Download or read book Analytical Model for Lateral Deflection in Cold formed Steel Framed Shear Walls with Steel Sheathing written by Mohamad Yousof and published by . This book was released on 2014 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analytical Model of Cold formed Steel Framed Shear Wall with Steel Sheet and Wood based Sheathing written by Noritsugu Yanagi and published by . This book was released on 2013 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Method of Cold Formed Steel Framed Shear Wall Sheathed by Structural Concrete Panel written by Aida Ashkanalam and published by . This book was released on 2019 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is developing a new method of design for cold-formed steel framed shear wall sheathed by 3⁄4" thick USG structural panel concrete subfloor using a predictive analytical model and comparing the results obtained from the model with those achieved from real testing to verify the analytical model and predicted lateral load-carrying capacity resulted from that. Moreover, investigating the impact of various screw spacings on shear wall design parameter such as ultimate strength, yield strength, elastic stiffness, ductility ratio and amount of energy dissipation is another purpose of this research.

Download or read book Advances in Engineering Structures Mechanics Construction written by M. Pandey and published by Springer Science & Business Media. This book was released on 2007-02-10 with total page 847 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the proceedings of an International Conference on Advances in Engineering Structures, Mechanics & Construction, held in Waterloo, Ontario, Canada, May 14-17, 2006. The contents include contains the texts of all three plenary presentations and all seventy-three technical papers by more than 153 authors, presenting the latest advances in engineering structures, mechanics and construction research and practice.

Download or read book Impact of Gravity Loads on the Lateral Performance of Cold Formed Steel Frame Steel Sheathed Shear Walls written by Jamin DaBreo and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Canadian seismic design provisions for cold-formed steel framed/steel sheathed shear walls have been developed from previous research at McGill University with the intent of being incorporated into the Canadian section of the North American Lateral Design Standard for Cold-Formed Steel Framing (AISI S213), and ultimately to provide guidelines for design of these systems in the National Building Code of Canada and CSA-S136 Specification.In this previous research, a limited number of shear walls displayed unfavourable damage due to twisting deformations of the chord-studs and by local buckling. Also, the shear walls tested in previous research were only laterally loaded. The objective of the current research program was to address this unfavourable failure mode by evaluating the performance of cold-formed steel framed/steel sheathed shear walls, constructed with blocked stud members, which were tested under combined gravity and lateral loading. In total, fourteen single-storey shear walls (8 configurations) were subjected to monotonic and CUREE reversed cyclic lateral loading protocols. The Equivalent Energy Elastic-Plastic (EEEP) approach was used to analyse the test data and determine nominal shear resistance values. Relevant design parameters were determined: a resistance factor, phi, of 0.7, an overstrength value of 1.4, and ductility and overstrength seismic force modification factors (Rd = 2.0 and Ro = 1.3). Dynamic analysis of a two storey representative building model was carried out to validate the 'test-based' R-values following a methodology adopted from FEMA P695 to evaluate the seismic performance of a building system.The research program indicated that the blocking reinforcement detail had adequately resolved chord-stud twisting deformations and that the chord-studs, once designed to carry the combined gravity and lateral forces following a capacity based approach, would not fail thereby preventing any detrimental collapse of the framing system." --

Download or read book Cold Formed Steel Design written by Wei-Wen Yu and published by John Wiley & Sons. This book was released on 2019-10-04 with total page 1181 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides the latest AISI North American specifications for cold-formed steel design Hailed by professionals around the world as the definitive text on the design of cold-formed steel, this book provides descriptions of the construction and structural behavior of cold-formed steel members and connections from both theoretical and experimental points of view. Updated to reflect the 2016 AISI North American specification and 2015 North American framing standards, this all-new fifth edition offers readers a better understanding of the analysis and design of the thin-walled, cold-formed steel structures that have been widely used in building construction and other areas in recent years. Cold-Formed Steel Design, 5th Edition has been revised and reorganized to incorporate the Direct Strength Method. It discusses the reasons and justification for the various design provisions of the North American specification and framing design standards. It provides chapter coverage of: the types of steels and their most important mechanical properties; the fundamentals of buckling modes; commonly used terms; the design of flexural members, compression members and closed cylindrical tubes, and of beam–columns using ASD, LRFD, and LSD methods; shear diaphragms and shell roof structures; standard corrugated sheets; and more. Updated to the 2016 North American (AISI S100) design specification and 2015 North American (AISI S240) design standard Offers thorough coverage of ASD, LRFD, LSD, and DSM design methods Integrates DSM in the main body of design provisions Features a new section on Power-Actuated Fastener (PAF) Connections Provides new examples and explanations of design provisions Cold-Formed Steel Design, 5th Edition is not only instructive for students, but can serve as a major source of reference for structural engineers, researchers, architects, and construction managers.

Download or read book Performance of Centre sheathed Cold formed Steel Framed Shear Walls Phase 2 written by Jia Cheng Wu and published by . This book was released on 2019 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "To enter into the construction market for mid-rise buildings, e.g. 5 to 8 storeys, the cold-formed steel (CFS) industry requires a solution to address the need to resist higher seismic shear forces. The proven performance of steel-sheathed shear walls is required to compete with hot-rolled steel lateral framing shear wall systems; i.e. all-steel shear wall configurations capable of carrying lateral loads in excess of 60 kN/m (4170 lb/ft). The American Iron and Steel Institute (AISI) developed a design standard for cold-formed steel lateral framing systems, i.e. the AISI S400-15. This standard contains design information for shear walls with shear resistance values up to 30 kN/m (2085 lb/ft). Various solutions exist to increase the shear resistance of a CFS framed shear wall to a level appropriate for mid-rise buildings. For example, in shear walls with sheathing placed on both sides of the wall, torsional loading on the framing members was avoided, and hence the shear resistance was significantly increased. However, the ductility of the walls was not improved compared to previously run tests due to the sheathing pulling over the screw fasteners.A configuration in which the sheathing is placed at the mid-line of the framing, denoted the “centre-sheathed” shear wall, was recently developed through a laboratory test program. These walls were configured to centrally confine the sheathing within the framing, which resulted in the removal of torsional forces on the chord studs and provided for a substantial increase in both shear resistance and ductility in comparison with walls having external sheathing on both sides. The initial test walls proved to have higher shear resistance, i.e. over four times that currently found in the AISI S400-15, and could maintain this resistance to drifts exceeding 6%. However, the high shear forces posed difficulties in designing the perimeter framing members and attachments to the foundation given that the structure is composed of CFS with a maximum thickness of 2.5 mm. This second laboratory-based study was conducted to configure centre-sheathed walls to attain intermediate shear resistances but maintain the ability to carry load at high drift levels. In addition, tests were carried out on the bare frame structure to identify the added shear capacity provided by the specially detailed CFS perimeter frame. Further, connection tests were completed to address the need to develop bearing design equations for the double shear 3-ply screw connections that connect the sheathing to the frame, which is not currently addressed in any design standard on cold-formed steel"--

Download or read book Deflection Gap Study for Cold formed Steel Curtain Wall Systems written by Barbara L. Monroy and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Cold-formed steel has become a preferred building material for wall framing in many different types of structures. One of its main uses has been as non-structural members in curtain wall assemblies of structural steel framed buildings. In an exterior wall application, the main purpose of the curtain wall is to transfer out of plane loads to the steel frame while not supporting any superimposed gravity loads. Therefore, when the curtain wall is in the plane of the structural steel frame, the vertical deflection of the spandrel beam directly above the wall must be known to provide the appropriate deflection gap between the beam and the curtain wall so that gravity loads are not transferred to the wall. Common practice is to size the gap for the deflection from 100% of the live load. In some cases, the deflection gap may be significant, and since this gap must also be provided in the exterior cladding of the wall, it creates a design issue for the architect. This report presents the results of an investigation into the feasibility of reducing the size of the deflection gap when the wall is located directly under the spandrel beam. In this study, analytical models were developed for common design situations of curtain walls constructed of cold-formed steel studs in structural steel framed buildings. This study investigates two common stud heights combined with different floor live loads. Taking into account that wall studs have some available axial compressive strength, a procedure was developed to determine an appropriate reduction for the gap. Using an iterative process a relationship is made between the axial compressive strength of the stud and the amount of axial load the stud can support to establish a factor which gives the percentage the live load gap for 100% live load can be safely reduced by.

Download or read book Lateral Resistance of Steel clad Wood framed Shear Walls with Openings written by Dustin G. Gatchalian and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Environmentalism written by J. Michael Martinez and published by CRC Press. This book was released on 2013-06-20 with total page 1227 pages. Available in PDF, EPUB and Kindle. Book excerpt: Protecting the natural environment and promoting sustainability have become important objectives, but achieving such goals presents myriad challenges for even the most committed environmentalist. American Environmentalism: Philosophy, History, and Public Policy examines whether competing interests can be reconciled while developing consistent, coherent, effective public policy to regulate uses and protection of the natural environment without destroying the national economy. It then reviews a range of possible solutions. The book delves into key normative concepts that undergird American perspectives on nature by providing an overview of philosophical concepts found in the western intellectual tradition, the presuppositions inherent in neoclassical economics, and anthropocentric (human-centered) and biocentric (earth-centered) positions on sustainability. It traces the evolution of attitudes about nature from the time of the Ancient Greeks through Europeans in the Middle Ages and the Renaissance, the Enlightenment and the American Founders, the nineteenth and twentieth centuries, and up to the present. Building on this foundation, the author examines the political landscape as non-governmental organizations (NGOs), industry leaders, and government officials struggle to balance industrial development with environmental concerns. Outrageous claims, silly misrepresentations, bogus arguments, absurd contentions, and overblown prophesies of impending calamities are bandied about by many parties on all sides of the debate—industry spokespeople, elected representatives, unelected regulators, concerned citizens, and environmental NGOs alike. In lieu of descending into this morass, the author circumvents the silliness to explore the crucial issues through a more focused, disciplined approach. Rather than engage in acrimonious debate over minutiae, as so often occurs in the context of "green" claims, he recasts the issue in a way that provides a cohesive look at all sides. This effort may be quixotic, but how else to cut the Gordian knot?

Download or read book Hysteretic Response of Steel Clad Wood Framed Shear Walls Under Reverse cyclic Loading written by Khoi Duc Mai and published by . This book was released on 2016 with total page 229 pages. Available in PDF, EPUB and Kindle. Book excerpt: FEA models were developed and validated to predict shear strength and effective shear modulus of SCWF shear walls under monotonic loading. Moreover, the hysteretic behavior of SCWF shear walls was predicted using hysteretic behavior of sheathing-to-framing connector elements. Analyses were performed to assess the shear strength, stiffness, ductility, equivalent energy elastic plastic (EEEP), and hysteretic parameters of tested SCWF shear wall specimens. Experimental tests also provided the seismic design coefficients of SCWF shear walls, which are currently lacking in the building codes.

Download or read book Experimental and Analytical Studies of Cyclic Behavior of Steel and Composite Shear Wall Systems written by Qiuhong Zhao and published by . This book was released on 2006 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Computational Modelling of Cold Formed Steel Shear Wall Panels written by Mokkaiyan Nithyadharan and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 352 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph presents the experimental studies and computational modelling of Cold-Formed Steel Shear Wall panels (CFSSWP) under in-plane shear loading. The CFSSWP is the main lateral load resisting element in CFS housing system under earthquake type loading. The nonlinear behaviour of CFSSWP is dictated by the screw connections between the CFS members and the sheathing. This monograph presents the experimental studies on wall panels and its screw connection sub assemblage under monotonic and reversed cyclic loading. To develop the Finite element model of CFSSWP based on screw behaviour, a new Variably Oriented Screw Pair Element (VOSPE) is proposed. Experimentally observed deteriorating behaviour of the screw connections in the CFSSWP, were modelled with Smooth Differential Bouc-Wen-Baber-Noori model. The proposed FE modelling strategy is capable of modelling the nonlinear behaviour observed in the experimental results of the CFSSWP tested under monotonic and quasi-static reversed cyclic loading. The monograph focuses on the work carried by the first author at Indian Institute of Technology Madras, India as part of his doctoral study.

Download or read book Commentary on the Prescriptive Method for Residential Cold Formed Steel Framing written by Nader R. Elhajj and published by DIANE Publishing. This book was released on 2000-05 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: Use of cold formed steel framing in the residential market has increased over the past years. Its price stability, consistent quality, similarity to conventional framing, successes in the commercial market, & resistance to fire, rot, & termites have attracted the attention of many builders. However, lack of prescriptive construction requirements has prevented this alternative material from gaining wider acceptance among home builders & code officials. This handbook provides background, engineering assumptions & methods, & detailed calculations for this method. Illustrated.

Download or read book Commentary on the Prescriptive Method for Residential Cold formed Steel Framing First Edition written by and published by . This book was released on 1996 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Analytical Modeling of Wood Frame Shear Walls Subjected to Vertical Load written by Hai Nguyendinh and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A nonlinear automated parameter fitted analytical model that numerically predicts the load-displacement response of wood frame shear walls subjected to static monotonic loading with and without vertical load is presented. This analytical model referred to as Analytical Model of wood frame SHEar walls subjected to Vertical load (AMSHEV) is based on the kinematic behavior of wood frame shear walls and captures significant characteristics observed from experimental testing through appropriate modeling of three failure mechanisms that can occur within a shear wall under static monotonic load: 1) failure of sheathing-to-framing connectors, 2) failure of vertical studs, and 3) uplift of end studs from bottom sill. Previous models have not accounted for these failure mechanisms as well as the inclusion of vertical load, which has shown to reveal beneficial effects such as increasing the ultimate load capacity and limiting uplift of the wall as noted in experimental tests. Results from the proposed numerical model capture these effects within 7% error of experimental test data even when different magnitudes of vertical load are applied to predict the ultimate load capacity of wood frame shear walls.

Download or read book Shear Wall Tests and Finite Element Analysis of Cold formed Steel Structural Members written by and published by . This book was released on 2008 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt: