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// CODE SNIPPET

2106.5 Additional Requirements for Structures in Seismic Design Category D

2010 Building Code of NY > 21 Masonry > 2106 Seismic Design > 2106.5 Additional Requirements for Structures in Seismic Design Category D
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Structures assigned to Seismic Design Category D shall conform to the requirements of Section 2106.4, Section 1.14.6 of ACI 530/ASCE 5/TMS 402 and the additional requirements of this section.

2106.5.1 Loads for Shear Walls Designed by the Working Stress Design Method

When calculating in-plane shear or diagonal tension stresses by the working stress design method, shear walls that resist seismic forces shall be designed to resist 1.5 times the seismic forces required by Chapter 16. The 1.5 multiplier need not be applied to the overturning moment.

2106.5.2 Shear Wall Shear Strength

For a shear wall whose nominal shear strength exceeds the shear corresponding to development of its nominal flexural strength, two shear regions exist.

For all cross sections within a region defined by the base of the shear wall and a plane at a distance Lw above the base of the shear wall, the nominal shear strength shall be determined by Equation 21-1.

Vn = An ρn fy (Equation 21-1)

The required shear strength for this region shall be calculated at a distance Lw /2 above the base of the shear wall, but not to exceed one-half story height.

For the other region, the nominal shear strength of the shear wall shall be determined from Section 2108.

Related Code Sections


2106.5 Masonry, Additional Requirements for Structures in Seismic Design Category D
Structures assigned to Seismic Design Category D shall conform to the requirements of Section 2106.4, Section 1.14.6 of ACI 530/ASCE 5/TMS 402 ...
2010 Building Code of NY > 21 Masonry > 2106 Seismic Design > 2106.5 Additional Requirements for Structures in Seismic Design Category D
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2010 Building Code of NY > 18 Soils and Foundations > 1805 Footings and Foundations > 1805.9 Seismic Requirements
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