The birth and growth of history's most exciting building material
Not until the early decades of this century did this most revolutionary of all structural materials arrive-prestressed concrete. Developed in Europe, prestressed concrete began its rapid...
Steel Frame, Precast Floors Meet Impossible Time Constraints
Only 13 months were allotted for expansion of the Captain Cook Hotel in Anchorage, Alaska, which meant that construction would have to continue through the winter months with little down...
Automatic Surveying � Updating Canada's Control
With Litton's
Proven Organic Coatings for Long Term Protection�� Part II
Recent advances in coatings materials and their application make possible improved protection of structures in normal or aggressive environments. Shopcoating and field application are...
La Guardia Airport Parking and Terminal Frontage Structure
One of the world's largest parking structures, at New York City's La Guardia Airport, is of special interest because the structural steel has no fireproofing....
Plastic Filter Fabrics Have Bright Future
There are thousands of existing installations using filter fabrics in North America and additional thousands in Europe, most built in the past 10 years. The momentum is gathering. Filter...
Wastewater Ozonation: A Process Whose Time Has Come
For many years, ozonation has been a technically viable solution to difficult waste treatment problems. Not until recently, though, has ozonation found growing acceptance as a cost-effective...
New Orleans Grows on Deep Piles
In the New Orleans area, tall buildings must be supported by piles extending at least into the preconsolidated clays at -150-ft (-46-m) or so. Settlement is much too severe and uneven...
Inverted Filter Stabilizes Soil, Stops Erosion
The inverted filter concept was invented by Karl Terzaghi to prevent dams from failing by water piping through the foundation. Laboratory and field testing have refined the necessary specifications...
Gabions, Perforated Pipe and Gravel Serve as Fish Screens
A type of structure to prevent juvenile salmon from diverting to irrigation ditches has been developed on the Merced River in central California. It was built after cost considerations...
Innovative Design at Florida Bulkhead Reduces Material and Construction Costs
Remedial work to an existing bulkhead at a deep-water berth for Port Everglades, Florida, has been done with substantial savings through the application of innovative design concepts....
University of Idaho Barrel-Arch Roof Wins Outstanding Structural Engineering Award
The world's longest span wood structure now covers the football stadium at the Univ. of Idaho in Moscow, Idaho. The trussed arch consists of an upper and lower wood deck connected...
Polymer-Concrete Passes Toughest Test
Almost three years after a pour of polymer-concrete (PC), a full patch of a hole in New York City's Major Deegan Expressway shows no cracks and is adhering well to the original...
Impermeable Asphaltic Concrete Pond Liner
An impermeable dense hydraulic asphaltic concrete solar evaporation pond liner was developed by the Southern California Edison Co. for the Mohave Generating Station, Clark Co., Nevada....
City's Topographic Mapping System Saves Time, Money and is More Accurate
The city of Elgin, Ill. purchased its own topographic mapping system called Topo-Plan. The system consists of an aerial photo base map plus a transparent overlay showing 2-ft (0.60-m)...
Water Harvesting�� Modern Application of an Ancient Method
Water harvesting�The process of collecting natural precipitation from prepared watersheds for beneficial use was the topic of a 3-day symposium held in Phoenix, Arizona, in March 1974....
Plastic Tower Solves Radar Interference
A new nonmetallic tower section has been designed to eliminate major rador interference problems caused by a steel Radar Microwave Link tower. The replacement section is composed of a...
Dredging and Its Environmental Effects
Proceedings of the Specialty Conference on Dredging and its Environmental Effects, held in Mobile, Alabama, January 26-28, 1976. Sponsored by the Task Committee on Dredging and its Environmental...
Pipeline Bridge Uses Timber Arches
An arch bridge is utilized for the purpose of providing a river crossing for a water supply pipe. Tidal influence, an unfavorable riverbed situation complicated by estuarial and other...
How Concerned Should Civil Engineers be with Fire Protection�
During the last five years, there has been increasing concern and interest in fire safety in buildings, especially tall buildings. This has resulted in new federal legislation, a new General...
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