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  Volume 4, Number 3, July 2019 , pages 251-272

Comparison of structural foam sheathing and oriented strand board panels of shear walls under lateral load
Shideh Shadravan, Chris C. Ramseyer and Royce W. Floyd

    This study performed lateral load testing on seventeen wood wall frames in two sections. Section one included eight tests studying structural foam sheathing of shear walls subjected to monotonic loads following the ASTM E564 test method. In this section, the wood frame was sheathed with four different types of structural foam sheathing on one side and gypsum wallboard (GWB) on the opposite side of the wall frame, with Simpson HDQ8 hold down anchors at the terminal studs. Section two included nine tests studying wall constructed with oriented strand board (OSB) only on one side of the wall frame subjected to gradually applied monotonic loads. Three of the OSB walls were tied to the baseplate with Simpson LSTA 9 tie on each stud. From the test results for Section one; the monotonic tests showed an 11 to 27 percent reduction in capacity from the published design values and for Section two; doubling baseplates, reducing anchor bolt spacing, using bearing plate washers and LSTA 9 ties effectively improved the OSB wall capacity. In comparison of sections one and two, it is expected the walls with structural foam sheathing without hold downs and GWB have a lower wall capacity as hold down and GWB improved the capacity.
Key Words
    capacity; design values; shear wall; oriented strand board; structural foam sheathing; monotonic loads, gypsum wallboard
Shideh Shadravan: Department of Architecture, University of Oklahoma, 830 Van Vleet Oval, Norman, OK 73019, United States
Chris C. Ramseyer, Royce W. Floyd: Department of Civil Engineering and Environmental Science, University of Oklahoma, 202 W. Boyd, Norman, OK 73019, United States

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