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- CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018) (45)
- American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present) (7)
- CCFSS Newsletters (1999 - 2008) (2)
- CCFSS Technical Bulletins (1993 - 2020) (2)
- Civil, Architectural and Environmental Engineering Faculty Research & Creative Works (2)
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- Civil and Environmental Engineering and Engineering Mechanics Faculty Publications (1)
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- Steel Deck Institute (SDI) Specifications and Manuals (1939 - present) (1)
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Articles 31 - 60 of 64
Full-Text Articles in Structural Engineering
Lateral Buckling Of Prismatic Members About An Imposed Axis Of Rotation, Leopold K. Sokol
Lateral Buckling Of Prismatic Members About An Imposed Axis Of Rotation, Leopold K. Sokol
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper deals with the lateral buckling of prismatic members whose position of the axis of rotation is imposed by the conditions of lateral support. As a function of the type of connection with the lateral support, the rotation may be free or hindered (elastic end restraint). This may concern, for instance, the case of a purlin stabilized by a roof structure or of a column stabilized by an external cladding or by another type of efficient continuous bracing. Usually, the check of this type of instability is complex and leads to sophisticated and tedious computations. In order to avoid …
Elastic-Plastic Interactive Buckling Of Thin-Walled Steel Compression Members, Dan Dubina, Viorel Ungureanu
Elastic-Plastic Interactive Buckling Of Thin-Walled Steel Compression Members, Dan Dubina, Viorel Ungureanu
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
In the actual design codes the interaction formula for local and overall buckling modes of thin-walled steel compression (TWSC) members, the effect of local buckling. is introduced by means of effective strength of short members. This paper proposes to replace, into the Ayrton-Perry interaction formula, the short member "effective" strength, which is based on the "effective width" approach by the plastic strength evaluated by means of local plastic mechanism analysis. There are some papers by Murray et al. [1,2,3], in which the plastic mechanisms corresponding to the local buckling of plates and TWSC members in compression are analysed. On this …
Flexural Behavior Of Profiled Composite Beams, Jun-Yep Song, Young Bong Kwon
Flexural Behavior Of Profiled Composite Beams, Jun-Yep Song, Young Bong Kwon
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The behavior of composite beams, which are composed of cold-formed steel sheeting and normal strength concrete, has been studied. A series of flexural tests of composite beams has been executed and analytical methods to trace the nonlinear behavior of composite beams have been developed. The nonlinear moment-curvature relation of the composite beam has been described using a simple power model and cross section analysis procedure. The load-deflection behavior of the composite beam simulated by the step-by-step numerical integration method has been compared with test results.
The 1999 Supplement To The Aisi Design Specification, Roger L. Brockenbrough
The 1999 Supplement To The Aisi Design Specification, Roger L. Brockenbrough
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The AISI Committee on Specifications for Cold-Formed Steel recently developed Supplement No. 1 to the 1996 Specification for the Design of Cold-Formed Steel Structural Members. The Supplement reflects new information developed through research projects, brings provisions in agreement with other specifications where appropriate, and also provides certain clarifications and corrections. The Supplement and the Specification have both been recently accepted as ANSI standards. The present paper reviews the major items included in the Supplement. The Committee continues to sponsor research projects aimed at developing a better understanding of particular areas of cold-formed steel behavior and more comprehensive design rules. Projects …
Design Of Cold-Formed Steel Plain Channels, Fang Yiu, Teoman Pekoz
Design Of Cold-Formed Steel Plain Channels, Fang Yiu, Teoman Pekoz
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper gives an overview of the design procedures formulated for plain channels. These formulations are based on experimental and finite element studies. The scope of the work covers laterally braced beams, columns and beam-columns of cross-sections in the range of practical applications by the industry. The recommendations treat members that are made up of elements that may be in the post-buckling or post yielding range.
Mechanical Properties Of Stainless Steel Lipped Channels, M. Macdonald, J. Rhodes, G. T. Taylor
Mechanical Properties Of Stainless Steel Lipped Channels, M. Macdonald, J. Rhodes, G. T. Taylor
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper describes and discusses the results obtained from a series of tensile tests performed on cold formed stainless steel Type 304 members of lipped channel cross-section. Standard tensile tests on coupons cut from the webs of the sections were carried out, as were full section tensile tests. Ramberg-Osgood type curves based on the procedure suggested in the ASCE design code were fitted to the stress-strain results and these are compared with the experimental results and Ramberg-Osgood type curves derived on an alternative basis.
Distortional Buckling Of Cold-Formed Stainless Steel Compression Members, A. Liang, G. J. Van Den Berg, Rudolph Laubscher
Distortional Buckling Of Cold-Formed Stainless Steel Compression Members, A. Liang, G. J. Van Den Berg, Rudolph Laubscher
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
In this paper the critical local buckling strength of cold-formed stainless steel compression members, with special emphasis on the method developed by Lau and Hancock for distortional buckling is discussed. Cold-formed stainless steel channel and I-section members under axial compression in distortional buckling are analysed. A control experiment is carried out for comparing analytical methods with a finite element method and experimental values.
Eccentrically Loaded Bolted Connections For Type 304 And 3cr12 Stainless Steel Lipped Channels, P. Van Tonder, Q. C. Oliphant, G. J. Van Den Berg
Eccentrically Loaded Bolted Connections For Type 304 And 3cr12 Stainless Steel Lipped Channels, P. Van Tonder, Q. C. Oliphant, G. J. Van Den Berg
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
In this paper the results of a study on eccentrically loaded bolted connections in lipped channels are presented. The steels chosen for this study are AISI Type 304 and Type 3CR12 stainless steel. It is concluded in this investigation that an acceptable prediction of the strength of eccentrically loaded bolted connections of stainless steel lipped channels may be obtained through the combination between the eccentric loaded equation and the normal bolted connection equations for stainless steel.
The Development Of An Australian Standard For Stainless Steel Structures, Kim J. R. Rasmussen
The Development Of An Australian Standard For Stainless Steel Structures, Kim J. R. Rasmussen
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The paper describes the recent development of an Australian standard for the design of cold-formed stainless steel structures. The standard is based on the ANSI/ASCE-8 (1991) Specification for the Design of Cold-formed Stainless Steel Structural Members but augmented to provide rules for cold-formed hollow section members and welded connections. Explicit design rules for the flexural buckling of compression members are also implemented. Further, mechanical properties are included for weldable chromium steels and austenitic-ferritic (duplex) alloys, which are in addition to the alloys included in the ANSII ASCE-8 Specification. The purpose of this paper is to summarise the new rules and …
A Design Approach For Complex Stiffeners, Andrew T. Sarawit, Teoman Pekoz
A Design Approach For Complex Stiffeners, Andrew T. Sarawit, Teoman Pekoz
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper presents a design approach for laterally braced cold-formed steel flexural members with edge stiffened flanges other then simple lips. The design method for flexural members given by Schafer and Pekoz (1999) is used here for designing these complex stiffeners. The method integrates distortional buckling into the unified effective width approach currently used in most cold-formed steel design specifications. A finite element method was first used to investigate the post-buckling behavior and carry out initial geometric imperfection sensitivity studies for various types of stiffeners. Then parametric studies were carried out for different types of stiffeners to compare the moment …
Buckling Of Cold Formed Stainless Steel Columns Under Concentric And Eccentric Loading, J. Rhodes, M. Macdonald, W. Mcniff
Buckling Of Cold Formed Stainless Steel Columns Under Concentric And Eccentric Loading, J. Rhodes, M. Macdonald, W. Mcniff
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper describes the results obtained from a series of compression tests performed on cold formed stainless steel Type 304 columns of lipped channel cross-section. The cross-section dimensions, the column length and the eccentricity of the applied compressive load are varied to examine the effects on the buckling load capacity of the columns. The results obtained are compared to those obtained from the relevant design specifications in America and in Europe, and conclusions are drawn on the basis of the comparisons.
Calibration Of Cold Formed Steel Shear Equations, B. Craig, R. M. Schuster
Calibration Of Cold Formed Steel Shear Equations, B. Craig, R. M. Schuster
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
There is a difference in the shear design criteria between the Canadian cold formed steel design Standard, CSA S136-94 (from here on referred to as S136) and the American Iron and Steel Institute Specification for the design of cold formed steel structures, AISI-96 (from here on referred to as AISI). The focus of this paper was to carry out the appropriate calibrations for the factor of safety, Ω, and the resistance factor, Ï•, using the current design approaches of both countries. In the case of the S136 Standard, only the resistance factor was determined. It was assumed at the outset …
Spatial Buckling Behavior Of High-Rise Rack Frames, Lip H. Teh, Gregory J. Hancock, Murray J. Clarke
Spatial Buckling Behavior Of High-Rise Rack Frames, Lip H. Teh, Gregory J. Hancock, Murray J. Clarke
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The paper investigates the global elastic buckling behavior of a high-rise adjustable pallet rack frame composed of thin-walled open sections. It is concluded that the simple element used in many commercial programs for 3D frame analysis is not sufficiently refined for accurate linear buckling analyses of high-rise rack frames.
Structural Stability Of Braced Scaffolding And Formwork With Spigot Joints, John Enright, Robert Harriss, Gregory J. Hancock
Structural Stability Of Braced Scaffolding And Formwork With Spigot Joints, John Enright, Robert Harriss, Gregory J. Hancock
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Steel Scaffolding systems are often constructed from cold-formed circular hollow sections. The beams of this system are normally called "ledgers" and the columns are normally called "standards". To allow the system to be quickly erected on site, "spigot joints" are inserted in the standards. The spigot joints consist of smaller diameter tubes which slide into the larger diameter tubes to provide a safe connection under gravity load. However, the spigot joints may have a lack of fit, and when located midway between the ledgers, they can cause significant out-of-straightness in a standard. This PΔ effect may weaken the standard as …
Automated Design Of Steel Trusses, B. Mobasher, S. D. Rajan, S. Y. Chen
Automated Design Of Steel Trusses, B. Mobasher, S. D. Rajan, S. Y. Chen
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Designing an automated procedure for the optimal design of any structural system poses special challenges. Converting this methodology into a practical tool is even more challenging. In this research, a point-and-click software system is developed for the optimal design of roof truss systems. The starting point is a roof template containing minimal user input - outline of the truss, truss spacing, load information, and cost figures. A ground structure is constructed as the starting point of the design iterations. The Genetic Algorithm (GA) is used as the optimization tool to drive the design changes. Using the database of available sections, …
Dynamic Behaviour Of Floors With Cold-Formed Steel Joists, L. Xu, Z. Ling, W. C. Xie, R. M. Schuster
Dynamic Behaviour Of Floors With Cold-Formed Steel Joists, L. Xu, Z. Ling, W. C. Xie, R. M. Schuster
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Presented in this paper are the results of a recent study carried out at the University of Waterloo on the performance of residential floors supported by cold-formed steel C-section floor joists. Both static and dynamic tests were conducted on steel floors with different span lengths based on different design criteria. The purpose of the static tests was to evaluate the stiffuess and load sharing among the joists, and the purpose of the dynamic tests was to evaluate the dynamic characteristics such as frequencies of the floor systems. To identify the critical parameters that contribute to the control of floor vibration, …
L-Header Testing, Evaluation And Design Methodology, Roger A. Laboube, N. R. Elhajj
L-Header Testing, Evaluation And Design Methodology, Roger A. Laboube, N. R. Elhajj
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Cold-formed steel L-shaped headers have gained popularity over the past few years due to their simplicity and cost effectiveness. While cold-formed steel conventional headers are widely used and can be designed for most applications, often it is necessary to reduce cost by using less material and labor hours. The L-shaped header provides both, a fast and economical solution to safely transfer applied loads to other structural elements in a building. As the name suggests, the main components of an L-shaped header is a piece of cold-formed steel formed into a shape resembling the letter L. An L-header assembly consists of …
Optimum Design Of Cold Formed Steel Residential Roof Trusses, L. Xu, H. Min
Optimum Design Of Cold Formed Steel Residential Roof Trusses, L. Xu, H. Min
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
A computer-based optimal design approach for residential roof trusses using cold-formed steel C-sections is presented. The truss design is based on CSA S136-94 and the truss design guide published by the American Iron and Steel Institute and the Canadian Sheet Steel Building Institute. A genetic algorithm was adopted to obtain the minimum cost design with consideration to truss topology and member size simultaneously. The presented design examples demonstrate the applicability and efficiency ofthe proposed approach.
Web Crippling Data And Calibrations Of Cold Formed Steel Members, R. M. Schuster, B. Beshara
Web Crippling Data And Calibrations Of Cold Formed Steel Members, R. M. Schuster, B. Beshara
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.
A Design Approach For Complex Stiffeners, Andrew T. Sarawit
A Design Approach For Complex Stiffeners, Andrew T. Sarawit
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.
Ccfss Technical Bulletin August 2000, Wei-Wen Yu Center For Cold-Formed Steel Structures
Ccfss Technical Bulletin August 2000, Wei-Wen Yu Center For Cold-Formed Steel Structures
CCFSS Technical Bulletins (1993 - 2020)
No abstract provided.
Ccfss News August 2000, Wei-Wen Yu Center For Cold-Formed Steel Structures
Ccfss News August 2000, Wei-Wen Yu Center For Cold-Formed Steel Structures
CCFSS Newsletters (1999 - 2008)
No abstract provided.
Distoritonal Buckling Of Cold-Formed Steel Columns, Benjamin W. Schafer
Distoritonal Buckling Of Cold-Formed Steel Columns, Benjamin W. Schafer
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.
A Design Guide For Standing Seam Roof Panels, American Iron And Steel Institute
A Design Guide For Standing Seam Roof Panels, American Iron And Steel Institute
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.
Stress And Thermal Analysis Of The Lotec Carrier, Scott Thomas
Stress And Thermal Analysis Of The Lotec Carrier, Scott Thomas
Honors Capstone Projects and Theses
No abstract provided.
Destructive And Non-Destructive Testing Of Bridge J857 Phelps County, Missouri : Feasibility Study On Damage Detection Of Rc Structures Using Dynamic Signature Tests, Genda Chen, Xinbao Yang, Huimin Mu, Antonio Nanni
Destructive And Non-Destructive Testing Of Bridge J857 Phelps County, Missouri : Feasibility Study On Damage Detection Of Rc Structures Using Dynamic Signature Tests, Genda Chen, Xinbao Yang, Huimin Mu, Antonio Nanni
Civil, Architectural and Environmental Engineering Faculty Research & Creative Works
This report presents the results of a research program aimed at investigating the constructability and effectiveness of externally bonded FRP strengthening systems for improving the flexural capacity of bridge decks and piers. The joint effort of two universities, industry, and a state DOT provided the premise for a successful outcome. Bridge J857 was constructed in 1932 and was scheduled for demolition in the fall of 1998 due to highway realignment. Two of the three solid reinforced concrete (RC) decks were strengthened using two FRP systems namely, near-surface mounted carbon FRP (CFRP) rods and surface bonded CFRP sheets. Bridge decks were …
Ccfss Technical Bulletin February 2000, Wei-Wen Yu Center For Cold-Formed Steel Structures
Ccfss Technical Bulletin February 2000, Wei-Wen Yu Center For Cold-Formed Steel Structures
CCFSS Technical Bulletins (1993 - 2020)
No abstract provided.
Ccfss News February 2000, Wei-Wen Yu Center For Cold-Formed Steel Structures
Ccfss News February 2000, Wei-Wen Yu Center For Cold-Formed Steel Structures
CCFSS Newsletters (1999 - 2008)
No abstract provided.
Governing Yield Modes For Common Bolted And Nailed Wood Connections, Brian J. Tucker, David Pollock, Kenneth J. Fridley, Jeffrey J. Peters
Governing Yield Modes For Common Bolted And Nailed Wood Connections, Brian J. Tucker, David Pollock, Kenneth J. Fridley, Jeffrey J. Peters
Faculty Publications - Biomedical, Mechanical, and Civil Engineering
Connections in wood structures are important when designing for ductility. The 1997 Uniform Building Code has taken this into consideration when designating wind and earthquake load duration factors for connections. Factors of 1.6 or 1.33 may be applied to the connection strength, depending on the type of yield mode exhibited by the connection, which may be determined from the yield limit equations supplied in the National Design Specification for Wood Construction (NDS). The NDS provides the designer with multiple tables containing capacities for various common connections. Unfortunately, yield modes are not published along with tabulated capacities. Therefore, the designer must …
Effect Of Anchorage And Sheathing Configuration On The Cyclic Response Of Long Steel-Frame Shear Walls, American Iron And Steel Institute
Effect Of Anchorage And Sheathing Configuration On The Cyclic Response Of Long Steel-Frame Shear Walls, American Iron And Steel Institute
American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)
No abstract provided.