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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"Cold Formed Steel"”.
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Reliability based criteria for cold-formed steel members
<p>"In the design of steel buildings, the "Allowable Stress Design (ASD)" method has long been used for cold-formed steel structural members in the United States and other countries. In this approach, member forces, or moments, determined on the basis of working loads should not exceed the …
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Resistance Factor for Cold-Formed Steel Compression Members
… if the LRFD strength reduction factor for cold-formed steel compression members can be increased above its current value of Ï c = 0.85, which was established by the LRFD Cold-Formed Steel Design Manual (1991) on the basis of 264 column tests. The resistance factor in the Canadian code for …
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Experiments on Cold-Formed Steel Beams with Holes
… testing and elastic buckling studies were performed on 68 C-section cold-formed steel joists with unstiffened rectangular web holes. Four Steel Stud Manufacturers Association (SSMA) cross-section types; 800S200-33, 800S200-43, 1000S162-54, and 1200S162-97, were evaluated to explore the …
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Web crippling of high strength cold-formed steel beams
<p>"The structural behavior of high strength cold-formed steel beams subjected primarily to web crippling was investigated analytically and experimentally. In this study hat sections and I-beams, formed from five different types of high strength sheet steels commonly used in the automobile …
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Development of a Novel Cold-Formed Steel Truss System
In recent years, cold-formed (CFS) trusses have gained popularity due to many advantages such as being lightweight, non-combustible, termite and rot resistant, flexible in design, and ease of handling and fabrication. Often CFS trusses are designed and assembled at a plant and then transported to …
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Development of performance sections for cold-formed steel residential construction
The wider use of cold-formed steel framing is hindered by the lack of generic sections. This study puts forth an effort to develop a performance section designation code without specifying the geometry of the sections. A PC-based program to analyze C-section was developed and used to produce …
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Structural and thermal performance of cold-formed steel studs with slits
Cold-formed steel (CFS) studs in lightweight construction increasingly incorporate web slits to limit thermal bridging, yet these openings can reduce axial strength. This thesis integrates structural and thermal assessments through validated non-linear elasto-plastic finite element analysis (FEA) …
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The structural behavior of cold-formed steel members with perforated elements
… of perforations on the structural behavior of cold-formed steel structural members. Since in many cases, the load-carrying capacity of cold-formed steel members depends on the buckling behavior of individual component elements, emphasis has been concentrated on the study of the instability and …
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Performance Evaluation of Cold -Formed Steel Braced Frames for Seismic Loads
A series of 2-, 4- and 6-story buildings were designed and evaluated using the proposed method. It was found that 4- and 6-story buildings design and configured based on current provisions using an R factor of 4 did not satisfy the design objective. This resulted mainly from excessive drift demands …
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Screw-Fastened Cold-Formed Steel-to-Steel Shear Connection Behavior and Models
… angle and limit states of single-fastened cold-formed steel-to-steel shear connections. Predictions are validated through an experimental study considering ply configuration and a single Hex #10 -washer head fastener, centered in a 102 mm by 102 mm three boundary window. The fastener …
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Strengthening of cold-formed steel channels using different reinforcing options and innovative connections
Cold-formed steel (CFS) has become an essential material in modern construction due to its lightweight, cost-effectiveness, and versatility. This study primarily investigated the web crippling capacity of channels with elongated edge-stiffened web holes. Compared to traditional circular …
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Monotonic and Cyclic Simulation of Screw-Fastened Connections for Cold-Formed Steel Framing
… modeling the monotonic and cyclic response of cold-formed steel framing screw-fastened connections in commercial finite element programs. The model proposed and verified herein lays the groundwork for seismic modeling of cold-formed steel (CFS) framing including shear walls, gravity walls, …
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Experimental and Analytical Studies of the Behavior of Cold-Formed Steel Roof Truss Elements
Cold-formed steel roof truss systems that use complex stiffener patterns in existing hat shape members for both top and bottom chord elements are a growing trend in the North American steel framing industry. When designing cold-formed steel sections, a structural engineer typically tries to improve …
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A Framework for Cyclic Simulation of Thin-Walled Cold-Formed Steel Members in Structural Systems
… efficient seismic analysis framework for cold-formed steel (CFS) framed-buildings supported by hysteretic nonlinear models for CFS members and screw-fastened connections. Design of CFS structures subjected to lateral seismic forces traditionally relies on the strength of subassemblies …
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The influence of fastener spacing on the slip modulus between cold formed steel and wood sheathing
… engineering. Previous studies have shown that cold formed steel (CFS) sheathed with structural wood panels exhibits a degree of partial composite action behavior. However currently in the design process, CFS and wood sheathing systems are considered separately in a non-composite manner due to …
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Numerical and Experimental Investigations on Static Behaviour of Composite Cold-Formed Steel and Timber Flooring System
Currently, the use of Cold-Formed Steel (CFS) joists with timber-based floorboards for constructing lightweight flooring systems in residential buildings is widespread. However, the potential benefits of composite action that arise due to the interaction of the top flange of cold-formed steel joist …
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Web crippling behaviour of cold-formed steel sections with circular web openings under one-flange loading
… openings are increasingly used in load bearing cold-formed steel members, such as wall studs or floor joints, to facilitate services in buildings. In such members, web crippling can occur at points of concentrated loads, which will be influenced by the size and position of the openings. Due to …
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A study of the rotational behaviour of the bolted connections in the cold-formed steel purlin system
Cold-formed steel purlin systems are widely used in modem building construction, for supporting the roof and floor structures. The rotational behaviour of beam-to-beam bolted connections, which are used between the sections, significantly affects the performance of purlin systems and is hard to …
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On the strength and DSM design of end-bolted cold-formed steel columns buckling in distortional modes
… the behavior and ultimate strength of end-bolted cold-formed steel lipped channel columns selected to fail in distortional modes. Besides describing the test set-up and procedure, the available results are presented and discussed: they concern three tests and consist of (i) initial imperfection …
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