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Saturday 3 December 2016

LATERAL CONNECTION BEHAVIOR OF MOLDED CORE SANDWICH PANELS WITH SELF-TAPPING SCREWS

Author
Daniel Way, Tahir Akgul, Ian Morrell, Arijit Sinha

ABSTRACT


This study investigated lateral connection behavior of a single shear connection between a molded core sandwich panel produced with wood strands, and solid sawn lumber. A continuous thread self-tapping screw and common nail were the fasteners evaluated. Connection assemblies with self-tapping screws showed much greater stiffness, yield load, and load-carrying capacity than nailed assemblies, indicating that self-tapping screws may be a viable option for connections between wood-based molded core panels and solid sawn lumber.

KEYWORDS


self-tapping screws; molded core panels; sandwich panels; wood connectors; lateral connections

FULL TEXT:

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REFERENCES

AFPA (2012) National Design Specification (NDS) for Wood Construction. American Forest and Paper Association, Washington, D.C.
ASTM (2008) F1575. Standard test method for determining bending yield moment of nails. American Society for Testing and Materials, West Conshohocken, PA.
ASTM (2012) D1761. Standard Test Methods for Mechanical Fasteners in Wood. American Society for Testing and Materials, West Conshohocken, PA.
Blass H, Bejtka I (2001) Screws with continuous threads in timber connections. Proc RILEM Symposium on Joints in Timber Structures. Stuttgart, Germany, 193-201. http://holz.vaka.kit.edu/public/21.pdf
CCMC (2014) Evaluation Report: SWG ASSY VG Plus and SWG ASSY 3.0 Self-Tapping Wood Screws. Canadian Construction Materials Centre Report No. CCMC 13677-R. http://www.swg-produktion.de/fileadmin/Zulassungen/13677eCCMCEvaluationReportASSY30ASSYplusVG.pdf
Fujii JS (2014) Dry forming three dimensional wood fiber webs. U.S. Patent 8,852,485
Hossain A, Lakshman R, Tannert T (2015) Shear connections with self-tapping screws for cross-laminated timber panels. ASCE Structures Congress 2015, 2251-2259 http://ascelibrary.org/doi/pdfplus/10.1061/9780784479117.195
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Martin I (2009) Self-tapping screws as reinforcement for timber structures. Proc IASS Symposium, Evolution and Trends in Design, Analysis and Construction of Shell and Spatial Structures. Universidad Politecnica de Valencia, Spain, 12-23 https://riunet.upv.es/bitstream/handle/10251/6537/PAP_TRAUTZ_456.pdf;sequence=1
Voth C (2009) Lightweight sandwich panels using small-diameter timber wood-strands and recycled newsprint cores. MS thesis, Washington State University, Pullman, WA.
Way D (2015) Proof of concept for a three-dimensional molded core wood-strand sandwich panel. MS thesis, Oregon State University, Corvallis, OR. http://ir.library.oregonstate.edu/xmlui/handle/1957/56239
Way D, Sinha A, Kamke FA, Fujii JS (2016) Evaluation of a wood-strand molded core sandwich panel. J. Mater. Civ. Eng., 10.1061/(ASCE)MT.1943-5533.0001589, 04016074.
http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0001589

For further details log on website :
https://wfs.swst.org/index.php/wfs/article/view/2473

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