Most often recognized for its gigantic lakes, Michigan is noteworthy for more than just water. Some of these picturesque places follow the natural curve of the lakes. Sleeping Bear Dunes National Lakeshore offers a beautiful gradient of blues to greens. The Pictured Rocks National Lakeshore offers a gorgeous look at the striations and individual layers of rocks.

Foundation, Geotechnical

A Midwest leader in foundation, geotechnical, and bridge construction Specializes in a wide array of foundation piles, auger cast piles, micropiles, earth retention systems, geotechnical, and marine construction. Hardman line of services can be used in any situation there’s a need — from a one-day job to a multimillion-dollar project. Select a service to see the work they do. Deep Foundations Auger Cast Piles Displacement Piles Drilled Shafts Driven Pile Helical Piles Micropiles Push Piles Sheet Piling Earth Retention Earth Anchors Secant Walls Soil Nail Walls Soldier Piles Shotcrete Tangent Auger Cast Walls Ground Improvements Compaction Grouting Soil Grouting Geotechnical

Researcher Aids Arkansas Highway Projects Through Subsurface Analysis

Source: Researcher Aids Arkansas Highway Projects Through Subsurface Analysis | University of Arkansas FAYETTEVILLE, Ark. – A University of Arkansas geotechnical engineer is collaborating with the Arkansas Department of Transportation to map subsurface conditions before road construction begins to identify issues early and help keep highway construction projects on track and on budget. Clint Wood, a civil engineering associate professor and geotechnical engineer, creates profiles of subsurface conditions and soil composition by sending stress waves into the ground and measuring their response at the surface. The non-invasive technology is similar to how ultrasound imaging works on the human body. The technology provides important information for highway designers and construction contractors, who’ve had to rely on imperfect methods for determining subsurface conditions, such as exploratory drilling, a strategy that can miss changes between limited drilling locations. Wood compares designing based on limited exploratory drilling to navigating with an incomplete map. The research is conducted for and in conjunction with the Arkansas Department of Transportation. With an additional $115,318 grant, the transportation department has provided a total of $561,427 in funding. The work focuses on estimating the depth and stiffness of bedrock for new highway alignments and understanding subsurface conditions that cause slope instability. The latter is especially important for understanding how water moves through a slope. Unexpected changes in bedrock depth near slopes can also create pockets where water collects, which can cause the soil in the slope to become saturated, leading to instability. Projects that encounter these issues can face substantial extra costs and delays while designers and contractors adapt the original plan or have to attempt another repair. Those problems can be avoided, or at least minimized, by better understanding the subsurface conditions through non-invasive testing. LIDAR AND DRONE ACCURACY In a separate project, Wood and several other U of A [...]

Collaborative summer at ERIC for freshwater research

Source: Freshwater research: A collaborative summer at ERIC | All In Wisconsin When Amanda Stickney learned about chemistry in sixth grade, her love of math and science clicked.   Amanda Stickney analyzes samples at the ERIC lab. “In high school, I went to a semester boarding school that focused on environmental science and stewardship,” says the recent graduate of UW-Stevens Point’s chemistry program. “That’s when I knew I wanted to do something with environmental chemistry.” Last summer, Stickney had a unique opportunity to expand her laboratory skills at UW Oshkosh’s Environmental Research and Innovation Center (ERIC), the UW System’s most comprehensive research and testing center. Each year ERIC hires about 40 students for its various programs. Historically, most of them have been undergraduates from UW Oshkosh.   A grant from the Freshwater Collaborative of Wisconsin (FCW) helped give students from other UW campuses, including UW-Eau Claire, UW-Stevens Point, UW-Stout, UW-Superior, UW-Parkside and UW-Whitewater, the opportunity to train at one of ERIC’s three locations — Oshkosh, Manitowoc, or Door County. The FCW grant funded four positions, and an additional three-and-half positions were funded through matching grants.   “We provide opportunities for students to learn the techniques, the workflow and the environment of this type of laboratory,” says Greg Kleinheinz, Viessmann Chair of Sustainable Technology and professor of environmental engineering technology at UW Oshkosh. “One of the goals of our Freshwater Collaborative project was to make inroads with other campuses and bring students from the different campuses together.”   Students spent a week in the ERIC lab training and learning analytical techniques. Because of her major, Stickney worked in the lab all summer, learning how to run the equipment, analyze samples and follow standard operating procedures.   “If I want to work in a lab, I wanted to really learn chemical safety,” she says. “Not everyone can follow an SOP  [Standard Operating Procedure] for [...]

Microbial material modification helps to control frost heave and saline soil solidification

Source: Microbial material modification helps to control frost heave and saline soil solidification Chinese researchers recently conducted a study on process of biogas generation improving physical and mechanical properties of soil. A research team led by Sheng Yu from the Northwest Institute of Eco-Environmental Resources (NIEER) of the Chinese Academy of Sciences (CAS), together with their colleagues from Southeast University, has implanted Pseudomonas Stutzeri in the soil pores and induced it to produce nitrogen bubbles, and they also analyzed the influence mechanism of mitigation of sand liquefaction using biogas bubbles. In the natural environment, there are many microorganisms in rock and soil masses, and its metabolic activities will change physical and mechanical properties of rock and soil. These microbial activities can be controlled, enhanced and used to solve geotechnical problems, and such methods have been named as biogeotechnologies. As an emerging interdisciplinary field, it has developed rapidly in recent years due to its advantages of low carbon and friendly environment. From the perspective of practical application, biogeotechnologies can be used for rock and soil reinforcement, sealing of water leakage, prevention of sand liquefaction, soil erosion resistance control, and contaminated soil treatment and so on. Based on the above research results, the NIEER research group is exploring to apply biogeotechnologies to frost heave control and saline soil solidification, and has achieved some preliminary results. In this study, the researchers applied biogas generation process to soil frost heaving treatment, and studied improvement of biogas production performance under low temperature conditions. Results showed that sealing effect of bubbles and microorganisms on the water migration path can reduce soil permeability coefficient by one order of magnitude. Besides, they also introduced biomineralization to solve the prominent problem of saline soil with high chloride content in Northwestern China. Based on excellent curing effect, they analyzed the deterioration mechanism of [...]

Small earthquake near Battle Creek Tuesday stronger than originally reported

Source: Small earthquake near Battle Creek Tuesday stronger than originally reported | WTVB | 1590 AM · 95.5 FM | The Voice of Branch County   CALHOUN COUNTY, MI — A small earthquake that measured 3.8 on the Richter scale took place at 12:10 p.m. Tuesday about 9 miles southeast of Battle Creek, Michigan. Several residents said they heard and felt some rumbles. Originally, it was reported as a 3.6, but often data on the strength of earthquakes is adjusted as new information comes in. Residents around Calhoun County, and some in eastern Kalamazoo County, said they heard two loud booms with the second one louder and longer than the first. There were also reports of rattling windows. Others reported noises that sounded like a washing machine off balance or a loud truck passing by their homes. There were no reports of any damage or injuries. Tuesday’s quake was not as strong as the one in Kalamazoo County on May 2, 2015, which measured 4.2 on the Richter scale. It was centered nine miles south of Galesburg. According to University of Michigan researchers, that was the largest earthquake with a Michigan epicenter since a magnitude 4.6 earthquake struck near Coldwater on August 10, 1947. The 2015 quake confirmed suspicions for decades that a fault line was located in southeastern Kalamazoo County and experts believe it also was connected to the same fault responsible for the 1947 quake. Be sure to read up on the recent seismic activity in China and Haiti.

Soil Nail Walls Design and Construction

Source: Soil Nail Walls - Design and Construction -NEW (7003IW2022) INSTRUCTOR:  Naresh Samtani, Ph.D., P.E., D.GE, F.ASCE Participants will have access to the virtual workshop video archives and materials for 60 days from the start day of the workshop. Virtual Workshop Brief Using a collaborative and interactive learning approach, this virtual workshop will help you understand the design and construction aspects for soil nail walls. You will learn newer design approaches based on the LRFD platform that is the basis for guidelines for soil nail walls by the American Association of State Highway and Transportation Officials (AASHTO) and the Federal Highway Administration (FHWA). The workshop will help you assimilate the design and construction aspects through active participation by frequent interactions throughout the workshop and real-time expert feedback. The interactions will facilitate a better understanding of the nuances of the newer design principles which would help you avoid costly design errors in real-world projects. In between the two live sessions, attendees will independently work on an application (e.g., exercises) or a reflection (e.g., reading) assignment. Learning Outcomes Upon completion of this course, you will be able to: Explain the terminology for soil nail walls Explain design of soil nail walls using principles of limit state design Explain the essential elements of construction Recognize construction procedures and influence on wall design and performance Explain the importance and concepts of nail testing Identify necessary characteristics of software tools Explain corrosion considerations Discuss facing (shotcrete) analysis Identify the necessary information on plans and specifications Benefits for Participants Become familiar with the latest limit state design approaches and standards for soil nail walls Avoid common pitfalls and costly errors in analysis and design Be able to categorize and streamline limit state evaluation Recognize the importance of considering construction as part of overall design process Assessment of [...]

WIU Graduates First Civil Engineering and Electrical Engineering Students

Source: WIU Graduates First Civil Engineering and Electrical Engineering Students Associate Professor of Engineering Blair McDonald and Jeremy May, new alumnus of WIU Civil Engineering MACOMB, IL - - The Civil Engineering and Electrical Engineering programs on Western Illinois University's Quad Cities campus have marked their first graduates. Jeremy May, of Geneseo, IL, received his degree in Civil Engineering, and Dakota Wilson, of East Moline, IL; Jeffrey Latham, of Davenport IA; and Travis Ohlsen, of Moline IL received their degrees in Electrical Engineering in May. In Spring 2019, the Illinois Board of Higher Education (IBHE) approved new degrees in Electrical Engineering (EE) and Civil Engineering (CE) within the WIU School of Engineering, which began in Fall 2020. Western's Civil Engineering program prepares graduates to work in the structural, geotechnical, transportation and water resources areas of either government (local or federal) or private practice. While May is the first Civil Engineering graduate from this new program, several students have graduated in recent years with a civil engineering emphasis, and all are now working with companies such as Shive-Hattery, Inc., Bruner, Cooper & Zuck, Inc., the US Army Corps of Engineers and Illinois Department of Transportation. Many WIU Engineering graduates have gone on to obtain their professional licensures, which involves a four-year process following graduation. Electrical Engineering develops students' knowledge of rapidly expanding technologies in electricity, electronics and electromagnetism. One of the requirements of an EE degree is to take an additional math course, Linear Algebra, which allows all EE students to automatically obtain a minor in Mathematics. Latham, Ohlsen and Wilson all make up the EE Senior Design Team for an Autonomous Tracked Vehicle. Latham plans to continue his education with the University of Arizona's Engineering-Robotics and Automation graduate program. Ohlsen recently completed his internship with KONE Escalator Supply Unit and began working full [...]

Lake Michigan coastline erosion research brings in new data and diplomacy

Source: Lake Michigan coastline erosion research brings in new data and diplomacy | Illinois-Indiana Sea Grant The town of Beverly Shores includes part of the Indiana Dunes National Park. (Photo credit: David Mark, Pixabay) The record high Lake Michigan water levels in 2020 were even more dramatic if you consider that the lake had near record low levels as recent as 2013. “That’s a lot of pressure on the shoreline,” said Cary Troy, Purdue University civil engineer. “There’s really no precedent in terms of ocean coastlines for what the Great Lakes are going through related to water level fluctuations.” In addition to lake levels, beaches are impacted by large storms and barriers, piers, and other human interventions. Troy is part of a sweeping study funded through Illinois-Indiana, Michigan and Wisconsin Sea Grant programs to assess Lake Michigan coastal erosion levels, causes, and management options from physical, social and community perspectives. The two-year project that began in 2020 is led by Troy, Guy Meadows with Michigan Technological University and Chin Wu at the University of Wisconsin-Madison. Miles Tryon-Petith, Chin Wu’s civil and environmental engineering Ph.D. student from UW-Madison is working on mounting the real-time camera to record bluff movement in Mequon, Wisc. (Photo courtesy of Wisconsin Sea Grant.) The research will focus on three coastal communities that offer the opportunity for scientists to track and measure erosion on different beach features—the bluffs at Concordia University in Wisconsin, the shoreline of South Haven, Michigan, and the dunes at Beverly Shores in Indiana. Part of the beach in the small town of Beverly Shores is in the Indiana Dunes National Park—there, the research team can learn more about how nature responds to water level changes and storm events. Troy also wants to study coastal sites where people have added structures to the landscape. He’s [...]

By |September 22nd, 2021|Geotechnical Indiana, West Lafayette, Environmental Indiana, Geotechnical Illinois, Geotechnical Michigan, Geotechnical Wisconsin, Madison|Comments Off on Lake Michigan coastline erosion research brings in new data and diplomacy

UD researchers study climate change impacts on soils at military installations

Source: The Ground Underfoot - Civil and Environmental Engineering UD researchers study climate change impacts on soils at military installations We walk over it, drive over it and build on it. Yet, it is probably safe to say, most of us rarely think about the ground beneath our feet. Underneath the grass, concrete, asphalt and other materials in our built environment, however, soil provides structure and stability for what lies above. The United States military wants to understand the role that climate impacts, such as flooding, storm surge or sea level rise, will have on soils at its coastal military bases and facilities, which are critical to national security. Soil conditions can affect the integrity of the ground underpinning buildings, roads, bridges and more. For example, if a soil’s pH were to rise significantly, due to increased salt content-containing ions such as sodium from storm surge, it could create saline conditions that could hamper the ground’s ability to support this necessary infrastructure. Understanding these threats will enable faster and more accurate routing and maneuverability for U.S. forces. The Delaware Environmental Institute (DENIN) is collaborating with the Engineer Research and Development Center (ERDC) of the U.S. Army Corps of Engineers and Louisiana State University to understand how vulnerable military installations along coasts may be affected by soil changes due to sea level rise and coastal flooding. DENIN has received $3.79 million in first- and second-year funding from the U.S. Department of Defense to start this work, and is eligible for an additional $3.82 million in continued funding over the following two years. Led by DENIN Director Don Sparks, Unidel S. Hallock du Pont Chair of Soil and Environmental Chemistry in UD’s Department of Plant and Soil Sciences, the UD effort includes interdisciplinary collaboration with Yan Jin, Edward F. and Elizabeth Goodman Rosenberg Professor [...]

Parameters Variation Model Customization and Sensitivity Analyses

Source: Parameters Variation: Model Customization and Sensitivity Analyses Parameters Variation Model Customization and Sensitivity Analyses A well-known engineering challenge in the framework of finite element (FE) analysis-based design is the large number of input factors involved in geotechnical computational models. There is always a significant amount of uncertainties associated with the properties of geomaterials, being naturally highly heterogeneous materials. In the context of model calibration and validation, conducting a sensitivity analysis is very important. This can determine the key factors which govern the system and efficiently characterize the geotechnical variability for any considered design problem.   Powerful mechanisms for the consideration of parameter variation are also very interesting for speeding up FE model creation and automating results in post-processing. These are also quite useful in reducing model definition for specific types of engineering problems (excavation wall of a specific type under simple ground conditions, simple tunnel shape in uniform rock mass, etc.) to a limited number of parameters that can be inputted in a text file or Microsoft Excel spreadsheet without expert knowledge of the PLAXIS user interface and different modeling techniques and FE know-how. The sensitivity analysis and parameter variation tool in PLAXIS A sensitivity analysis determines how different values of an independent variable affect a particular dependent variable under a given set of assumptions. In other words, sensitivity analyses study how various sources of uncertainty in a mathematical model contribute to the model's overall uncertainty. The Sensitivity Analysis and Parameter Variation tool (see Figure 1) can be used to evaluate the influence of model parameters on calculation results for any particular PLAXIS FE model: The Select Parameters tab sheet will first provide information about all the parameters that can be changed to perform the sensitivity analysis. Available parameters include most model parameters of the data sets for soil and [...]

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