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 Higher Capacity Cold formed Steel Sheathed and Framed Shear Walls for Mid rise Buildings written by Veronica Santos and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "The use of cold-formed steel (CFS) for seismic force-resisting systems (SFRS), including shear walls, has increased throughout the years. However, the design provisions for CFS sheathed and framed shear walls available in the North American CFS standards (AISI S400 and AISI S240) are limited by the shear walls' sheathing and framing thicknesses. Design guidelines for CFS sheathed and framed shear walls for the purpose of mid-rise construction (up to 5 storeys) are still absent from the standards. The main objective of this research program was to develop a design procedure for CFS sheathed and framed shear walls to achieve higher capacity and ductility to resist the higher forces experienced in mid-rise construction. The developed design procedure is proposed to be included in the provisions of the AISI S240 Standard and AISI S400 Standard.The design procedure was developed by determining the shear strength of full-scale shear wall specimens built and tested at McGill University under monotonic and cyclic loading protocols. A total of 31 specimens, with varying building parameters, were constructed using thicker sheathing and framing members than what is currently available for design. The specimens were built using two new shear wall configurations (double-sheathed and centre-sheathed) to address out-of-plane forces experienced by shear walls tested in previous research programs.The centre-sheathed shear wall configuration, with a confined and concentrically placed sheathing panel, reached a shear resistance four times higher than the design values tabulated in the current standards. The ductility of these CFS shear walls was also significantly improved. A preliminary equation-based nominal shear strength prediction method has been developed for the centre-sheathed shear walls; the method reflects the shear wall's different configuration and superior behaviour. Following the test data analysis, preliminary design parameters for Limit States Design (LSD) used in Canada and for Load and Resistance Factor Design (LRFD) used in the USA and Mexico were determined, including the load resistance factor, f, and the factor of safety. In addition, capacity based design parameters were determined for seismic design in Canada. These parameters included the "test-based" seismic performance factors, Rd and Ro, which were found to be 2.8 and 1.5 respectively. The superior performance of the centre-sheathed configuration showed its promising potential as a new design option for higher capacity CFS shear walls. However, before a potential implementation into mid-rise construction, further research is needed in order for a complete design procedure to be developed. " --

Download or read book Higher Capacity Cold formed Steel Sheathed and Framed Shear Walls for Mid rise Buildings written by Vincent Brière and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Despite the increase in the use of cold-formed steel (CFS) in mid-rise construction (up to 5 storeys), the North American cold-formed steel standards AISI S400 and S240 do not provide a standard design procedure for CFS sheathed and framed shear walls for use in such constructions. The main objective of this research was to develop a design procedure for CFS sheathed and framed shear walls to achieve higher strength and ductility and resist the larger forces expected in mid-rise construction. The design procedure proposed for inclusion in the AISI S400 and S240 standards.Full-scale experiments have been performed using a shear wall testing frame at McGill University where a total of 31 specimens were tested monotonically and / or cyclically. These specimens were constructed with thicker sheathing and framing members not currently available for design, using two innovative building configurations (double-sheathed and centre-sheathed) to eliminate the effects of eccentric sheathing placement and take full advantage of bearing failure in the sheathing.The specimens were built with varying construction parameters (material thickness, screw size and screw spacing) and the test data was analysed using the Equivalent Energy Elastic-Plastic (EEEP) method. The configuration using a single concentric sheathing placement (centre-sheathed configuration) reached shear strengths nearly four times higher than what is listed in the current standards. Further, the walls' ductility was substantially improved (up to 8% drift), giving this design a strong potential to be used in mid-rise construction. A preliminary design method was introduced for this configuration, taking into consideration the different behaviour from these shear walls. A preliminary Limit States Design procedure for Canada (LSD) and the USA and Mexico (LRFD) was determined based on the test results. Resistance factors and overstrength values were also provided. The "test-based" ductility-related and overstrength-related seismic force modification factors for Canada (Rd and Ro) obtained the values of 2.8 and 1.5. This promising centre-sheathed configuration requires further research in order to advance towards a definitive design method for the use of CFS framed and sheathed shear walls in mid-rise construction." --

Download or read book Prescriptive Method for Residential Cold formed Steel Framed i e Framing written by NAHB Research Center and published by . This book was released on 1996 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Design Guide written by and published by . This book was released on 2009 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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 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 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 2018 International Plumbing Code Turbo Tabs Loose Leaf Version written by International Code Council and published by . This book was released on 2017-09-14 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An organized, structured approach to the 2018 INTERNATIONAL PLUMBING CODE Loose leaf Version, these TURBO TABS will help you target the specific information you need, when you need it. Packaged as pre-printed, full-page inserts that categorize the IPC into its most frequently referenced sections, the tabs are both handy and easy to use. They were created by leading industry experts who set out to develop a tool that would prove valuable to users in or entering the field.

Download or read book Influence of Gypsum Panels on the Response of Cold formed Steel Framed Shear Walls written by Sophie Lu and published by . This book was released on 2015 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Gypsum panels can be used as structural elements in cold-formed steel (CFS) framed shear walls to resist in-plane lateral loads. More commonly, however, gypsum panels are specified to solely provide sound-proofing and fire resistance, and hence are not accounted for in the structural design. Research has shown that gypsum-sheathed walls can provide in-plane lateral resistance and stiffness regardless of whether the gypsum is intended to act as a structural or non-structural component. On the one hand, the additional lateral resistance provided by the gypsum can be beneficial since a more economical design can be achieved. On the other hand, if the gypsum panels are not taken into account in the design, the additional stiffness provided by the gypsum may lead to increased seismic loads on the building. Moreover, in the current AISI S213 and S400 North American Standards for the seismic design of CFS framed structures the design must follow a capacity-based approach in which the resistance of all the members in the lateral load carrying path is greater than the probable resistance of the fuse element(s) combined with the gravity loads. Thus, the unaccounted lateral resistance provided by the gypsum panels can increase the resistance of the fuse element(s) and lead to an unexpected and possibly non-ductile failure in the other members of the lateral load carrying path. In the AISI S213 and S400 Standards, values for the nominal resistance and overstrength factor of wood, steel and gypsum sheathed shear walls are given, but have a limited range of application (e.g. 12.5 mm thick gypsum). No recommendations are provided to take into account the influence of gypsum in strap-braced walls, or the effect on probable capacity forces. The first objective of this thesis is to conduct a test program in order to obtain design values with respect to the nominal and maximum in-plane shear resistances, as well as the stiffness, of 1-hour and 2-hour fire resistance rated gypsum-sheathed strap-braced shear walls, gypsum-sheathed shear walls and gypsum-sheathed gravity-carrying walls. The second objective is to create a numerical model representing the behaviour of the tested gypsum-sheathed walls. A total of 35 2.44 m x 1.22 m walls were sheathed with different configurations of 15.9 mm-thick gypsum panels and then tested under in-plane lateral loading. Nominal values to be used in the design of gypsum-sheathed walls were found as well as methods to predict the probable resistance of gypsum-sheathed walls for capacity-based design. Numerical models of the walls were obtained with OpenSees and can be used to incorporate the effect of gypsum panels on walls in a full building model." --

Download or read book Commentary on the Prescriptive Method for Residential Cold formed Steel Framing written by and published by . This book was released on 1997 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Cold Formed Steel Design written by Wei-Wen Yu and published by John Wiley & Sons. This book was released on 2010-09-23 with total page 987 pages. Available in PDF, EPUB and Kindle. Book excerpt: The definitive text in the field, thoroughly updated and expanded Hailed by professionals around the world as the definitive text on the subject, Cold-Formed Steel Design is an indispensable resource for all who design for and work with cold-formed steel. No other book provides such exhaustive coverage of both the theory and practice of cold-formed steel construction. Updated and expanded to reflect all the important developments that have occurred in the field over the past decade, this Fourth Edition of the classic text provides you with more of the detailed, up-to-the-minute technical information and expert guidance you need to make optimum use of this incredibly versatile material for building construction. Wei-Wen Yu and Roger LaBoube, respected authorities in the field, draw upon decades of experience in cold-formed steel design, research, teaching, and development of design specifications to provide guidance on all practical aspects of cold-formed steel design for manufacturing, civil engineering, and building applications. Throughout the book, they describe the structural behavior of cold-formed steel members and connections from both the theoretical and experimental perspectives, and discuss the rationale behind the AISI and North American design provisions. Cold-Formed Steel Design, Fourth Edition features: Thoroughly up-to-date 2007 North American (AISI S100) design specifications Both ASD and LRFD methods for USA and Mexico LSD (Limit States Design) method for Canada A new chapter on the Direct Strength Method Updates and revisions of all 14 existing chapters In-depth design examples and explanation of design provisions Cold-Formed Steel Design, Fourth Edition is a necessary tool-of-the-trade for structural engineers, manufacturers, construction managers, and architects. It is also an excellent advanced text for college students and researchers in structural engineering, architectural engineering, construction engineering, and related disciplines.

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 Prescriptive Method for Residential Cold formed Steel Framing written by and published by . This book was released on 1997 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Innovative Cold Formed Steel Shear Walls with Corrugated Steel Sheathing written by Mahsa Mahdavian and published by . This book was released on 2016 with total page 175 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis presents two major sections with the objective of introducing a new cold-formed steel (CFS) shear wall system with corrugated steel sheathings. The work shown herein includes the development of an optimal shear wall system as well as an optimal slit configuration for the CFS corrugated sheathings which result in a CFS shear wall with high ductility, high strength, high stiffness and overall high performance. The conclusion is based on the results of 36 full-scale shear wall tests performed in the structural laboratory of the University of North Texas. A variety of shear walls were the subject of this research to make further discussions and conclusions based on different sheathing materials, slit configurations, wall configurations, sheathing connection methods, wall dimensions, shear wall member thicknesses, and etc. The walls were subject to cyclic (CUREE protocol) lateral loading to study their deformations and structural performances. The optimal sit configuration for CFS shear walls with corrugated steel sheathings was found to be 12×2 in. vertical slits in 6 rows. The failure mode observed in this shear wall system was the connection failure between the sheathing and the framing members. Also, most of the shear walls tested displayed local buckling of the chord framing members located above the hold-down locations. The second section includes details of developing a Finite Element Model (FEM) in ABAQUS software to analyze the lateral response of the new shear wall systems. Different modeling techniques were used to define each element of the CFS shear wall and are reported herein. Material properties from coupon test results are applied. Connection tests are performed to define pinching paths to model fasteners with hysteretic user-defined elements. Element interactions, boundary conditions and loading applications are consistent with full scale tests. CFS members and corrugated sheathings are modeled with shell elements, sheathing-to-frame fasteners are modeled using nonlinear springs (SPRING2 elements) for monotonic models and a general user defined element (user subroutine UEL) for cyclic models. Hold-downs are defined by boundary conditions. A total of three models were developed and validated by comparing ABAQUS results to full scale test results.

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 Prescriptive Method for Connecting Cold formed Steel Framing to Insulating Concrete Form Walls in Residential Construction written by United States. Department of Housing and Urban Development. Office of Policy Development and Research and published by . This book was released on 2003 with total page 77 pages. Available in PDF, EPUB and Kindle. Book excerpt: The common connections include interior steel stud walls to ICF exterior walls, steel floor decks and roof structures to ICF exterior walls, and upper story steel stud exterior walls to lower story ICF exterior walls. Alternative connection methods were explored and analyzed to produce reliable and economical solutions with readily available materials. The requirements are based on the American Iron and Steel Institute's Specifications for the Design of Cold Formed Steel Structural Members for steel member strength, the American Concrete Institute's Building Code Requirements for Structural Concrete, the Structural Design of Insulating Concrete Form Walls in Residential Construction for concrete design, and on the Standard for Cold-Formed Steel Framing--Prescriptive Method for One and Two Family Dwellings for steel framing requirements.