Thesis
Structural performance of light-frame shear walls with simulated decay and a repair design
Washington State University
Master of Science (MS), Washington State University
07/2017
Handle:
https://hdl.handle.net/2376/100971
Abstract
Traditionally, timber is a primary building material used in the Pacific Northwest. One key to durability of timber buildings is proper detailing of the envelope. Timber structures must be designed to allow correct drainage and ventilation of moisture. Otherwise, timber structures are at high risk for fungal decay. Shear walls are an important component in a timber structure to resist lateral loads from wind and earthquakes. Lost strength and stiffness of shear walls is a common issue that happens in many residential buildings caused by deteriorating sheathing. Limited research has been done on topics associated with fungal decay isolated in the bottom section of a shear wall. Erin Anderson et al. (2007) researched simulated decay on modeled shear walls based on leaky windows. To simulate decay in the models, nail capacity data was based on experimental nail connection tests introduced with decay. To understand the severity of decay, for the experiments done for the research reported herein, decay was simulated by omitting the bottom 12 inches of nails from the shear walls resembling non-functioning sheathing. In addition, this research included a repair design. Sheathing was cut at 2 feet and (2) new 2-by-4 feet panels were added to the bottom 2 feet. The simulated decayed shear walls lost close to or more than half the capacity compared to a control shear wall. The repair design shown to restore the lost shear capacity as compared with the control group. The failure modes did not change between the control and repair groups even with a stiffer system. The repair design was able to pass Acceptance Criteria 130 for wood paneled products.
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Details
- Title
- Structural performance of light-frame shear walls with simulated decay and a repair design
- Creators
- Beth Diana Weiss
- Contributors
- Donald A. Bender (Chair)James D Dolan (Committee Member) - Washington State University, Civil and Environmental Engineering, Department ofVikram Yadama (Committee Member) - Washington State University, Civil and Environmental Engineering, Department of
- Awarding Institution
- Washington State University
- Academic Unit
- Civil and Environmental Engineering, Department of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; [Pullman, Washington] :
- Number of pages
- 164
- Identifiers
- 99900525291401842
- Language
- English
- Resource Type
- Thesis