the unreinforced masonry shear strength, vm, shall not exceed 200 pounds per square inch (1380 kPa) or the lesser of the following:
For SI: 1 psi = 6.895 kPa
where:
v = 62.5 psi (430 kPa) for running bond masonry not grouted solid. v = 100 psi (690 kPa) for running bond masonry grouted solid. v = 25 psi (170 kPa) for stack bond grouted solid.
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