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Articles 3541 - 3570 of 4028

Full-Text Articles in Structural Engineering

Load And Resistance Factor Design Of Cold-Formed Steel: Calibration Of The Aisi Design Provisions, Wei-Wen Yu, Ling-En Hsiao, Theodore V. Galambos Feb 1988

Load And Resistance Factor Design Of Cold-Formed Steel: Calibration Of The Aisi Design Provisions, Wei-Wen Yu, Ling-En Hsiao, Theodore V. Galambos

CCFSS Library (1939 - present)

In the design of steel buildings, the "Allowable Stress Criteria" have long been used for the design of cold-formed steel structural members in the United States and other countries.' In view of the fact that the mathematical theory of probability, which has been so successfully applied in other fields of engineering, would seem to be equally applicable to cold-formed steel design by providing a more uniform degree of structural safety, the "Limit State Design" method based on the probabilistic concept has been used in Canada and Europe for the design of cold-formed steel structural members.' In the United States, a …


Load And Resistance Factor Design Of Cold-Formed Steel Load And Resistance Factor Design Specification For Cold-Formed Steel Structural Members With Commentary, Ling-En Hsiao, Wei-Wen Yu, Theodore V. Galambos Feb 1988

Load And Resistance Factor Design Of Cold-Formed Steel Load And Resistance Factor Design Specification For Cold-Formed Steel Structural Members With Commentary, Ling-En Hsiao, Wei-Wen Yu, Theodore V. Galambos

CCFSS Library (1939 - present)

FOREWORD This progress report contains the following two parts: Part I: Load and Resistance Factor Design Specification for Cold-Formed Steel Structural Members (pp. i-101). Part II: Commentary on the Load and Resistance Factor Design Specification for Cold-Formed Steel Structural Members (pp. 103-148). The load and resistance factor design specification proposed herein is the revised version of the design recommendations prepared in September 1985 and submitted to American Iron and Steel Institute as Seventh Progress Report. This document was prepared according to the 1986 edition of the AISI Specification for the Design of Cold-Formed Steel Structural Members. The selections of ϕ …


Load And Resistance Factor Design Of Cold-Formed Steel Comparative Study Of Design Methods For Cold-Formed Steel, Ling-En Hsiao, Wei-Wen Yu, Theodore V. Galambos Feb 1988

Load And Resistance Factor Design Of Cold-Formed Steel Comparative Study Of Design Methods For Cold-Formed Steel, Ling-En Hsiao, Wei-Wen Yu, Theodore V. Galambos

CCFSS Library (1939 - present)

Allowable Stress Design is the current method used to design cold-formed steel structural members and connections. In this design approach, factors of safety are used to compute the allowable design stresses which are compared to the actual maximum stresses that will occur in the member during the life of the structure. In recent years, the Load and Resistance Factor Design (LRFD) method has been developed for the design of hot-rolled steel shapes and the design of cold-formed steel structural members. This method is based on probabilistic and statistical techniques to account for the many uncertainties involved with the actual design. …


Technical Report El-88-18: Reliability Of The Federally Owned Water Main System, Donald V. Chase, Lindell Ormsbee, Thomas M. Walski Jan 1988

Technical Report El-88-18: Reliability Of The Federally Owned Water Main System, Donald V. Chase, Lindell Ormsbee, Thomas M. Walski

Civil and Environmental Engineering and Engineering Mechanics Faculty Publications

The reliability of the Federally Owned Water Main (FOWM) system was examined, and recommendations to improve system reliability are made. The existing FOWM system is very dependent upon three different pipe links.

The first and most important link is the Francis Scott Key Bridge river crossing. This link carries the entire FOWM supply, and if taken out of service, an alternate means of supply must be used. At present, the only alternate source of supply is through interconnections with the adjacent Arlington County, Virginia, system.

The second vital link is the 30-in. steel main which extends from the Key Bridge …


Design Of Cold-Formed Stainless Steel Structural Members Proposed Allowable Stress Design Specification With Commentary, Shin-Hua Lin, Wei-Wen Yu, Theodore V. Galambos Jan 1988

Design Of Cold-Formed Stainless Steel Structural Members Proposed Allowable Stress Design Specification With Commentary, Shin-Hua Lin, Wei-Wen Yu, Theodore V. Galambos

CCFSS Library (1939 - present)

INTRODUCTION This progress report on the design of cold-formed stainless steel structural members contains the following two parts: Part I: Proposed Specification for the Design of Cold-Formed Stainless Steel Structural Members (Third Draft). Part II: Commentary on the Proposed Specification for the Design of Cold-Formed Stainless Steel Structural Members (Second Draft). This project was sponsored by the American Society of Civil Engineers. The financial assistance provided by the Chromium Center, the Nickel Development Institute, and the Specialty Steel Industry of the United States is gratefully acknowledged. Special thanks are extended to members of the ASCE Steering Committee (Dr. Ivan M. …


Computer-Aided Analysis And Design Of Rectangular Buried Tank Walls And Its Safety Factor Evaluation Based On Yield Line Analysis, Rakiya J. Fatoohi Oct 1987

Computer-Aided Analysis And Design Of Rectangular Buried Tank Walls And Its Safety Factor Evaluation Based On Yield Line Analysis, Rakiya J. Fatoohi

Civil & Environmental Engineering Theses & Dissertations

This thesis presents the results of a study that determines the true safety factor of underground square reinforced concrete tank walls.

The walls are analyzed and designed by elastic method. The amount and distribution of the reinforcement was determined by use of the alternate design method (working stress) in compliance with all ACI code requirements. The wall's ultimate moment was computed by use of yield line theory assuming non-isotropic reinforcement. The ultimate value of the earth pressure was computed and compared with the elastic analysis and design values to give the true safety factor.

The results of this study indicate …


Structural Sensitivity Analysis On A Parallel Computer, Niu Kian Teck Jul 1987

Structural Sensitivity Analysis On A Parallel Computer, Niu Kian Teck

Civil & Environmental Engineering Theses & Dissertations

Substructuring formulation using adjoint variable approach has been developed for design sensitivity analysis and optimization of large scale structures. In this study, the procedure for statics and sensitivity analysis are re-examined to propose a programming scheme which can be implemented either in a sequential or parallel environment. The computational times of the substructuring formulation using a single processor versus multi-processors are compared to see the effectiveness of the formulation in the concurrent computing environment.


Expanding The Automated Centralized Control System At The Des Moines Area Community College, Mark David Baethke Jun 1987

Expanding The Automated Centralized Control System At The Des Moines Area Community College, Mark David Baethke

Graduate Research Papers

DMACC currently has over $1,200,000 invested in the ACCS which is connected to 21 campus buildings. The ACCS is used to save an estimated $300,000 per year in energy costs through energy conserving control of heating, ventilating, and air conditioning equipment. The ACCS also improves building life safety functions through fire alarm monitoring and serves as a significant trouble shooting tool for the mechanical maintenance staff. The initial installations of the ACCS were done after lengthly audits and studies by professional consulting firms which resulted in the recommendations for installation and expansion. These studies were limited to only a few …


Design Of Automotive Structural Components Using High Strength Sheet Steels Structural Behavior Of Members Consisting Of Flat And Curved Elements, M. Brad Parks, Wei-Wen Yu Jun 1987

Design Of Automotive Structural Components Using High Strength Sheet Steels Structural Behavior Of Members Consisting Of Flat And Curved Elements, M. Brad Parks, Wei-Wen Yu

CCFSS Library (1939 - present)

Local buckling of stiffened and unstiffened curved elements has been investigated both experimentally and analytically. Stiffened curved elements are supported along both longitudinal edges while unstiffened curved elements are supported along one longitudinal edge with the other longitudinal edge free. A series of stub column, beam, and shear tests have been performed for sections containing curved elements. The tested specimens were formed from sheet steels with yield strengths ranging from 27 to 88 ksi. The radius-to-thickness, R/t, values of the curved elements varied from 12 to 438 whereas the arc length-to-thickness, b/t, ratios ranged from 23 to 218. As a …


Steel Deck Institute, Inc. Design Manual For Composite Decks, Form Decks, And Roof Decks, Steel Deck Institute Jan 1987

Steel Deck Institute, Inc. Design Manual For Composite Decks, Form Decks, And Roof Decks, Steel Deck Institute

Steel Deck Institute (SDI) Specifications and Manuals (1939 - present)

No abstract provided.


Post-Yielding Strength Of Cold-Formed Steel Flexural Members, Muzaffer Yener Nov 1986

Post-Yielding Strength Of Cold-Formed Steel Flexural Members, Muzaffer Yener

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Aisi's 1986 Cold-Formed Steel Design Specification -- An Overview, Albert L. Johnson Nov 1986

Aisi's 1986 Cold-Formed Steel Design Specification -- An Overview, Albert L. Johnson

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


The Canadian Lrfd Standard For Cold Formed Steel Design, R. M. Schuster, D. L. Tarlton, S. R. Fox Nov 1986

The Canadian Lrfd Standard For Cold Formed Steel Design, R. M. Schuster, D. L. Tarlton, S. R. Fox

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Treatment Of Buckling In The New British Code, J. Rhodes Nov 1986

Treatment Of Buckling In The New British Code, J. Rhodes

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Behavior Of Nested Z-Shaped Purlins, Gergory W. Robertson, Carl E. Kurt Nov 1986

Behavior Of Nested Z-Shaped Purlins, Gergory W. Robertson, Carl E. Kurt

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


The Behaviour Of Thin-Walled I-Section Columns After Local Buckling, J. Loughlan, M. Nabavian Nov 1986

The Behaviour Of Thin-Walled I-Section Columns After Local Buckling, J. Loughlan, M. Nabavian

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Computer Aided Analysis Of Thin Walled Structural Components Subjected To Axial And Bending Crush Loads, H. F. Mahmood, S. H. Abed Nov 1986

Computer Aided Analysis Of Thin Walled Structural Components Subjected To Axial And Bending Crush Loads, H. F. Mahmood, S. H. Abed

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Buckling Strength Of Plates, Zu-Long Sun Nov 1986

Buckling Strength Of Plates, Zu-Long Sun

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


The New European Recommendations For The Design Of Light Gauge Steel Members, Per O. Thomasson Nov 1986

The New European Recommendations For The Design Of Light Gauge Steel Members, Per O. Thomasson

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Web Crippling Strength Of High Strength Steel Beams, Chiravut Santaputra, M. Brad Parks, Wei-Wen Yu Nov 1986

Web Crippling Strength Of High Strength Steel Beams, Chiravut Santaputra, M. Brad Parks, Wei-Wen Yu

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Column Behaviour Of Cold-Formed Hollow Sections, Peter W. Key, S. W. Hasan, Gregory J. Hancock Nov 1986

Column Behaviour Of Cold-Formed Hollow Sections, Peter W. Key, S. W. Hasan, Gregory J. Hancock

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


On The Behavior And Design Of Thin-Walled Columns Having Doubly Symmetric Sections, Srinivasan Sridharan Nov 1986

On The Behavior And Design Of Thin-Walled Columns Having Doubly Symmetric Sections, Srinivasan Sridharan

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Inelastic Flexural Stability Of Corrugations, Raymond L. Cary Nov 1986

Inelastic Flexural Stability Of Corrugations, Raymond L. Cary

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Cold-Formed Steel Compression Members Embedded In Grain, Ahmed Sabry, George Abdel-Sayed Nov 1986

Cold-Formed Steel Compression Members Embedded In Grain, Ahmed Sabry, George Abdel-Sayed

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


On The Strength And Stability Of Light Gauge Silos, John Michael Rotter Nov 1986

On The Strength And Stability Of Light Gauge Silos, John Michael Rotter

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Features Of Aisi's 1986 Cold-Formed Steel Design Manual, Calvin Robert Clauer Nov 1986

Features Of Aisi's 1986 Cold-Formed Steel Design Manual, Calvin Robert Clauer

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Mbma's New Low-Rise Building Systems Manual, Dale C. Perry, Joe N. Nunnery Nov 1986

Mbma's New Low-Rise Building Systems Manual, Dale C. Perry, Joe N. Nunnery

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Literature Survey Of Cold-Formed Structures, Roger A. Laboube Nov 1986

Literature Survey Of Cold-Formed Structures, Roger A. Laboube

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Local Buckling Of Curved Elements, Chiravut Santaputra, M. Brad Parks, Wei-Wen Yu Nov 1986

Local Buckling Of Curved Elements, Chiravut Santaputra, M. Brad Parks, Wei-Wen Yu

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.


Earthquake Response Of Locally Buckled Frames, George E. Blandford, Gordon C. Glass Nov 1986

Earthquake Response Of Locally Buckled Frames, George E. Blandford, Gordon C. Glass

CCFSS Proceedings of International Specialty Conference on Cold-Formed Steel Structures (1971 - 2018)

No abstract provided.