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Full-Text Articles in Engineering
A Study On The Flexural Behavior Of Profiled Composite Beams, Gu Rok Yang, Yong Seo Hwang, Young Bong Kwon
A Study On The Flexural Behavior Of Profiled Composite Beams, Gu Rok Yang, Yong Seo Hwang, Young Bong Kwon
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
An analytical study on the behavior of composite beams, which are composed of cold-formed steel sheeting and normal strength concrete, is described. An analytical method to trace the nonlinear behavior of a composite beam is developed to include the nonlinear material properties of steel sheeting, reinforcing steel bar and concrete. However, since the method is complex and tedious to use, two simple formulas for the nonlinear moment-curvature relation of the composite beam have been proposed. A simple power model, which has been originally used to predict the flexural capacity of the beam to column connections, is proposed as the first …
Cold-Formed Shear Connectors For Composite Constructions, Maximiliano Malite, Walter A. Nimir, Jose Jairo De Sales, Roberto Martins Goncalves
Cold-Formed Shear Connectors For Composite Constructions, Maximiliano Malite, Walter A. Nimir, Jose Jairo De Sales, Roberto Martins Goncalves
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Construction employing composite steel-concrete structures has been increasingly applied in building and bridge structures, and solutions involving cold-formed profiles have recently appeared which, in many cases, have resulted in reduced costs. Because constructions using composite steel-concrete structures, involving cold-formed profiles, are not covered by current Brazilian Codes, it is necessary to investigate the issue. This paper, therefore, presents the results of an experimental analysis (24 push-out tests) made for two types of connectors: U-profile and angle, with two plate thicknesses: 2.65 mm and 4.76 mm, evaluating their strength and their load-slip behavior. The tests were performed on test specimens adapted …
Accelerated Test Development For Coil-Coated Steel Building Panels, K. M. Lawson, H. H. Lawson, H. E. G. Rommal, A. C. Tiburcio
Accelerated Test Development For Coil-Coated Steel Building Panels, K. M. Lawson, H. H. Lawson, H. E. G. Rommal, A. C. Tiburcio
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper discusses the experimental design and the preliminary findings of an ongoing project designed to establish an accelerated laboratory test that would rank coating system performance the same as their performance in atmospheric exposure. A total of ten materials are included in the program: four substrates each with two coating systems and one substrate with two additional coating systems. Samples were installed at four atmospheric exposure sites: Middletown, OH, Daytona Beach, FL, Monroeville, PA, and Halifax, NS, Canada. Three different orientations were utilized at each of the exposure sites and a variety of building panel features were included on …
Ductility Measurements Of Thin G550 Sheet Steels, Colin A. Rogers, Gregory J. Hancock
Ductility Measurements Of Thin G550 Sheet Steels, Colin A. Rogers, Gregory J. Hancock
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Cold formed structural members are fabricated from sheet steels which must meet various material requirements prescribed in applicable national design standards. These requirements ensure that; I) stress concentrations can be redistributed and 2) members and connections can undergo a minimum amount of displacement without a loss in structural performance. The Australian / New Zealand, AS/NZS 4600, and both North American, CSA-S136 and AlSI, Cold Formed Steel Design Standards allow for the use of thin (t < O.9mm), high strength (fy = 550MPa) sheet steels if the yield stress and ultimate strength are reduced to 75% of their minimum specified values. This paper provides a summary of results detailing the ductility and net cross-section tensile resistance of G550 sheet steels (to Australian Standard AS 1397) tested as solid and perforated coupons. Material properties of the test specimens are compared wIth the Dhalla and Winter requirements for ductility and ultimate strength to yield stress ratio. limit states tensile design equations are calibrated according to procedures defmed by the American Iron and Steel Institute (AlSI) Commentary.
Technique And Qualities Of Beams With Expanded Metal Sections, M. Hellsten
Technique And Qualities Of Beams With Expanded Metal Sections, M. Hellsten
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The rotary expander technique can be used for manufacturing Lattice framework from a single strip of sheet metal by integrating expanded metal with solid sheet. This technique can be used to distribute the material in a tubular, or open profile to where it's best needed. Valuable qualities possible to are: - low weight and optimal strength - low energy transmission (noise and heat) - soft deformation and favorable energy absorbing properties - good fatigue resistance - high flexibility in design and product qualities These qualities are useful in applications like: - light and strong steel framing systems for buildings - …
Bearing Design Of Thin Sheet Steel Screwed Connections, Colin A. Rogers, Gregory J. Hancock
Bearing Design Of Thin Sheet Steel Screwed Connections, Colin A. Rogers, Gregory J. Hancock
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The 1996 Australian / New Zealand AS/NZS 4600 and North American; CSA-S136, AISI Cold Formed Steel Design Standards allow for the use of thin (t < 0.9 mm in AS/NZS 4600), high strength (fy = 550 MPa) sheet steels if the yield stress and ultimate strength are reduced to 75% of their minimum specified values. At present, these reduced material properties must be used in the design of screwed connections which undergo bearing and bearing/tilting failure. Previous research has illustrated the need for design standards to include a gradated bearing coefficient method to account for the behaviour of thin high strength sheet steels, instead of a gross reduction in material properties. This paper provides a summary of results detailing the behaviour of screwed connections tested in shear which have failed in the bearing and bearing/tilting modes. Recommendations concerning the adequacy of current design standards with respect to a proposed formulation which can be used to more accurately predict the shear resistance of screwed connections which fail in the bearing and bearing/tilting modes are presented.
Understanding Pullover, Jonathan Sabia Kreiner, Duane S. Ellifritt
Understanding Pullover, Jonathan Sabia Kreiner, Duane S. Ellifritt
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Self drilling screws are often used for attaching roof and wall panels to structural framing and are subjected to tensile loads caused by negative wind pressures. Pullover failure is often associated with this loading condition, which occurs when It fastener pulls through a metal panel but remains attached to the structural framework underneath. The American lron and Steel Institute (AISI) has developed several standard tests for pullover and has included a design criterion for pullover in their specification. However, previous research at the University of Florida has found one particular test and the AISI Specification Section E4.4.2 to be un-conservative. …
The Local Buckling Strength Of Partially Stiffened Type 3cr12 Stainless Steel Compression Elements In Beam Flanges, G. J. Van Den Berg
The Local Buckling Strength Of Partially Stiffened Type 3cr12 Stainless Steel Compression Elements In Beam Flanges, G. J. Van Den Berg
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
In this study the effect of the non-linear behaviour of stainless steels on the local buckling strength of partially stiffened compression elements in beam flanges is studied. The steel under investigation is Type 3CR12 stainless steel. Lipped channels were placed back to back to form a doubly symmetric lipped I-section. The different pIasticity reduction factors suggested in the ASCE3 and South African13 stainless steel design specification for stiffened and unstiffened compression elements are used to compare experimental results with theoretical predictions. It is concluded that the ASCE3 and South African13 stainless steel design specifications overestimate the local buckling stress in …
Direct Strength Prediction Of Cold-Formed Steel Members Using Numerical Elastic Buckling Solutions, Benjamin W. Schafer, Teoman Pekoz
Direct Strength Prediction Of Cold-Formed Steel Members Using Numerical Elastic Buckling Solutions, Benjamin W. Schafer, Teoman Pekoz
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Current design of cold-formed steel members is unduly complicated, Part of this complication arises from the need to perform elastic buckling calculations by hand. Also, complications occur in determining the effective width and resulting effective properties of members. Further, as cross-sections become more optimized (e.g., through the introduction of longitudinal stiffeners) both the elastic buckling and effective width calculations become markedly more complex. In order to investigate alternatives to current design a large amount of experimental data on flexural members of varying geometry is collected. The use of numerical elastic buckling solutions for the entire member, is investigated as an …
Shift Of The Effective Centroid Of Channel Columns, Ben Young, Kim J. R. Rasmussen
Shift Of The Effective Centroid Of Channel Columns, Ben Young, Kim J. R. Rasmussen
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
In the design of pin-ended channel columns, it is necessary to account for the shift of the effective centroid caused by local buckling. The current American Iron and Steel Institute (AISI 1996) Specification and the Australian/New Zealand Standard (AS/NZS 4600-1996) for cold-formed steel structures calculate the shift by use of effective widths. However, the ability of the effective width rules to accurately predict this shift has not been experimentally assessed. In this paper, recent tests on fixed-ended channel columns are used to obtain values of the shift of the effective centroid, including its variation with the applied load. In the …
Study On Light-Gauge Steel Roof Trusses With Rosette Connections, Pentti Makelainen, Jyrki Kesti, Olli Kaitila, Kimmo J. Sahramaa
Study On Light-Gauge Steel Roof Trusses With Rosette Connections, Pentti Makelainen, Jyrki Kesti, Olli Kaitila, Kimmo J. Sahramaa
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper describes the Rosette-joining system and its possibilities in roof-truss structures in the span range of 8 to 12 meters (26 to 39 ft). The test programme that was carried out to verify the behaviour of the Rosette-joint and the thin-walled sections is described. The test results are given and analysed where they currently exist. The results are compared with values calculated according to the 1996 U.S. (AISI) [3] code supported by a distortional buckling analysis according to the Australian / New Zealand Standard (AS) [4] and FE Analysis results.
Past Proceedings: Fourth International Conference On Case Histories In Geotechnical Engineering, St. Louis (1998), Multiple Authors
Past Proceedings: Fourth International Conference On Case Histories In Geotechnical Engineering, St. Louis (1998), Multiple Authors
International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics
No abstract provided.
Fourth International Conference On Case Histories In Geotechnical Engineering, Multiple Authors
Fourth International Conference On Case Histories In Geotechnical Engineering, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Disclaimer And Acknowledgments, University Of Missouri - Rolla
Disclaimer And Acknowledgments, University Of Missouri - Rolla
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Preface, Shamsher Prakash
Preface, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Meet The Speakers, Multiple People
Meet The Speakers, Multiple People
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Meet Our Authors, Multiple Authors
Meet Our Authors, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Authors' Addresses, Multiple Authors
Authors' Addresses, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Authors Index, Multiple Authors
Authors Index, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Paper Review Committee, Multiple Members
Paper Review Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Steering Committee, Multiple Members
Steering Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Organizing Committee, Multiple Members
Organizing Committee, Multiple Members
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Table Of Contents, Multiple Authors
Table Of Contents, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Exhibitors, Multiple People
Exhibitors, Multiple People
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Participant List, Multiple Participants
Participant List, Multiple Participants
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984), Multiple Authors
Past Proceedings: First International Conference On Case Histories In Geotechnical Engineering (1984), Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Past Proceedings: Second International Conference On Case Histories In Geotechnical Engineering (1988), Multiple Authors
Past Proceedings: Second International Conference On Case Histories In Geotechnical Engineering (1988), Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Past Proceedings: Third International Conference On Case Histories In Geotechnical Engineering (1993), Multiple Authors
Past Proceedings: Third International Conference On Case Histories In Geotechnical Engineering (1993), Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
Conference Program, Shamsher Prakash
Conference Program, Shamsher Prakash
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.
List Of Sessions, Multiple Authors
List Of Sessions, Multiple Authors
International Conference on Case Histories in Geotechnical Engineering
No abstract provided.