Experimental tests on typical screw connections for cold-formed steel housing

Fiorino, Luigi; Corte, Gaetano Della; Landolfo, Raffaele

doi:10.1016/j.engstruct.2006.09.006

Cited by 100 publications

(63 citation statements)

References 4 publications

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“…Several experimental investigations [3][4][5][6][7][8][9] have already been conducted on the shear response of screw connections with gypsum sheathing or other board materials at ambient temperature.…”

Section: Introductionmentioning

confidence: 99%

Design of Cold-Formed Steel Screw Connections with Gypsum Sheathing at Ambient and Elevated Temperatures

Chen

2016

Applied Sciences

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Load-bearing cold-formed steel (CFS) walls sheathed with double layers of gypsum plasterboard on both sides have demonstrated good fire resistance and attracted increasing interest for use in mid-rise CFS structures. As the main connection method, screw connections between CFS and gypsum sheathing play an important role in both the structural design and fire resistance of this wall system. However, studies on the mechanical behavior of screw connections with double-layer gypsum sheathing are still limited. In this study, 200 monotonic tests of screw connections with single-or double-layer gypsum sheathing at both ambient and elevated temperatures were conducted. The failure of screw connections with double-layer gypsum sheathing in shear was different from that of single-layer gypsum sheathing connections at ambient temperature, and it could be described as the breaking of the loaded sheathing edge combined with significant screw tilting and the loaded sheathing edge flexing fracture. However, the screw tilting and flexing fracture of the loaded sheathing edge gradually disappear at elevated temperatures. In addition, the influence of the loaded edge distance, double-layer sheathing and elevated temperatures is discussed in detail with clear conclusions. A unified design formula for the shear strength of screw connections with gypsum sheathing is proposed for ambient and elevated temperatures with adequate accuracy. A simplified load-displacement model with the post-peak branch is developed to evaluate the load-displacement response of screw connections with gypsum sheathing at ambient and elevated temperatures.

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Section: Introductionmentioning

confidence: 99%

Design of Cold-Formed Steel Screw Connections with Gypsum Sheathing at Ambient and Elevated Temperatures

Chen

2016

Applied Sciences

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“…As discussed further in Section 11 of this Guide, developing mechanics-based predictions of many shear walls is possible if the hysteretic performance of the local stud-fastener-sheathing connection in shear is known (Buonopane et al 2015). Limited existing data provide hysteretic performance of wood-to-steel fasteners in shear (Fiorino et al 2007. The hysteresis for shear of a single fastener connected to a small segment of wood and steel is nearly identical in shape to the hysteresis of a complete wall.…”

Section: Componentsmentioning

confidence: 99%

“…In Europe, multi-year efforts in Italy and Romania stand out as contributing to the state of the art. In Italy, Landolfo and colleagues performed CFS-framed wood-sheathed shear wall tests (Landolfo et al 2006), fastener testing (Fiorino et al 2007), prototype structures (Iuorio et al 2014), and complete design philosophies (Fiorino et al 2009). In Romania, Fülöp and Dubina performed CFSframed wood-and plaster-sheathed shear wall tests (Fülöp and Dubina 2006), complementary numerical models (Fülöp and Dubina 2004) and also developed full seismic design procedures (Dubina 2008).…”

Section: Aisi Cfs Framing Standardsmentioning

confidence: 99%

Seismic Design of Cold-Formed Steel Lateral Load-Resisting Systems: A Guide for Practicing Engineers

Madsen¹,

Castle²,

Schafer³

2016

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He has more than 25 years of construction industry experience and manages the company codes and compliance efforts. Additionally, he is involved in research and development and provides technical support for connectors, fastening systems, and lateral force resisting systems. He was a practicing design engineer for commercial, residential and forensic projects for more than 9 years prior to joining Simpson Strong-Tie in 2000. He currently serves as the President for the Structural Engineers Association of Southern California (SEAOSC), a SEAOC Director, a CALBO Structural Safety Committee member, and as a Manager on the ICC-ES Board of Managers. He served as AISI COFS Lateral Design Subcommittee Chairman for several years and as the Cold-Formed Steel Engineers Institute (CFSEI) President.Meaghan C. Halligan, P.E., S.E., LEED AP BD+C, is the Principal Structural Engineer at ISAT Seismic Bracing in Fremont, California. She previously managed the ISAT cold-formed steel engineering division. Prior to ISAT, she worked at several Bay Area engineering consulting firms and developed experience in the design of multifamily residential structures, seismic upgrades of commercial buildings, and light-gage steel tenant improvements. She is a member of the SEAONC Seismology Nonstructural Subcommittee and is a past chair of the SEAONC Disaster and Emergency Services Committee. Chia-Ming National Institute of Standards and TechnologyNIST is a federal technology agency within the U.S. Department of Commerce that promotes U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life. NIST is the lead NEHRP agency. Dr. Steven L. McCabe is the Earthquake Engineering Group (EEG) Leader within the Materials and Structural Systems Division of the Engineering Laboratory at NIST. The EEG supports the work of the NEHRP program at NIST. Applied Technology CouncilThe Applied Technology Council (ATC) is a nonprofit corporation advancing engineering applications for hazard mitigation. This publication is a product of Task Order 15-347 under Contract SB1341-13-CQ-0009 between ATC and NIST. Jon A. Heintz serves as the Program Manager for work conducted under this contract, and Scott Schiff serves as ATC Associate Program Manager on this Task Order. Consortium of Universities for Research in Earthquake EngineeringThe Consortium of Universities for Research in Earthquake Engineering (CUREE) is a nonprofit organization advancing civil engineering research and education to increase the resilience of the built environment to natural and manmade hazards. This publication was produced under a cooperative agreement between ATC and CUREE. Robert Reitherman served as Associate Program Manager overseeing production. Reed Helgens and Darryl Wong served as report production and report preparation consultants for this work. NEHRP Seismic Design Technical BriefsNational Earthquake Hazards Reduction Program (NEHRP) Technical Briefs are published ...

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“…Significant work has been conducted on sheathing-braced cold-formed steel stud walls, Okasha (2004), Fiorino et al (2007), and Chen et al (2006) have concentrated their efforts in determining the resistance of the stud-to-sheathing connection; while Miller and Pekoz (1993), Winter (1960), and Simaan and Pekoz (1976) have specifically investigated fastener demands. The commentary of AISI-S211 (2007), based on the research conducted by Winter (1960), states that a fastener-sheathing assembly shall be designed for a load equal to 2% of the axial load, also know as "2% rule".…”

Section: Introductionmentioning

confidence: 99%

Fastener Demands for Sheathing-Braced Cold-Formed Steel Stud Gravity Walls

Vieira

Schafer

2016

Lat. Am. j. solids struct.

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We explore, in this paper, the demands and behavior on fasteners supplying sheathing-based bracing of gravity loaded cold-formed studs and wall assemblies. The studies are carried out by shell finite element (FE) models, which are compared to analytical solutions and previously completed laboratory tests conducted by the authors. The connection between the sheathing and the stud should be able to develop enough resistance to restrain global buckling of the studs; therefore, special attention has to be given to the demands on these connections for design. Local buckling and stress concentrations may damage some connections and redistribution of forces should be ensured. Classical practice for determining fastener demand -i.e., the 2% rule -may be deficient. An analytical method developed for determining fastener demand is compared to the FE models presented in this paper; the analytical method results in a reasonable prediction of the fastener forces in wall studs.

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Experimental tests on typical screw connections for cold-formed steel housing

Cited by 100 publications

References 4 publications

Design of Cold-Formed Steel Screw Connections with Gypsum Sheathing at Ambient and Elevated Temperatures

Design of Cold-Formed Steel Screw Connections with Gypsum Sheathing at Ambient and Elevated Temperatures

Seismic Design of Cold-Formed Steel Lateral Load-Resisting Systems: A Guide for Practicing Engineers

Fastener Demands for Sheathing-Braced Cold-Formed Steel Stud Gravity Walls

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