Analysis of Glulam Lattice Dome
Glued-laminated timber (glulam) domes have become competitive in the engineering of large-span roof structures. Three-way glulam grid domes, such as the Triax and Varax domes, are particularly...
On the Analysis of Viscoelastic Plane Frames
Since its foundation on 1986 the Computational Mechanics Laboratory at the Polytechnic School of Sao Paulo has often been asked for non-linear stability analysis of wood and concrete structures....
Why Bifurcation: A Study of a Reticulated Dome
Numerical results for a hexagonal lattice dome subjected to uniform gravity loading are presented. We demonstrate that a perfect nonlinear bifurcation analysis plays a crucial role in...
An Overview of the U.S. Coordinated Program for Masonry Building Research
The U.S. Coordinated Program for Masonry Building Research is a time-phased set of specific research tasks addressing materials, component and system behavior. The objective of the program...
Nonlinear Finite Element Analysis of Experiments on Two-Story Reinforced Masonry Shear Walls
Nonlinear, static finite element analyses are being used for correlation with experiments conducted on one-story reinforced masonry shear walls, and for the prediction of and correlation...
Dynamic Characterization of Posttensioned Rods in Stressed Timber Systems
A new approach is presented to monitor the levels of force in posttensioning rods in stressed timber systems. The dynamic response of the rod under an impact load is characterized and...
Suburban Superfund
Discovery of methane seeping into houses at a new development near Newark, Del. set off investigations that eventually led to the U.S. EPA declaring the site eligible for Superund cleanup...
Building a Better Landfill Liner
A soil liner project was sponsored by the EPA to provide information on the construction factors that affect the permeability of compacted soil liners. After construction of a field liner,...
System Identification of Earth Dams Using Seismic Records
A technique to identify the elasto-plastic dynamic properties of earth dams and, therefore to asses the capabilities and limitation of their models, is developed. The technique is based...
System Identification of Meloland Road Overcrossing
The Meloland Road Overcrossing (MRO) is a two-span reinforced concrete bridge structure located east of El Centro, California, 0.3 mi from the Imperial Fault. The Imperial Valley Earthquake...
Structural Considerations in Design and Construction Process of a 25 Story Office Building
This paper introduces an example in which a steel office building of 25 stories above the ground was constructed employing innovative techniques. One of them was the use of precast concrete...
Historic Background of Seismic Construction in San Francisco
A seismic design and construction tradition has developed in California because of the unique experience with local earthquakes. After the 1906 earthquake and fire, building performance...
Bermed Shelters Subjected to Accidental Explosions
An investigation of the adequacy of two competing shelter designs to protect the occupants from an accidental explosion in a nearby shelter is described. Two bermed shelters, one of rectangular...
Robotic Roundup
Robots are finding their way on to the construction site. Years of research and development have yielded unmanned machines that complete tasks as mundane as spotwelding and as dangerous...
Risk Analysis and Management of Natural and Man-Made Hazards
The third Engineering Foundation Conference on Risk-Based Decisionmaking titled Risk Analysis and Management of Natural and Man-Made Hazards was held in Santa Barbara, California on November...
State-of-the-Practice Mitigation Measures for Collapsible Soil Sites
Mitigative alternatives for collapsible soil sites are reviewed considering shallow, as well as deep, collapsible soil deposits. In the case of deep soil deposits the overburden pressures...
Characterization of a Site Underlain by Deep Collapsing Soils
The geomorphic setting of a site underlain by an 80 ft (24 m) deep deposit of collapsing silty sand is described. The field and laboratory investigation completed to characterize the geotechnical...
Jet Grouting for Underpinning and Excavation Support
Jet Grouting as a new tool for underpinning and excavation support is presented, describing the systems of Jet Grouting and its advantages over conventional underpinning techniques. A...
Compaction Grouting as an Aid to Construction
The traditional use of compaction grouting has been to arrest settlement of existing structures, and occasionally to raise them back to their original grades. Recently, the process has...
Fracturing of Rock Using Expansive Soundless Chemical Demolition Agents
The theoretical principles of the action of expansive soundless chemical demolition agents are presented. The procedure for using these demolition agents are briefly outlined. Differences...
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