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Articles 6631 - 6660 of 7869

Full-Text Articles in Civil and Environmental Engineering

A Study Of The Permeability Of Clays Subjected To Organic And Inorganic Permeants, Janardanan O. Uppot Jan 1984

A Study Of The Permeability Of Clays Subjected To Organic And Inorganic Permeants, Janardanan O. Uppot

Doctoral Dissertations

"Two types of clays, a magnesium montrnorillonite and a kaolinite, were subjected to precise permeability tests in specially designed triaxial permeameters, using organic and inorgani c permeants, to study the changes in permeability due to the reaction between clays and permeants. The organic permeants were an acid (acetic acid), a base (aniline), a neutral polar fluid (methanol), a neutral nonpolar fluid (xylene), as well as EDTA and its sodium salt. The inorganic permeants were aqueous solutions of aluminum, magnesium, sodium, calcium, barium and strontium.

The clay samples were prepared by consolidating from slurry; they were subjected to back-pressure saturation and …


Testing Of Steel Roof Deck Construction, Wei-Wen Yu, Lan-Cheng Pan, S. H. Lin Dec 1983

Testing Of Steel Roof Deck Construction, Wei-Wen Yu, Lan-Cheng Pan, S. H. Lin

CCFSS Library (1939 - present)

INTRODUCTION In recent years, insulated steel roof deck construction has been widely used in industrial and commercial buildings. The use of roof assembly consisting of 3-in. deep, 22-gage, steel deck is being considered by Rooftex, Inc. of Houston, Texas, for Class 1-60 and Class 1-90 assemblies. At the request of Rooftex, two types of tests were conducted at the University of Missouri-Rolla in July 1983. These tests, which consisted of physical tests of steel roof decks and uplift pressure tests of insulated steel roof deck construction, were conducted to obtain the"necessary data for the approval of the Factory Mutual Research …


Laterally Unsupported Purlins Subjected To Uplift, Roger A. Laboube Dec 1983

Laterally Unsupported Purlins Subjected To Uplift, Roger A. Laboube

CCFSS Library (1939 - present)

INTRODUCTION A research study, conducted at Cornell University, provided a theoretical method for evaluating the state of stress for both C- and Z- purlins subjected to wind uplift loading. According to the Cornell analytical method, a Z-purlin has more load carrying capability than a similar C-purlin. Although experimental verification was provided, questions were raised, within the Metal Building Industry, regarding the strength of the C-versus the Z-section. The purpose of the work discussed herein was to develop information regarding the behavior of C- and Z-sections having identical cross-section dimensions. A brief description of the test program, along with a comparison …


Testing Of Steel Roof Deck Construction, S. Sucharit, Lan-Cheng Pan Aug 1983

Testing Of Steel Roof Deck Construction, S. Sucharit, Lan-Cheng Pan

CCFSS Library (1939 - present)

No abstract provided.


Design Of Automotive Structural Components Using High Strength Sheet Steels Preliminary Study Of Members Consisting Of Flat And Curved Elements, Wei-Wen Yu, M. Brad Parks Aug 1983

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

CCFSS Library (1939 - present)

No abstract provided.


Design Of Automotive Structural Components Using High Strength Sheet Steels-Strength Of Beam Webs, Chiravut Santaputra, Wei-Wen Yu Aug 1983

Design Of Automotive Structural Components Using High Strength Sheet Steels-Strength Of Beam Webs, Chiravut Santaputra, Wei-Wen Yu

CCFSS Library (1939 - present)

I. INTRODUCTION In February 1981, the "Guide for Preliminary Design of Sheet Steel Automotive Structural Components" was issued by American Iron and Steel Institute (AISI) for assisting automotive structural designers to achieve weight reduction through the efficient utilization of carbon and high strength steels. 1 These design recommendations were based primarily on the 1968 Edition of the AISI "Specification for the Design of Cold-Formed Steel Structural Hembers,,2 but contained the following major differences with regard to the AISI Specification, which was written 'for the design of buildings: 1,4 a. The design expressions presented in the Guide are based on an …


The Influence Of Local Buckling On The Structural Behavior Of Singly-Symmetric Cold-Formed Steel Columns, Gale P. Mulligan, Teoman Peköz Mar 1983

The Influence Of Local Buckling On The Structural Behavior Of Singly-Symmetric Cold-Formed Steel Columns, Gale P. Mulligan, Teoman Peköz

CCFSS Library (1939 - present)

INTRODUCTION Cold-formed steel sections are formed from thin steel sheets, of typical thickness 0.015-0.25 inches, by either production cold roll forming or by specialized press braking. As a result, it is possible to produce economically a variety of cross-sectional shapes, which have high strength-to-weight ratios. Some structural applications include primary and secondary load-carrying framing members, such as columns, purlins and wall studs; and shear diaphragms, such as floor and roof decks and wall panels (Yu [1973]). Their design is governed by the American Iron and Steel Institute (AISI) Specification [1980], which is unique because of its generality, e.g., no specific …


Cold-Formed Steel Design Manual, American Iron And Steel Institute Jan 1983

Cold-Formed Steel Design Manual, American Iron And Steel Institute

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

No abstract provided.


Design Of Automotive Structural Components Using High Strength Sheet Steels, Wei-Wen Yu, Chiravut Santaputra, M. Brad Parks Jan 1983

Design Of Automotive Structural Components Using High Strength Sheet Steels, Wei-Wen Yu, Chiravut Santaputra, M. Brad Parks

CCFSS Library (1939 - present)

INTRODUCTION In recent years, automobile manufacturers have introduced new lines of lighter vehicles for the purpose of achieving fuel economy. To construct such vehicles, formable and weldable, high strength, sheet steels with yield points ranging up to 140 ksi have been used for parts and structural components. 1.1-1.7 Because various types of newer high strength sheet steels are now available for engineers to reduce car weight and because these steels permit the use of existing production equipment with virtually no change in techniques or production rates, the design criteria for efficient and economical use of these high strength steels in …


Repetitive Load Deformation Of Cohesionless Soil, Rodney Lentz Jan 1983

Repetitive Load Deformation Of Cohesionless Soil, Rodney Lentz

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

No abstract provided.


Mechanical Properties Of High Strength Sheet Steels, M. Brad Parks Jan 1983

Mechanical Properties Of High Strength Sheet Steels, M. Brad Parks

Masters Theses

"In recent years fuel economy has become one of the major criteria for the design of automobiles. In order to improve the efficiency of their vehicles many automotive designers are substituting high strength sheet steels for traditional materials of lower strength. This thesis discusses experimental work which was done to determine the representative mechanical properties and stress-strain relationships of a select group of high strength sheet steels with nominal yield strengths ranging from 80 to 140 ksi. The results show that high strength sheet steels are quite anisotropic with the variation in measured properties depending on the type of sheet …


Diaphragm Strength Of Composite Roof System, Roger A. Laboube, James M. Fisher Nov 1982

Diaphragm Strength Of Composite Roof System, Roger A. Laboube, James M. Fisher

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

No abstract provided.


Shear-Bond Capacity Of Composite Slabs, S. S. Seleim, R. M. Schuster Nov 1982

Shear-Bond Capacity Of Composite Slabs, S. S. Seleim, R. M. Schuster

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

No abstract provided.


Probability Analysis Of Cold-Formed Steel Structures, Mircea Grigoriu, Teoman Peköz Nov 1982

Probability Analysis Of Cold-Formed Steel Structures, Mircea Grigoriu, Teoman Peköz

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

No abstract provided.


Periods For Seismic Design Of Industrial Storage Racks, C. K. Chen, R. E. Scholl Nov 1982

Periods For Seismic Design Of Industrial Storage Racks, C. K. Chen, R. E. Scholl

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

No abstract provided.


Eccentric Connection Of Cold-Formed Steel Rack Structure, Rokuya Yamasaki, Noboru Yamamoto, Tsunemi Mochinaga Nov 1982

Eccentric Connection Of Cold-Formed Steel Rack Structure, Rokuya Yamasaki, Noboru Yamamoto, Tsunemi Mochinaga

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

No abstract provided.


Practical Grain Bin Design Manufacturing And Erection Considerations, George T. Halmos, G. Peter Koens Nov 1982

Practical Grain Bin Design Manufacturing And Erection Considerations, George T. Halmos, G. Peter Koens

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

No abstract provided.


Reliability Of Electric Cables And Conduit Supports, Andrzej S. Nowak, Peria V. Regupathy Nov 1982

Reliability Of Electric Cables And Conduit Supports, Andrzej S. Nowak, Peria V. Regupathy

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

No abstract provided.


Cold Formed Standard Steel Products In A Low Cost House Construction Method, Robert W. Dannemann Nov 1982

Cold Formed Standard Steel Products In A Low Cost House Construction Method, Robert W. Dannemann

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

No abstract provided.


Aisi Design Criteria For Bolted Connections, Wei-Wen Yu Nov 1982

Aisi Design Criteria For Bolted Connections, Wei-Wen Yu

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

No abstract provided.


Web Crippling Of Decks Subjected To Two Flange Loading, B. A. Wing, R. M. Schuster Nov 1982

Web Crippling Of Decks Subjected To Two Flange Loading, B. A. Wing, R. M. Schuster

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

No abstract provided.


Effective Lengths For Laterally Unbraced Compression Flanges Of Continuous Beams Near Intermediate Supports, G. Haaijer, J. H. Garrett Jr., K. H. Klippstein Nov 1982

Effective Lengths For Laterally Unbraced Compression Flanges Of Continuous Beams Near Intermediate Supports, G. Haaijer, J. H. Garrett Jr., K. H. Klippstein

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

No abstract provided.


Purlin Failures In The Vicinity Of Lap Joints And Internal Supports, K. T. Kavanagh Nov 1982

Purlin Failures In The Vicinity Of Lap Joints And Internal Supports, K. T. Kavanagh

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

No abstract provided.


Flexural Buckling In Cold-Formed Steel Structural Members, Peter Lorincz Nov 1982

Flexural Buckling In Cold-Formed Steel Structural Members, Peter Lorincz

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

No abstract provided.


Interactive Buckling In Thinwalled Columns, Srinivasan Sridharan, Rafael Benito Nov 1982

Interactive Buckling In Thinwalled Columns, Srinivasan Sridharan, Rafael Benito

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

No abstract provided.


The Strength Of Cold-Formed Portal Frames, A. H. Baigent, Gregory J. Hancock Nov 1982

The Strength Of Cold-Formed Portal Frames, A. H. Baigent, Gregory J. Hancock

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

No abstract provided.


Behavior Of C- And Z-Purlins Under Wind Uplift, Parviz Soroushian, Teoman Peköz Nov 1982

Behavior Of C- And Z-Purlins Under Wind Uplift, Parviz Soroushian, Teoman Peköz

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

No abstract provided.


Combined Compression And Lateral Loads On Load Bearing Steel Stud Walls, Paul G. Schurter, R. M. Schuster, Andrew S. Zakrzewski Nov 1982

Combined Compression And Lateral Loads On Load Bearing Steel Stud Walls, Paul G. Schurter, R. M. Schuster, Andrew S. Zakrzewski

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

No abstract provided.


Composite Steel Deck Diaphragm Slabs -- Design Modes, Max L. Porter, Lowell F. Greimann Nov 1982

Composite Steel Deck Diaphragm Slabs -- Design Modes, Max L. Porter, Lowell F. Greimann

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

No abstract provided.


Composite Cold-Formed Steel-Concrete Structural System, George Abdel-Sayed Nov 1982

Composite Cold-Formed Steel-Concrete Structural System, George Abdel-Sayed

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

No abstract provided.