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GeoPrac.net is a community of practitioners of geotechnical engineering, geological engineering, engineering geology, geophysics, hydrogeology and related disciplines. We offer members and visitors the foremost collection of geo-related articles, news, and online resources to keep those geo-professionals in practice at the forefront of their respective fields.

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Terracon acquires Mayes Testing Engineers
GeoNews - Comings and Goings
Written by Randy Post   
Wednesday, 17 August 2016 21:23
Terracon acquires Mayes Testing Engineers

Terracon has acquired Mayes Testing Engineers based in Lynnwood (Seattle) Washington. Mayes is a 115 person firm specializing in welding, concrete, soils, masonry, asphalt, and non-destructive testing in the Pacific Northwest. From the Terracon Press Release:

Terracon's expansion brings together the acquired resources of Mayes, RGA Environmental, and Argus Pacific all in the Pacific Northwest. Terracon companies now combine to include six Seattle/Tacoma and two Portland, Ore., locations. The move also becomes Terracon's fifth acquisition in the West in the past two years, having also acquired NORCAL Geophysical Consultants and Neil O. Anderson and Associates.
[Source: Read more information in the press release at Terracon.com. Image: Mayes Testing Engineers]

 
Video: Changing cutting tools on Bertha TBM
GeoNews - Available Resources
Written by Randy Post   
Wednesday, 17 August 2016 21:19

This is an interesting video of crews changing cutterhead teeth on the Bertha TBM beneath downtown Seattle. [Source: WSDOT YouTube Channel. Image: YouTube]

 
Hayward Baker Expands its Regional Presence with New Office in New Orleans
GeoNews - Press Releases
Written by Randy Post   
Tuesday, 16 August 2016 12:46

Christopher Rogers will spearhead Hayward Baker's New Orleans OfficeNew Orleans, LA – Hayward Baker Inc., North America’s leader in geotechnical construction, announces the opening of a new office location in New Orleans, Louisiana. The new office will support customers and projects along the Gulf Coast. As an extension of the Houston office, the New Orleans office is spearheaded by recent hire Christopher Rogers, P.E., Project Manager with oversight from Tyson Deklavs, Area Manager.

Christopher Rogers, P.E. is a graduate of Mississippi State University with a B.S. degree in Civil and Environmental Engineering. He is a registered engineer in Mississippi and Louisiana. Rogers has over ten years of diverse experience in quality control, design-build, and project management. Prior to joining Hayward Baker, Rogers worked for a general contractor in Louisiana as the Senior Quality Control Manager as well as a Field Project Manager. He also has spent part of his career as a Geotechnical Consultant.

[Editor] Click through for the rest of this press release from GeoPrac.net sponsor, Hayward Baker [/Editor]

 
Kleinfelder Names George J. Pierson CEO
GeoNews - Press Releases
Written by Randy Post   
Tuesday, 16 August 2016 12:24

Kleinfelder names George Pierson as new CEOSAN DIEGO, California – The Kleinfelder Group announced today that George J. Pierson has been named President and Chief Executive Officer of the firm, effective September 6, 2016.

"We are excited to have George join the Kleinfelder team," said Rodger Johnson, Chair of Kleinfelder’s Board of Directors. "George brings experience gained from years of leading a multi-billion-dollar, global infrastructure firm and we will benefit immensely from his leadership as we begin the next stage in our company’s development."

[Editor] Which multi- billion- dollar, global infrastructure firm? Click through for the rest of the press release from Kleinfelder. [/Editor]

 
San Francisco Millennium Tower Has Settled 16 Inches
GeoNews - Miscellaneous
Written by Randy Post   
Thursday, 04 August 2016 06:06

Millenium Tower in San Francisco, image - MLSThe residential high-rise Millennium Tower in San Francisco has settled a total of 16 inches since opening, 2 inches deferentially.  A spokesman for the tower owner blames the settlement on the excavation next door for the Transbay Transit Center, a  $2.4 billion dollar project being constructed 60 feet underground.

However, the Transbay Joint Powers Authority (Transbay) hired geotechnical firm Arup in 2010.  Their initial report indicated that the tower had already settled 10 inches by the time excavation began for the Transit center.  Arup seems to have been tasked with design, installation, and perhaps monitoring of a geotechnical monitoring program, some information on the scope is available in a 2012 presentation given by Arup available on the Transbay website.

[Editor] Click through for the rest of this post. [/Editor]

 
Good Intro Video on Drilled Shaft Construction
GeoNews - Available Resources
Written by Randy Post   
Wednesday, 03 August 2016 23:04

This is a really nice video for folks new to the industry who want to learn about drilled shafts. It has some great photos and hits the high points of what the advantages of drilled shafts are, a bit about how they are designed, construction methods and considerations, etc. [Source: Pier Research YouTube Channel via PileBuck Magazine. Image: YouTube]

 
GeoNews Collection for July 21, 2016
GeoNews - Miscellaneous
Written by Randy Post   
Thursday, 21 July 2016 06:09

Here's a catch-up-post with a list of articles I didn't get a chance to blog about. Enjoy!

 
Grain Bin Settlement Problems Common to Concrete Foundations Solved with NCFI’s Geotechnical Polyurethane Foam Technology
GeoNews - Press Releases
Written by Randy Post   
Thursday, 21 July 2016 05:59

Grain bin at a Williamsburg, Virgina poultry processing facility that had foundation settlement issuesNew Solution Saves Money and Time Preventing Loss of Grain and Equipment Damage

MOUNT AIRY, NC—Soil consolidation and settlement happens. It’s a fact of farm life. Secondary consolidation slowly forces water out of the spaces between soil particles. As this happens, soil particles move close together and settling occurs. Floors drop and become uneven. Newer grain silos and bins are using concrete floors instead of metal, and as secondary consolidation occurs beneath them, depressed or “settled” areas, form within the bin. Grain accumulates in the depressed areas, but cannot be retrieved by the bin sweeper. In fact, the sweeper, a kind of auger that transports grain up from the floor, can become damaged from prolonged exposure to the uneven floor.

This is exactly what Kirk Roberts of CJGeo, a Williamsburg, Virginia-based commercial foundation repair and geotechnical contractor, found when he got the job to repair the foundation of a massive 106-foot diameter grain bin at a poultry processing facility on the Eastern Shore of Maryland. “Once they removed the hundreds of thousands of bushels of grain, we found the floor had dropped some three inches in one section of the bin leaving a large pocket of grain out of reach of the bin sweeper.”

[Editor] Read on for the rest of this press release from GeoPrac sponsor NCFI Polyurethanes. [/Editor]

Last Updated on Thursday, 21 July 2016 05:59
 
Video: DeWind One-Pass MGP Remediation Project
GeoNews - Miscellaneous
Written by Randy Post   
Wednesday, 20 July 2016 23:38

This is a cool time-lapse video of a DeWind one-pass trencher installing 350 linear feet of 25' foot deep Groundwater Collection (HDPE slotted 4" pipe backfilled to grade with pea stone) in a single pass under the water table in a single pass. Their method and technology did not require any dewatering, shoring, or open excavations. [Source: YouTube via Read more about this interesting technology and company at DeWind's website. Image: YouTube]

 
DFI Announces the 2016 Outstanding Project Award Winner
GeoNews - Press Releases
Written by Randy Post   
Wednesday, 13 July 2016 05:52

hir120-1Hawthorne, NJ (July 7, 2016): The Deep Foundations Institute (DFI) is proud to announce that Hayward Baker is the 2016 Outstanding Project Award (OPA) winner for the design and construction of foundations at the International Market Place in Waikiki Beach, Honolulu, Hawaii.

The award will be presented at the DFI International Conference on Deep Foundations, Seepage Control and Remediation (41st Annual Conference) in New York City, October 12-15, 2016.

Opening in August 2016, the International Market Place, a well-known retail, dining and entertainment destination, has undergone a complete revitalization. Hayward Baker was the foundation contractor for the construction of a new 80,000 sq ft Saks Fifth Avenue anchor store, a 7-story parking garage and two 3-story retail structures located on a 6-acre site in a heavily congested area of Waikiki Beach. The company installed 544 micropiles to depths of up to 315 ft to support the structural loads. Difficult site geological conditions and cultural restrictions presented significant challenges for the design and construction of the foundations. The project site was located within the boundaries of an ancestral Hawaiian burial ground that required pre-excavation prior to any installation of below grade improvements. Additionally, two existing historic banyan trees on the site had to remain in place and not be trimmed for equipment access.

[Editor] Click through for the rest of the DFI Press Release. I’m proud to say that Hayward Baker is one of the sponsors of GeoPrac! Congrats to them on the award! [/Editor]

 
Geotechnical Monitoring Technology Seminar
GeoNews - Available Resources
Written by Randy Post   
Wednesday, 13 July 2016 05:34

hexagon_short_course1Hexagon Geosystems is offereing an inexpensive short course on geotechnical monitoring in Denver in on July 21.  Time is short, but it’s not too late to register.

July 21 2016 - Hexagon Geosystems - Denver, Colorado (Oxford Hotel)

This will be a high-level and engaging Short Course for Engineering and Geotechnical professionals that will cover recent advances in instrumentation and monitoring technology. Information and case studies will be presented from the following industries: civil, mining, transportation, water quality, and oil and gas. A cross section of industry leading experts will be presenting on exciting topics within our field. A question and answer panel discussion will complete the day, followed by libations.

The Short Course Fee is $95. Space is limited, so please register as soon as you can.

https://portal.leicaus.com/Register/E075/

hexagon_short_course2

Last Updated on Wednesday, 13 July 2016 05:34
 
In-Situ Has New Sales and Rental Catalog
GeoNews - Available Resources
Written by Randy Post   
Tuesday, 12 July 2016 22:53
In-Situ Water Monitoring Products

In-Situ, the makers of a variety of pressure transducers, piezometers, and other water monitoring equipment, have released a new sales and rental catalog. Some times it can be frustrating to have to wait for a sales person to get back to you with a quote, so I appreciate that they have put prices for sales and rentals in the catalog, it makes life much easier. I know the hydrogeologists in our office use their products extensively, and if you need to monitor groundwater in your geotechnical boreholes, or groundwater quality is an issue, you should definitely check out their products. [Source: Go Download the Catalog from In-Situ. Image: In-Situ]

 
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