When AI Meets DIGGS � The Birth of a New Site Characterization Paradigm?
Drilling and sampling to obtain borehole logs, together with various in-situ testing, are usually performed to determine subsurface soil and rock profiles and their associated engineering properties. However,...
Building on Hudson Yards In Section: Megaproject Geotechnics: Can a Megaproject Be Big Enough to Change a Building Code?
As a young geotechnical consulting engineer working in New York City, I was always curious as to why the city?s building code prescribed a maximum allowable rock-socket skin-friction value of 200 psi for...
Geotechnical Risk Management: The Five Non-Technical Topics that are Crucial for the Successful Practice of Geotechnical Engineering
It is fair to state that the aspects of civil design and construction referred to as geotechnical engineering can be characterized as inherently risky. Geologic processes are complex,...
Making Big Data Work for You and Your Project: A 3-D Geotechnical Model is a Smart Way to Work
Modeling the stratigraphy beneath a site and assigning soil and rock properties are important steps in geotechnical engineering. Geotechnical engineers often need to model ground conditions...
So, Why Do You Want to Write a GBR?
Since 1974, scores of papers, articles, conferences, and legal documents have been dedicated to explaining how to write and/or how to use a Geotechnical Baseline Report (GBR). But the...
Improving Construction Quality by Seeing What's Hidden Underground
One of the challenges of deep foundation projects is the inability to see what's being built at depth. Construction is hidden below ground, in soil or rock conditions that...
Geotechnical Design Over Karst. It's All About the Water
Karst is a type of topography which is formed over soluble rocks, such as limestone, dolomite, or gypsum. An irregular bedrock surface is typical of most karst areas, along with sinkholes,...
Evaluation of the Stone Strong Gravity Wall System by Stone Strong Systems: Final Report
This report was prepared as part of the HITEC evaluation for earth retaining systems. This evaluation was performed on STONE STRONG gravity walls, a precast modular wall developed, designed,...
Grouting Methods
This chapter discusses common grouting methods used in underground applications in both soil and rock. Jet, compaction, permeation, and hydrofracture grouting methods are frequently used...
Grout Hole Layout
The drilling method, either rotary or percussion, and the type and size of the drills to be used are selected based on such factors as rock type, depth of holes required, working space...
Transport Model Uncertainty and Sensitivity Analysis for Groundwater Releases of Radionuclides from Subsurface Nuclear Tests
Uncertainty analysis of groundwater flow and transport models is a topic of considerable interest in the groundwater modeling communities. The Underground Test Area (UGTA) Project of the...
Rock on Down the Road
The reconstruction of 11 miles of U.S. Highway 52 through the heart of Rochester, Minnesota-known as the Roc 52 project-appears poised to become the standard by which all design/build...
Construction Factors and Monitoring Methods Relating to the Performance of Ventura Breakwater Core Loc Repair
In 1999 the Los Angeles District of the U.S. Army Corps of Engineers (USACE) repaired the north Ventura breakwater head. The head was rebuilt using 2-ton underlayer stone armored with...
Predicted Service Life of Armor Stone: A Case History
Laboratory testing for determination of true rock quality in terms of expected performance is not clear-cut, may be misleading, and requires extensive interpretation by an expert. This...
Rhythm of Beachrock Levels in Contrasting Plate Settings: Rifting Red Sea and North American-Caribbean Plates
Sequences of beachrocks have been compared from the northern Red Sea, the North American plate (north shore of Puerto Rico), and an island of the Caribbean plate. In all these areas the...
Under the Microscope
Forensic engineering is typically more complex than engineering design because it requires the integration of specialized knowledge of materials science, structural analysis and design,...
Speeding Across Spain
Spain is extending its high-speed rail system�the Alta Velocidad Espa�ola (AVE)�to include a line running from Madrid to Lleida, with stops in Guadalajara and Zaragoza. The line will extend...
Moving Mountains
The earthmoving and rock-crushing operations at the Eastside Reservoir represented one of the largest such projects in the history of the United States. The earth and rock-fill dams required...
Scenic-Bridge Strengthening (Available in Structural Engineering Special Issue only)
Built in 1937, California's Big Creek Bridge�a double-arch crossing with half-arch side spans�was due for a seismic retrofit. Challenged by the structure's unique...
Calendar: Bridges 2001 Calendar
Featured bridges are: Whipple Bowstring Bridge (OH); Alsea Bay (Waldport) Bridge (OR); Brush Creek Bridge (KS); Whipple Through Truss (OH); Simon Kenton Bridge (OH); Rogue River (Rock...
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