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Articles 5101 - 5130 of 7869

Full-Text Articles in Civil and Environmental Engineering

Wave Propagation In The Ground And Isolation Measures, W. A. Haupt Apr 1995

Wave Propagation In The Ground And Isolation Measures, W. A. Haupt

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

The first part of this report deals with wave propagation in the ground. Special attention is given to the radiation of waves from a source and on the effect of layering or continuous variation of the shear modulus in the soil on travelling waves. In the second part, vibration isolation measures are described, such as open or infilled trenches and rows of bore holes or piles. The results of different theoretical and experimental investigations are compared. Finally, recently developed isolation measures are presented.

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Seismic Design Of Pile Foundations: Structural And Geotechnical Issues, Geoffrey R. Martin, Ignatius Po Lam Apr 1995

Seismic Design Of Pile Foundations: Structural And Geotechnical Issues, Geoffrey R. Martin, Ignatius Po Lam

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

Research on soil-pile-structure interaction under dynamic loading over the past 20 years has led to a variety of analysis approaches of varying complexity to address a range of dynamic problems. Many of these analysis approaches have been adapted for use for the seismic design of pile foundations. In this paper, the various analysis methods are only briefly reviewed. The focus of discussion is on design concepts and issues more routinely used or encountered by structural engineers during seismic design of new or retrofitted pile foundation systems representative of those used for bridges and buildings.

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Preliminary Report On The Damage Of Buildings And Houses Due To The Great Hanshin (Kobe) Earthquake Of January 17, 1995, Yoshihiro Sugimura, Madan B. Karkee Apr 1995

Preliminary Report On The Damage Of Buildings And Houses Due To The Great Hanshin (Kobe) Earthquake Of January 17, 1995, Yoshihiro Sugimura, Madan B. Karkee

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

More than 5,400 persons were killed during the great Hanshin earthquake that occurred early in the morning (5:46 a.m.) of January 17, 1995. About 90% of the dead, most of which were aged persons, were crushed under wooden houses and other residential buildings damaged by the strong shock. People could not escape falling ceilings and furnitures because they were still in their sleep. In addition, the shock produced by the active fault directly under the area was very sudden. Markedly heavy damage was concentrated in the approximately 500m wide belt region lying between the Rokko base rock zone and the …

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General Report —Session I: Static And Dynamic Engineering Soil Parameters And Constitutive Relations Of Soils, Peter M. Byrne, Li Yan Apr 1995

General Report —Session I: Static And Dynamic Engineering Soil Parameters And Constitutive Relations Of Soils, Peter M. Byrne, Li Yan

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.

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General Report —Session Ix: Geotechnical Analysis Of Recent Earthquakes, Walter W. Hays, C. Rojahn, A. Ansal Apr 1995

General Report —Session Ix: Geotechnical Analysis Of Recent Earthquakes, Walter W. Hays, C. Rojahn, A. Ansal

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.

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General Report — Session Xi: Engineering Vibrations And Solutions, K. Rainer Massarsch, C. Madshus, A. Bodare Apr 1995

General Report — Session Xi: Engineering Vibrations And Solutions, K. Rainer Massarsch, C. Madshus, A. Bodare

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.

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General Report — Session Xiv: Northridge Earthquake, January 17, 1994, G. L. Hempen Apr 1995

General Report — Session Xiv: Northridge Earthquake, January 17, 1994, G. L. Hempen

International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics

No abstract provided.

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Interaction Buckling Of Flange, Edge Stiffener And Web Of C-Sections In Bending, Colin A. Rogers, R. M. Schuster Apr 1995

Interaction Buckling Of Flange, Edge Stiffener And Web Of C-Sections In Bending, Colin A. Rogers, R. M. Schuster

CCFSS Library (1939 - present)

No abstract provided.

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Ccfss Technical Bulletin February 1995, Wei-Wen Yu Center For Cold-Formed Steel Structures Feb 1995

Ccfss Technical Bulletin February 1995, Wei-Wen Yu Center For Cold-Formed Steel Structures

CCFSS Technical Bulletins (1993 - 2020)

No abstract provided.

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Metal Stud Manufacturer's Association Catalog, Metal Stud Manufacturer's Association Feb 1995

Metal Stud Manufacturer's Association Catalog, Metal Stud Manufacturer's Association

CCFSS Library (1939 - present)

No abstract provided.

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Ccfss News February 1995, Wei-Wen Yu Center For Cold-Formed Steel Structures Feb 1995

Ccfss News February 1995, Wei-Wen Yu Center For Cold-Formed Steel Structures

CCFSS Newsletters (1999 - 2008)

No abstract provided.

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Thermal Design Guide For Exterior Walls, Steel In Residential Construction Advisory Group Jan 1995

Thermal Design Guide For Exterior Walls, Steel In Residential Construction Advisory Group

American Iron and Steel Institute (AISI) Specifications, Standards, Manuals and Research Reports (1946 - present)

No abstract provided.

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Steel Deck Institute Design Manual For Composite Decks, Form Decks, Roof Decks, And Cellular Deck Floor Systems With Electrical Distribution, Steel Deck Institute Jan 1995

Steel Deck Institute Design Manual For Composite Decks, Form Decks, Roof Decks, And Cellular Deck Floor Systems With Electrical Distribution, Steel Deck Institute

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

No abstract provided.

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Steel Deck Institute Diaphragm Design Manual Second Edition, Larry D. Luttrell Jan 1995

Steel Deck Institute Diaphragm Design Manual Second Edition, Larry D. Luttrell

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

This manual has evolved from the first edition of the Steel Deck Diaphragm Design Manual (DDM01) and is based on research, testing and analysis done at West Virginia University since 1965. That work, sponsored by the Steel Deck Institute and its member companies, is under the direction of Dr. larry D. Luttrell who is the technical advisor to the Steel Deck Institute. The Institute is very grateful to Dr. Luttrell for his un~iring efforts and continued interest in this project.

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Compression Response Of Cracked Reinforced Concrete, Abdeidjelil Belarbi, Thomas T.C. Hsu Jan 1995

Compression Response Of Cracked Reinforced Concrete, Abdeidjelil Belarbi, Thomas T.C. Hsu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

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Teaching Civil Engineering Design: Observations And Experiences, Charles Darwin Morris, Roger A. Laboube Jan 1995

Teaching Civil Engineering Design: Observations And Experiences, Charles Darwin Morris, Roger A. Laboube

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Civil engineering design is an inspired activity. It offers the engineer a high degree of autonomy to conceive or create a unique, state-of-the-art, functional, costeffective facility. Civil engineering design calls on the talent of the engineer to balance the client's end-use requirements and financial resources, with the safety ofthe occupants. Because the process of engineering design has such a vast degree of freedom, teaching the concepts inherent in design is a very challenging, and at times frustrating, endeavor. The present paper discusses the many facets of the senior design course developed at the University of Missouri- Rolla to include a …

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Edge Strength Of Window Glass By Mechanical Test, Abdeidjelil Belarbi Jan 1995

Edge Strength Of Window Glass By Mechanical Test, Abdeidjelil Belarbi

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.

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Methsnotrophic Biodegradation Of Trichloroethylene In A Hollow Fiber Membrane Bioreactor, Carol E. Aziz, Mark W. Fitch, Larry K. Linquist, Jonathan G. Pressman, George Georgiou, Gerald E. Speitel Jan 1995

Methsnotrophic Biodegradation Of Trichloroethylene In A Hollow Fiber Membrane Bioreactor, Carol E. Aziz, Mark W. Fitch, Larry K. Linquist, Jonathan G. Pressman, George Georgiou, Gerald E. Speitel

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Biodegradation of Trichloroethlyene (TCE) in a Hollow Fiber Membrane Bioreactor Was Investigated using a Mutant of the Methanotrophic Bacteria, Methylosinus Trichosporium 0B3b. Contaminated Water Flowed through the Lumen (I.e., Fiber Interior), and the Bacteria Circulated through the Shell Side of the Membrane Module and an External Growth Reactor. in Mass Transfer Studies with a Radial Cross-Flow Membrane Module, 78.3-99.9% of the TCE Was Removed from the Lumen at Hydraulic Residence Times of 3-15 Min in the Lumen and the Shell. in Biodegradation Experiments, 80-95% of the TCE Was Removed from the Lumen at Hydraulic Residence Times of 5-9 Min in …

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Finite Element Studies On Lipped Channel Flexural Members, Maria E. Moreyra, Teoman Pekoz Oct 1994

Finite Element Studies On Lipped Channel Flexural Members, Maria E. Moreyra, Teoman Pekoz

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

This paper is second in a series of three papers describing the research sponsored by the American Iron and Steel Institute. Physical test results described in the first paper combined with the finite element solution parametric studies described in this paper were used in the third paper to develop improved design procedures for edge stiffened elements.

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Analysis And Design Of Continuous Sandwich Beams, Paavo Hassinen, Lassi Martikainen Oct 1994

Analysis And Design Of Continuous Sandwich Beams, Paavo Hassinen, Lassi Martikainen

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

Sandwich panels are composed of two thin face layers and a lightweight core between them. Panels are used to carry large bending moments and axial forces, which capacity is reduced, if imperfections, for example initial deflections or transverse loads, appear in the face layers. At intermediate supports the panel is stressed by a high bending moment and, in addition, by a concentrated lateral support reaction. The strength against the simultaneous bending moment and support reaction depends on the bending stiffness and on the bending and buckling strength of the face and on the compressive strength of the core. The paper …

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A Design Procedure For Lipped Channel Flexural Members, Maria E. Moreyra, Teoman Pekoz Oct 1994

A Design Procedure For Lipped Channel Flexural Members, Maria E. Moreyra, Teoman Pekoz

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

This paper is third in a series of three papers describing the research sponsored by the American Iron and Steel Institute. Physical test results described in the first paper combined with the finite element solution parametric studies described in the second paper were used in this paper to develop improved design procedures for edge stiffened elements.

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Local Buckling Of Stiffened And Unstiffened Elements Under Nonuniform Compression, Venkatakrishnan Kalyanaraman, P. Jayabalan Oct 1994

Local Buckling Of Stiffened And Unstiffened Elements Under Nonuniform Compression, Venkatakrishnan Kalyanaraman, P. Jayabalan

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

Thin plates subjected to linearly varying inplane compression in one direction may undergo local buckling before failure. An analytical procedure is presented for evaluating the local buckling strength based on which equations for the local buckling stress of unstiffened and stiffened elements are presented.

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The Compressional Behaviour Of Perforated Elements, J. Rhodes, Falk D. Schneider Oct 1994

The Compressional Behaviour Of Perforated Elements, J. Rhodes, Falk D. Schneider

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

The behaviour of stub columns with a series of different perforation patterns is examined on the basis of tests. The tests concentrate on plain channel cross sections with perforation layouts systematically varied to examine the effects of perforation position, dimensions and number on the section performance. The application of existing cold formed steel design codes to perforated members is examined on the basis of comparison with the tests, and various modifications to the design codes are considered to take perforations into account These are described and the comparison with test results is illustrated.

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Fatigue Behaviour Of Cold-Formed Steel Sections, Dimos Polyzois, Glenn Morris, S. K. Hassan Oct 1994

Fatigue Behaviour Of Cold-Formed Steel Sections, Dimos Polyzois, Glenn Morris, S. K. Hassan

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

In the expected life span of a transmission tower, the members are subjected to a large number of alternating wind applications. Fatigue behaviour due to repeated loading must therefore be considered in design. This paper presents the fatigue-test results for 52 cold-formed steel members. The results obtained can be used to establish additional guidelines for fatigue design of cold-formed steel sections.

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Pallet Racking Using Cold-Reduced Steel, J. S. Cowen, J. Michael Davies Oct 1994

Pallet Racking Using Cold-Reduced Steel, J. S. Cowen, J. Michael Davies

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

Codes of practice for the design of cold-formed sections have generally included a requirement for the coil material to possess a specified amount of ductility prior to forming. The scientific basis for such ductility requirements is shrouded in historical mystery but code drafting committees have been reluctant to remove these requirements in the absence of good reason. However, very low ductility steels have been used for the manufacture of cold-formed steel components for many years by the two leading UK manufacturers of storage racks without this lack of ductility giving rise to any problems during either manufacture or service. This …

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Residual Stresses In Cold Formed Steel Sections, G. Roy, Dimos Polyzois, M. A. Mohamedien Oct 1994

Residual Stresses In Cold Formed Steel Sections, G. Roy, Dimos Polyzois, M. A. Mohamedien

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

Initial or residual stresses are considered one of the major factors that affect the design of the cold-formed steel sections, since they could reach 50% of the yield stress of the material. As part of a comprehensive experimental program on the use of cold-formed steel sections in transmission towers, an investigation on the magnitude and distribution of residual stresses in cold-formed steel sections was undertaken. The study involved 83 tests using two nondestructive methods, and two destructive methods, to determine the magnitude and distribution of residual stresses. The paper summarizes the results from this investigation and outlines a number of …

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Multiple Stiffened Deck Profiles, M. Sommerstein, R. P. Papazian, R. M. Schuster Oct 1994

Multiple Stiffened Deck Profiles, M. Sommerstein, R. P. Papazian, R. M. Schuster

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

CAN/CSA-S136-M89 and the AISI Specification on Cold Formed Steel Design use different methods to determine the effective width of multiple stiffened compressive elements when no local buckling in the sub-elements occurs. Both methods replace the multiple stiffened element with a flat plate element centered at the neutral axis of the multiple stiffened element. The methods differ in assigning an equivalent thickness to the straight line element. The AISI method provides sufficient thickness to match the moment of inertia of the multiple stiffened element, while the S136 method makes use of orthotropic plate theory, however, dealing only with the elastic buckling …

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Ultimate Behaviour Of Trapezoidal Steel Sheets In Bending, Raffaele Landolfo, Fredrico M. Mazzolani Oct 1994

Ultimate Behaviour Of Trapezoidal Steel Sheets In Bending, Raffaele Landolfo, Fredrico M. Mazzolani

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

A systematic analysis of existing trapezoidal steel sheets commonly used in the market is performed in order to compare their carrying capacity at the light of their ultimate behaviour. The complete investigation has been developed both from theoretical and experimental points of view. In this paper, the description of the experimental techniques, the numerical simulation of the obtained results as well as the exploitation of these data in order to check the codified design rules are reported.

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Stub Column Study Using Welded, Cold-Reduced Steel, L. Randy Daudet, K. H. Klippstein Oct 1994

Stub Column Study Using Welded, Cold-Reduced Steel, L. Randy Daudet, K. H. Klippstein

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

The primary goal of the subject study was to investigate the behavior and load capacity of stub columns using cold-reduced, low-ductility steel versus un-reduced, normal-ductility steel. Specimens that were cold-reduced were also welded transversely across the entire stud cross section. Therefore, this study also yielded data with regard to the axial performance of welded studs. In addition, since stub columns were punched and un-punched, further conclusions can be drawn about the effect of a weld located at a web perforation. A total of 133 stub column tests were performed at the Dietrich Material Testing Laboratory in Hammond, Indiana, between December …

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Behavior And Failure Mechanism Of Composite Slabs, J. J. Roger Cheng, Michael C. H. Yam, E. B. Davison Oct 1994

Behavior And Failure Mechanism Of Composite Slabs, J. J. Roger Cheng, Michael C. H. Yam, E. B. Davison

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

The behavior of a composite slab using a 636 deck profIle was investigated experimentally. Twenty-three one-way slab tests and twenty-four pull-out tests were performed. It was found that the behavior and shear bond load of the composite slab were significantly affected by the depth of the embossment shear key. The average shear stress from the pull-out tests was generally lower than that of the one-way slab tests due to a lack of the transverse load effects which influenced the frictional resistance between the concrete slab and the steel deck.

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