Enhancing Effluent Water Quality of Sedimentation Basins Using Constructed Wetlands Technology
The Tennessee Valley Authority (TVA) has constructed twelve wetlands to treat acid drainage at reclaimed coal mines and fossil-fueled power plants. These wetlands are designed primarily...
Safety Analysis of Handset Wood Slab Formworks
A reliability index is calculated for flexural strength of a handset wood slab formwork system. Load and resistance models are based on a survey of construction loads and wood test data...
Limit States Design of Wooden Formwork for Concrete Walls
Load and resistance factors are developed for ultimate limit states design of wooden formwork components for concrete walls when the lateral concrete pressures are computed using the ACI...
Development of Standards for Slipform & Jumpform Works
Review of past work indicates substantial effort has been made to publish construction standards and guidelines for slipforms but published material pertaining to jumpforms is scarce....
Project Controls for Denver International Airport
Managing a $2 billion dollar construction program requires a unique application of tried and true control systems and provides an opportunity to innovate new methods. The Program utilizes...
Consultant Construction Engineering and Inspection Practices Within the Florida Department of Transportation
This paper presents an overview of the Florida Department of Transportation (FDOT) approach to a program utilizing Construction Consultant Construction Engineering and Inspection (C-CEI)....
Designing Plans for Constructability
The writer has obtained several years experience acting as construction engineer for roadway rehabilitation projects as a consulting engineer. In this capacity, it is necessary to provide...
The Changing Face of Construction Management?Staffing up for a Major Program
The East Bay Municipal Utility District's (District) Wastewater Department annual construction program grew from $2.4 million in 1986 to $60 million in 1991. The District...
Kinematics and Trajectory Planning for Robotic Excavation
One of the high volume and repetitive construction operations at the construction site is the excavation of soil. Automation of the excavation work requires a robotic system that is able...
Construction Documents Revised
The Engineers Joint Contract Document Committee has produced revised documents, which are available from ASCE. The committee includes ASCE, the National Society of Professional Engineers,...
Air-Water Transfer: The Role of Partitioning
A review is presented of the role of air-water equilibrium in determining the direction and rate of transfer of chemicals between water bodies and the atmosphere. Because this diffusive...
Oxygen Transfer in Full Lift Hypolimnetic Aeration Systems
A series of experiments were conducted to examine the effect of diffuser depth, diffuser orifice diameter and separator box surface area on oxygen transfer (mg/L), daily oxygen load (kg...
The Structural Curtain
Curtain walls are not standard off-the-shelf items. For major projects, they are almost always custom-designed. Typically, curtain walls are on the critical path of project and often account...
Ultimate Air Rights
The new 1 million sq ft office tower at 450 Lexington Ave. rises from available space between commuter railroad tracks, through the center of a renovated four-story post office and up...
Structural Aesthetics
When the design and construction of a building was the responsibility of a single individual, interaction between the aesthetics of architecture and the demands of structure did not exist...
GIS Plans Wastewater Future
When the Public Works Department began phase 3 construction on Albuquerque, N.M.'s current wastewater treatment plant in 1990, it was time to begin thinking about the next...
Seismic Surgery Rewarded
By installing isolators in the columns and strengthening the frame, engineers upgraded an eight-story concrete office building in Seal Beach, Calif. so that it should continue to function...
Plastic Highway Bridges
For highway bridges, composites are most effective in cables and decks. Researchers have developed and tested cables and deck sections for strength and fatigue resistance. Link-type cables...
Recent Advances in Seismic Design and Retrofit of California Bridges
This paper describes the damage and lessons learned from the most recent major earthquakes, the resulting bridge seismic design and detailing changes and the seismic retrofit program implemented...
Seismic Design and Performance of Railroad Bridges
Damage to railroad bridges during earthquakes in the United States and Japan is summarized. Research tasks are outlined to develop seismic design and retrofit criteria for railroad bridges....
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