Big Steps for Mankind: Extraterrestrial Sampling and Exploration 50 Years after Apollo 11
Between June 1966 and January 1968, four Surveyor missions successfully landed on the Moon, collecting invaluable scientific data required to support the coming manned Apollo missions. Central to the goals...

Next-Generation Drones Bolster Bridge Inspections
A preflight, flight, and postflight drone system saves time and money in bridge inspections. It can also create a digital "twin" of bridges....

Next-Generation Sonar Improves on Best Existing Technology
A sonar system capable of visualizing underwater environments in real time can be used for underwater bridge inspections and other construction-related tasks....

Drones: An Engineering Reconnaissance Tool of Tomorrow, but Here Today!
About six years ago, I began researching geotechnical engineering applications of unmanned aerial vehicles (UAVs), or drones. My initial efforts were encouraged by most of my colleagues, but were criticized...

Photogrammetry for Rock Engineering: A Snapshot of State-of-the-Art Rock Mapping
Generally speaking, photogrammetry is the science of turning photographs into 3D models. While flashy advertisements may convey the idea that it's as simple as pushing a button (e.g., on a drone remote)...

The Rise of UAVs Signals a New Era in Geotechnics: Big Data in Geotechnics is Coming from Above
If you have been following the news, browsing the internet, or even gazing up in the sky, it is likely that you have seen an Unmanned Aerial Vehicle (UAV), also commonly known as Unmanned Aircraft System...

Post-Earthquake Reconnaissance Using Digital Imagery: A Bird's-Eye View
Over the last decade, remote sensing has played an increasing role in geotechnical earthquake reconnaissance through the use of satellite imagery, LIDAR, and unmanned aerial vehicles (UAVs). These techniques...

Remote Sensing: A New Revolution in Geotechnical Engineering
Remote sensing in the form of satellite imagery has become part of our everyday life—from displaying boring locations at a job site to the various mapping apps on our smart phones that help us get there....

Achieving Success and Avoiding Failures with Permeable Pavements
This chapter provides experienced-based recommendations on how to achieve success with permeable pavements. This information is based on an informational survey completed by designers,...

Site Conditions
The owner and the engineer should visit the proposed site during the initial planning phase and periodically throughout design to identify site conditions and constraints. A survey of...

Detailed Site Investigations
This section addresses site investigation issues that are important for detailed design and construction of microtunneling projects. These site investigations include the following: Geotechnical...

Construction Support Services
A preconstruction survey of existing structures within the anticipated construction zone of influence should be conducted before any construction begins. A plan for structures that need...

Instrumentation and Monitoring
A detailed plan for monitoring possible ground surface movements caused by the microtunneling operations should be prepared. The plan is typically prepared by the engineer in consultation...

Ground Feature Monitoring Using Satellite Imagery: How Interferometric Stacking of SAR Can Mitigate Geo-Disasters Along Transportation Corridors
Landslides, debris flows, and other types of ground movements are among the most common hazards to humans and infrastructure. According to the United States Geological Survey, annual domestic...

Accuracy Assessment of the National Geodetic Survey's OPUS-RS Utility

The Engineering Income and Salary Survey Standard Report
Trends Analysis, Policies, and Practice
The Salary Survey of 2010 is an engineering income and salary survey....

The Engineering Income and Salary Survey
Trends Analysis, Policies, and Practices
The Salary Survey of 2009 is an engineering income and salary survey....

Evaluation of Satellite-Based Impervious Surface Data for the Mid-Atlantic Region Using an Independently Collected, High-Resolution Validation Database
Satellite-based estimates of impervious surfaces are being produced for the entire United States as part of the U.S. Geological Survey's (USGS) Landsat-based National Land Cover Database...

Effects of Impervious Area Estimation Methods on Simulated Peak Discharges
The variability of simulated flood discharges is evaluated using two methods for estimating impervious surfaces and common design methods in the Mission Creek watershed (31 sq km) located...

Current Programs in American Post-Secondary Wood Design Education
Wood engineering has been a requirement in civil/structural engineering education curricula forcenturies. In 1990, a comprehensive survey was conducted of wood engineering educationprograms...

 

 

 

 

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