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Full-Text Articles in Engineering
Design Of Channels Against Distortional Buckling, Y. B. Kwon, Gregory J. Hancock
Design Of Channels Against Distortional Buckling, Y. B. Kwon, Gregory J. Hancock
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Thin-walled lip-stiffened channel columns composed of high strength steel may fail in a distortional mode involving movement of the lip stiffener perpendicular to the flange plate it supports. In this report, test results for a simple lipped channel section(CH1) and an intermediate stiffened channel section (CH2) of thickness of approximately 1.1 mm (0.043 in) and 550 MPa (79.8 ksi) steel and undergoing distortional or mixed local-distortional buckling failure are compared with different design methods. The design methods compared are Australian Standard AS1538, EC3 Partl/ Annexe A, the ECCS Recommendations and the AISI Specification. In addition, new methods based on a …
Distortional Buckling Of Cold-Formed Steel Z-Section Columns, P. Charnvarnichborikarn, Dimos Polyzois
Distortional Buckling Of Cold-Formed Steel Z-Section Columns, P. Charnvarnichborikarn, Dimos Polyzois
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Current North American guidelines for the design of cold-formed steel members consider the web of cold-formed steel sections under direct compression to be a fully stiffened element. This, however, may not be true if the flanges cannot provide sufficient restraint to the web. In this case, instability of the web element may cause distortional failure of the flange-edge stiffener component which may limit the load-carrying capacity of these sections with very little post-buckling strength being realized. In the present paper, the effect of web buckling on the load-carrying capacity of Z-sections with partially stiffened flanges is examined. The current design …
Flexibly Connected Thin-Walled Space Frame Stability, Sundar Chandramouli, Shien T. Wang, George E. Blandford
Flexibly Connected Thin-Walled Space Frame Stability, Sundar Chandramouli, Shien T. Wang, George E. Blandford
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The elastic stability of a cubic space frame composed of cold-formed steel members is studied for various bending and warping rigidities. A finite element technique is used to perform a parametric study of the elastic stability response of the flexibly connected frame. The results are compared with previously published observations for hot-rolled steel sections. The criterion used for deciding the significance of warping for hot-rolled sections is not found to be applicable to cold-formed sections.
Shah Alam Sports Complex Design And Construction Of Unistrut Space-Frame Roof Structure, Khaldoun Mhaimeed, Sun Chien Hsiao
Shah Alam Sports Complex Design And Construction Of Unistrut Space-Frame Roof Structure, Khaldoun Mhaimeed, Sun Chien Hsiao
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The Shah Alam Sports Complex is a $100-million multiuse sports facility in Selangor, Malysia. The main feature of this complex is a 72000-seat multisport stadium. Seating on both sides of the stadium will be covered by a pair of barrel-vaulted acrylic sky roofs. Each roof is structurally supported by a Unistrut Space-Frame which in tum is supported at three of its four edges with a free span of 931 feet (284 m). The frame is cantilevered from the back 226 feet (69 m) over the seats. In this paper, design philosophy to satisfy serviceability and ultimate limit states is discussed. …
Calibration Of A Bending Model For Cold-Formed Sections, A. De Martino, A. Ghersi, Frederico M. Mazzolani
Calibration Of A Bending Model For Cold-Formed Sections, A. De Martino, A. Ghersi, Frederico M. Mazzolani
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
The calibration procedure of a numerical model based on the simulation of the moment-curvature relation for cold-formed steel beams is presented. The results of bending tests on beams with double-channel cross-section are used to assess the proper values to the parameters which quantify the model.
Observations And Comments Pertaining To Can/Csa-S136-M89, Aaron S. Dinovitzer, Majid Sohrabpour, R. M. Schuster
Observations And Comments Pertaining To Can/Csa-S136-M89, Aaron S. Dinovitzer, Majid Sohrabpour, R. M. Schuster
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
Contained in this paper are the results of two separate studies, namely, 1) partially stiffened compressive elements of both edge and single intermediate stiffened flanges and 2) deflection determination of multi-web deck profiles. Both of these studies were based on the Canadian cold formed steel design standard (CAN/CSA-S 136-M89), with the results also applicable to the AISI specification. In the case of partially stiffened compressive elements, discontinuities in effective width estimates for sections with similar flanges and stiffeners were observed, resulting from a sudden change in the behavioural states. Recommendations are presented to rectify this discontinuity and at the same …
Recent Developments In Cold Formed Steel, Robert W. Dannemann
Recent Developments In Cold Formed Steel, Robert W. Dannemann
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
During the last fifteen years the author has been working in the development of new products in cold formed steel, mainly in building applications. Cold formed steel makes possible practically an infinite variety of shapes, one for each need and function. This possibility is a continuous challenge for designers in finding, among many alternatives, the optimal solution for each problem. The author describes briefly a set of six proposals, which are either an already tested and proven product, or just its phase of design. As in any human doing, the author is conscious that these proposals may be accomplished and …
The 1989 Edition Of The Canadian Cold Formed Steel Design Standard, R. M. Schuster
The 1989 Edition Of The Canadian Cold Formed Steel Design Standard, R. M. Schuster
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
This paper presents excerpts from the latest edition of the Canadian Standard for the design of cold formed steel structural members (CAN/CSA-SI36-M89). Considerable technical changes, reflecting the latest research developments, have been incorporated into this edition of the Standard. These changes are based on an increased understanding of the behaviour of cold formed steel structures, members, and elements and of cold formed steel as a structural material. Some of the more significant technical changes of the Standard are discussed in greater detail. Comparisons with the Standard's predecessor (CAN3-S136-M84), and whenever appropriate, with the 1986 AISI Specifications are also made.
Test Of A Full Scale Roof Truss, Yao - Jie Guo, Shan-Feng Fang
Test Of A Full Scale Roof Truss, Yao - Jie Guo, Shan-Feng Fang
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
In order to obtain information of ultimate capacity and destructive characteristics of a roof truss, the test of a full scale roof truss was carried out based on the test results this article has analysed the destructive mechanism and presented the suggestions of improvement to design and fabrication.
An Experimental Study Of Shear Wall Units, Atsuo Tanaka, Hiroshi Hasuda, Kazumi Sakae, Tutomu Tumori
An Experimental Study Of Shear Wall Units, Atsuo Tanaka, Hiroshi Hasuda, Kazumi Sakae, Tutomu Tumori
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Down-Aisle Stability Of Rack Structures, J. Michael Davies
Down-Aisle Stability Of Rack Structures, J. Michael Davies
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
No abstract provided.
Racking Performance Of Plasterboard-Clad Steel Stud Walls, B. Golledge, T. Clayton, G. Reardon
Racking Performance Of Plasterboard-Clad Steel Stud Walls, B. Golledge, T. Clayton, G. Reardon
CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)
It is recognised that structural design efficiency in domestic and similar structures can be improved when the composite behaviour and contribution of all materials in the permanent structure can be fully recognised in the structural design of the frame. The ability to achieve this Improvement is currently limited by the need 10 rely on empirical test results for standardised building elements when considering the composite behaviour of the entire structure. The existing test methodology for determining the shear strength of plasterboard lined steel stud walls leads to an excessively conservative design of the complete structure. Since the test configuration is …