The Heavy Duty Geogrid Wall
The geogrid reinforced soil retaining wall was a key component in reconstructing a small hydroelectric plant situated at the center of Cascade Dam in Michigan. It was necessary that the...
Inflatable Form Construction in Space
In 1973, NASA launched Skylab 1 using a modified third stage of a Saturn V Rocket. This orbital workshop proved to be a success even though problems occurred. This article discusses the...
Geosynthetics: Cleanup Tools
In addition to their use in liners and drainage systems for new landfills, geosynthetics can be used in environmental remediation projects. In an early example, contaminated muck was removed...
Massive Resistance
The recently completed structural reinforcement of the 95 year old landmark Salt Lake City & County building, and its 250 ft high central clocktower, is believed to be the first...
Seismic Cutoff
The John Hart Dam, which is a 40-year old dam in British Vancouver, Canada, has been rehabilitated to meet current seismic codes. BC Hydro, the utility that owns the dam, conducted a study...
Subsiding Problems with Slurry Walls
Slurry walls for excavation support cost far more time and money than the sheeting wall or the tieback and lagging wall. Criteria to decide where to consider using slurry walls and where...
Preliminary Dynamic Analyses of the Ministry of Agriculture Building
The Ministry of Agriculture building on Avenida San Antonio Abad was originally constructed as a 17 story reinforced concrete structure using a waffle slab system with interior reinforced...
Implications of Structural Characteristics on Failure
Performance of buildings with two common structural types, many of which suffered heavy structural damage or collapse, are analyzed. Conclusions are drawn that no structural type is inadequate,...
Seismic Rehabilitation: Why, When and How
Common methods of seismic rehabilitation are: repair of cracks, reconstruction of structural elements, addition of stiffening elements, and addition of dampers. A major consideration is...
Stopping Seepage
The Navajo Dam in New Mexico has major seepage problems. The Bureau of Reclamation, which owns the Dam, conducted studies, verified by outside consultants, concluding that the combination...
Coastal Structures and Long Term Shore Migration
Marco Island is a barrier island located on Florida's Gulf coast. Using an aerial photo time series from 1926 to 1981, shoreline migration is examined. Since shore development...
Design Features of the Elliott Bay Marina
The paper presents a summary of the major coastal engineering design features of a new Puget Sound small craft harbor proposed for construction within the City of Seattle. The 1,200 berth...
Nourishment of San Luis Beach, Galveston Island, TX
It has been proposed that one way of stopping shoreline retreat and protecting the foot of the Galveston Seawall is to nourish the complete length of the beach in front of the Seawall....
Shoreline Protection of the East Frisian Islands of Norderney and Langeoog
The seven East Frisian Islands protect as a natural barrier chain a part of the German coastline. In order to protect the health and bathing resorts against erosion, people constructed...
Shoreline Erosion Protection and Beach Nourishment
More than 40 percent of our national shoreline, excluding Alaska, is undergoing severe erosion. Structural measures including bulkheads, seawalls, revetments, groins, offshore breakwaters,...
Analytical Method of Ship Motions Moored to Quay Walls and Application to Port Planning
This paper describes an analytical method to calculate ship motions moored to quay walls and application of the method in order to establish the port planning method in taking account...
A Small Community's Response to Catastrophic Coastal Bluff Erosion
This paper describes the actions taken by a small unincorporated coastal community in Northern California during a series of catastrophic bluff erosional events, which occurred between...
The Great Highway Coverup
Public opinion has forced changes in highway design since the first ones were built 30 years ago. In the Seattle area, this environmental sensitivity led to federal court action and to...
Case Study on Fifty Years of Seawall and Groin Construction, Tybee Island, Georgia
The purpose of this paper is to document and analyze the problems, proposed solutions, and results of local, state, and federal attempts to control erosion and storm damage at Tybee Island,...
Protection of Cape Hatteras Lighthouse
Historic Cape Hatteras Lighthouse has recently become threatened by shoreline erosion. Shore protection measures for the lighthouse are summarized and shoreline changes and erosion rates...
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