Seminar Summary and Research Needs
All the papers presented in the technical sessions of the seminar are summarized and, in some cases, commented upon. The needed research in composite and mixed construction is described....

Scheduling in Manually Controlled Canal Irrigation Delivery Systems
The effects of canal transients on scheduling water delivery to an irrigated area are described using a linearized form of flow equation obtained from a zero-inertia momentum equation...

Design and Construction of Guideway: Vancouver Advanced Light Rapid Transit
The Vancouver Advanced Light Rapid Transit (ALRT), system consists of linear induction motor driven, light-weight cars automatically controlled operating over a 21. 4 km system from downtown...

Alignment Special Structures for Vancouver's ALRT
This paper describes the special long-span structures, offset columns, and bent structures used in situations where the standardized guideway components used in over 90 percent of the...

Production of Guideway Beams for the Vancouver ALRT
This paper describes the planning, layout and design of a large scale precast plant and innovations in production technology for the fabrication and delivery of 1040 tangent and curved,...

Guideway Beams?Formwork and Fabrication
A manufacturing concept was developed around an adjustable form capable of mass producing prestressed concrete beams to the unique geometric configuration of each section of track. The...

The Effect of Connection Flexibility on Steel Members and Frame Stability
With the advent of Load and Resistance Factor Design (LRFD) and the many existing moment-rotation curves for connections, the use of actual connection flexibility in the design process...

Utilization of Experimentally Obtained Connection Data in Assessing the Performance of Steel Frames
Data from over 70 separate experimental studies on steel beam to column connections are reviewed with particular reference to the joint's in-plane moment-rotation characteristic. More...

Flexibility of Steel Seismic Moment Connections
Relevant Berkeley experimental results are critically evaluated to determine the flexibility of W18 W24 beam joints with and without stiffeners and/or doubler plates. The paper discusses...

Research Needs for Extant Iron and Steel Buildings
A brief review of iron- and steel-making processes is background for the development of shapes and codes. Sources of information for the condition assessment of iron and steel buildings...

Continuum Modeling of Periodic Truss Structures
Procedures for deriving equivalent stiffnesses for an extended Timoshenko beam used to represent truss beams are presented. A typical substructure of a truss is used to calculate these...

General Continuum Models for Discrete Structures
New knowledge is presented about the structural behavior of a variety of large repetitive lattice configurations of the type appropriate for utilization in cosmic space. Focus is placed...

Damage Detection in Periodic Structures
Nondestructive damage detection in periodic structures using continuum analogues of the discrete structure is studied. Algebraic equations relating changes in eigenfrequencies to the fractional...

Effect of Steel Fibers on the Cracking Behavior of Reinforced Concrete Continuous Beams
A research program was conducted with the aim of studying the cracking behavior of reinforced concrete continuous beams, as it is affected by using different combinations of main steel...

Rational Design of Beam-Columns in Steel
The paper discusses the procedure as currently recommended in the AISC Manual for selection of beam-columns in steel and points to the inadequacy of this procedure for quick convergence...

Unsymmetrically Reinforced Concrete Columns
The development of column strength formulas for unsymmetrically reinforced sections has been developed in previous papers. However, aids such as interaction diagrams have not been available...

Probabilistic Basis for Design Criteria in Reinforced Concrete
This collection of papers presents the results of research on the variability of reinforced concrete members carried out at the University of Alberta, Edmonton, Canada, during the period...

Slurry Walls Protect Harvard Square
Harvard Square Station, Cambridge, Mass., had to be rebuilt when Boston's Red Line Subway was extended further out to the suburbs. For the first time, tied back slurry walls...

Beam Analogy for Vertical Curves
The vertical curve is analyzed as a moment diagram for a uniformly loaded single beam with a concentrated moment at one end. This contributes some flexibility in approach, and enhances...

Engineering for Steel Construction
Engineering for Steel Construction, just published by the American Institute of Steel Construction, limns the latest advances in detailing...

 

 

 

 

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