Banking on Bioengineering
Geoenvironmental engineers have traditionally used riprap to protect streambanks and river banks from erosion. In recent years, however, river regulators, permitting agencies, and county...
Scaling the Monument
One of the three phases in the restoration of the Washington Monument was the design and construction of an aluminum scaffolding system with both functional and aesthetic purposes. The...
Early Warning System
The Rock Hazard Rating System (RHRS) can help highway owners mitigate the risks of rock slope failure. This system helps owners determine which slopes are most hazardous and should be...
Construction Control for Earth and Rockfill Dams
Technical Engineering and Design Guides, as adapted from the U.S. Army Corps of Engineers, No. 27 This manual provides critical guidance for constructors...
Securing the Stone
To prevent spalling at edges on thin stone veneer, engineers who design stone cladding pay special attention to the connection details. Kerf clips, 100-150 mm long, that distribute load...
Rock Dam Revitalization
Sometimes restoring an area to a natural appearance requires a little artificial help. When the city of Longmont, Colo., began creating the St. Vrain Greenway, a park and recreation area...
Cliffside Correction
Construction of a 10 km sewer collector in Valpara�so, Chile, came to a halt due to construction difficulties experienced during pipe jacking operations. Analysis revealed not only construction...
Alaska's Last Link
Alaska's Seward Highway has been upgraded this past year. The last section of the highway dates back to the state's early mining days in the Kenai Peninsula,...
Ground Improvement, Ground Reinforcement and Ground Treatment
Developments 1987-1997
This proceedings,
Degradation of Natural Building Stone
This proceedings,
Historic Downtown Dilemma (Available only in Structural Engineering special issue)
Many older commercial masonry buildings built of locally quarried stone or fired brick in downtown areas suffer from roof leaks. Because a studwall cavity often is located between the...
Calendar: Bridges 1998 Calendar
Featured bridges are: C&O R.R./Lafayette Street Underpass Bridge (VA); Clear Creek Bridge (UT); Stoneman Bridge (CA); Marble Fort Bridge (CA); Rocky Mountain Viaduct (VA); Smokemont...
Rehab by Helicopter
The City of San Diego's 86-year old Dulzura Conduit has been in almost continuous operation since it first opened in 1909. But by 1984 flow had been reduced to less than 15...
Rock `N' Roll in Cleveland
A glass tent, a cylinder perched on a single column, a collection of squares, rectangles, triangles and circles were amassed in and around a 167 ft tall tower by architect I.M. Pei to...
Construction Through Crude Oil
When the Hilltop Interceptor project in Cleveland confronted oil-saturated sandstone, designers had to rethink their shaft construction and support procedures. Among the hazards were volatile...
Siting Low Profile Grade Control Structures for the Muddy Creek Demonstration Stream Restoration Research Project
In the Fall of 1993 Reclamation began a demonstration stream restoration research project on Muddy Creek, near Great Falls, Montana. Muddy Creek captures return irrigation flow from a...
Features of a Chevron Weir Rock Ramp
This paper presents the features of a new type of low profile grade control structure, the chevron weir rock ramp. As the name infers, the planform of the structure is in the shape of...
Rock Riprap for Grade Control
Rock chutes (riprap channels on steep slopes) are used as grade control structures to safely conduct a water flow to a lower elevation. Common procedures used for design of rock riprap...
Scour in Erodible Rock II: Erosive Power at Bridge Piers
Scour depths around bridge piers founded on erodible rock can be determined by making use of the Erodibility Index Method. This method defmes an erosion threshold by relating the erosive...
Problem and Technical Solutions: The Seven Oaks Dam, Physical Elements of the Seven Oaks Dam Feature
Seven Oaks Dam is located in the upper Santa Ana Canyon approximately 1 mile from the canyon mouth. The site is 8 miles northeast of the city of Redlands in San Bernardino County on the...
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