SD-Lecture61-What-is-a-Shear-Wall

SD-Lecture61-What-is-a-Shear-Wall - CEG CEG-5065C Soil...

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Unformatted text preview: CEG CEG-5065C Soil Dynamics 5065C Soil Dynamics Lecture 61 Lecture 61 What is a Shear Wall? Luis Prieto-Portar 2009 This photograph of a simple wood shear wall for a residence, is designed to resist seismic loads in a northern California site. Consider a 12 long by 8 high stud wall sitting on a concrete slab. A stud wall is built from 2x 4 wooden or steel studs placed every 16 on center, with 2x 4 pieces at the top and the bottom. The studs are secured with toe-nailing 10d nails @ 30. Consider now the application of a large horizontal load of 1,000 lbs to the stud wall, due to wind or seismic loads. 1000 lbs The shear wall will rack and some nails are pulled out. 1,000 lbs The dotted lines represents the original structure As the load is continually applied, the stud frame racks more and more until it collapses. 1,000 lbs Eventually, the stud wall collapses, as in this California house. Now reinforce the structure with 4 x 8 sheets of plywood or drywall ....
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SD-Lecture61-What-is-a-Shear-Wall - CEG CEG-5065C Soil...

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