Thresholds in Appropriate Technologies for Water Supply and Waste Disposal
Appropriate technologies come from a variety of sources. Most, though not all, technologies are appropriate to the specific time and place in which they are developed. Some can be transferred...
Economic Incentives and Appropriate Technology in Village Water Supply
This paper discusses the use of appropriate technology in the village water supply sector in developing countries. Appropriate technology may be defined to cover both the technical alternatives...
Simplified Water Treatment Plant Design
The building of succeeding generations of sophisticated water and waste water plants, usually containing complex and energy intensive equipment, has been one of the marks of technically...
Intermediate Service Levels in Water Distribution
This paper is concerned with design standards for secondary water distribution networks. Based on field studies in the Middle East and Africa, mathematical equations were developed for...
Environmental Epidemiology and Sanitation
This paper reviews the key variables determining the transmission of excreta-related diseases, sets out an environmental rather than biological classification of these infections, and...
Field Control Replaces Design Conservation At World's Largest Underground Powerhouse
The excavation of 16,000,000 yd� of rock at LG-2, part of the La Grande hydropower project in Canada, has been completed. The world's largest underground powerhouse, with...
Foundation Soil Preload Saves $164,000
Soils in the lower Mississippi valley are highly compressible and present a challenge to structural foundation designers. Rather than support power plant structures on piles, one design...
Mammoth Construction Jobs: How to Speed Them, Cut Costs�
Not a few massive construction projects in such fields as mass transit, water resources, and power plants are suffering greatly from inflated costs and long delays. Among reasons are the...
Underground Hot Water Storage Could Cut National Fuel Needs 10%
The possible conservation of waste heat by using it to heat water and then, subsequently, injecting the heated water into wells screened in aquifers containing saline water is described....
What's New in Roofing�
For 75 years the waterproof membranes in roofs were made the same way�layers of bitumen alternating with layers of felt. Now for the first time prefabricated membranes of synthetics are...
Coastal Controversies Abound at Record-Breaking Conclave
Coastal Zone '78 was the largest specialty conference ever held by the ASCE, drawing over 1,000 participants from a wide spectrum of professions that are involved in coastal...
Citizen Participation for Successful Village Water Supply
In developing nations, two keys to the success of village water supply projects are citizen planning and the use of the appropriate technology. The two are related. Involvement of citizens...
Sanitary Sewers for Developing Countries
To combat disease, we try to ensure water supply purity. Water is only one of many methods of disease transmission, however, and its purity does not alone eliminate the spread of disease....
Cofferdams�Economical Flood Protection
Houston Lighting and Power Co. Sam Bertron Generating Station, located on the Houston Ship Channel, had suffered a drop in elevation of 7.5 ft since its construction in 1954. At such a...
High Voltage Transmission Lines: Pros and Cons
This article, written in response to a CE Engineering News item, puts into perspective some of the pros and cons of high voltage transmission lines (500 and 765-kV lines). Specific problems...
Weather Modification Could Solve Some Water Resource Problems
On July 12, 1978 the Weather Modification Advisory Board submitted its final report to the Secretary of Commerce. The report proposes a national program for weather resources management,...
Gophers Go Underground
A major facility, Williamson Hall, was constructed to be almost entirely below grade on the East Bank Campus of the University of Minnesota. Heating and cooling energy requirements will...
Energy Facilities Going Underground
Environmental pressures, combined with continuing development of hard-rock excavation techniques, have turned attention to the placement of major engineering facilities underground. Primary...
National Conference on Environmental Engineering
Research Development and Design
Proceedings of the Environmental Engineering Division Specialty Conference held in Radisson Muehlebach Hotel, Kansas City, Missouri, July 10-12, 1978. Sponsored by the Environmental Engineering...
Peaking Power from Stored Air
Pumped storage has been recognized as a means of supplying additional electric power generation capacity during peak load periods for quite a while. However, such facilities are traditionally...
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