Posts treating: "frontpage"
Wednesday, 01 July 2015
Hatch Mott MacDonald received the prestigious ACEC Grand Award at the 2015 Engineering Excellence Awards Gala on April 21. ACEC had this project description in their program:More than six miles long and 43 feet in diameter, the new Niagara Tunnel is the largest renewable energy project in the world. Providing much-needed power for the city of Niagara Falls, it is located deep beneath the city and is more than one and a half times wider than the English Channel Tunnel.I blogged about this [...]
GeoPrac sponsor Moretrench was very active at the recent Rapid Excavation and Tunneling Conference in New Orleans earlier this month. VP Paul Schmall helped teach a short course on grouting in underground construction, and Director of Ground Freezing Technology, Joe Sopko, co-chaired the Grouting and Ground Modification technical session, and there were three technical papers presented on Moretrench projects. [Source: Visit the Moretrench Blog to read more about the conference and see what [...]
Peter K. Robertson, Ph.D., P.Eng, Professor Emeritus, University of Alberta, Technical Advisor, Gregg Drilling & Testing Inc. is the 2015 recipient of the H. Bolton Seed Medal for outstanding contributions to teaching, research, or practice in geotechnical engineering. He presented his keynote lecture at the 2015 IFCEE Conference in San Antonio. The title of the presentation was Evaluation of Soil Liquefaction - How Far Have We Come in the Past 30 Years?
[Source: Don't forget to [...]
A professional river guide came under fire for a rafting trip through the site of the Oso landslide. Families of the victims issued a cease and desist order, but the trip happened anyway. Opponents of the trip likened it to taking a trip through a graveyard, that it was disrespectful to those that died in the tragedy. Others noted that places like the site of the Boston bombing and the World Trade Center did not get to become off limits after their tragedies. The guide said that it was his [...]
NovoLIQ software by GeoPrac sponsor Novotech allows geotechnical engineers to perform soil liquefaction analysis. NovoLIQ covers several liquefaction triggering analysis including post liquefaction parameters and dry sand settlement. This program covers SPT, Vs and BPT and calculates factor of safety and many other analyses results. [Source: YouTube. Image:
National Driller magazine had a nice article not to long ago interviewing Kord Wissman about his transition from consulting to contracting. Kord is the President of Geopier Foundation Company (owned by Tensar). He has some very interesting insights, it's worth the read. I admire Kord as well for his involvement with the Geo-Institute and the GBA, he is very generous with his time and talents, more of us should be like him! I think GBA members can listen to his 'Going to the Dark Side' [...]
The Bertha TBM just received a shipment of spare parts to repair the giant tunneling machine. The manufacturer decided to redesign the seal system to make it easier to access from the inside, if necessary. That's probably a good idea considering the prospect of a repair like this one once the machine is moving beneath downtown Seattle. Other improvements and repairs to the TBM include: A new main bearingEnhanced monitoring systemsAdded steel to strengthen the machine and accommodate the new [...]
From the G-I eUpdate Newsletter:
The Geo-Institute is proud to announce the launch of its new website! With the same URL as before, www.geoinstitute.org, the website strives to support and communicate the value and dynamism of the geoprofession, preserve its integrity, and foster its growth.
Our easy-to-use website features efficient navigation and search, making our most popular and newest content easy to find. The appealing, new design allows GEOSTRATA articles to be easily accessed and [...]
GeoPrac sponsor Keynetix has announced some exciting news, a collaboration with the British Geotechnical Survey (BGS) on a research project to develop BIM models for geotechnical and geological data. Watch the video below, or read more in the Keynetix Press Release! [Source: Keynetix]
It's been a busy few months, as I note in my most recent email newsletter. Here are some stories I never got a chance to blog about.
Recap of the Need for Heave Mitigation - Source: Arizona Foundation Repair
Residential Foundation Issues - Heave or Settlement? - Source: Arizona Foundation Repair
DFI Announces 2015 Osterberg Memorial Lecturer - Source: Deep Foundations Institute (DFI)
Deep Foundations Magazine for November-December 2014 - Source: DFI
E.P.A. Issues [...]
The latest issue of the GeoPrac newsletter, number 053, is out. Did you miss it? Find out what I've been up to over the past few months. And catch up on things you missed, like:
New Soil Nail Manual
Houston Highway Stabilization
Ed Nowatzki 1936-2015
Most Popular GeoPrac Content!
Fred Kulhawy 1943-2015
Yeager Airport Failure
Read the GeoPrac.net Newsletter 053!
And if you haven't already, please subscribe to the newsletter (powered by Constant Contact, [...]
The City of North Haven is located on an island off the coast of Maine. This town was faced with a unique challenge when a bridge needed replacing. Looking for an economical option, designers decided on a Geosynthetic Reinforced Soil - Integrated Bridge System (GRS-IBS). This solution allowed the town and DOT to re-use an existing bridge pier, beat the construction deadlines, and provide a modern bridge solution for this small town.
[Editor] Read on for more on this fascinating project in a [...]
Familiar Team Enhances Air Quality Service Capabilities
OLATHE, Kan. — Terracon is pleased to announce the acquisition of AQS Environmental Inc. of Omaha, Neb. Founded in 1965, Terracon offers environmental, facilities, geotechnical, and materials services from more than 150 offices across the United States.
AQS is an air quality consulting firm with extensive experience solving mold, asbestos, lead-based paint, indoor air quality, and radon issues. AQS’s complementary service [...]
Bob Brown with Arizona Foundation Repair, a foundation repair contractor, has a nice blog post about the need for better standards for forensic investigations for residential foundation investigations. He points to some standards by a group called the Foundation Performance Association. Check it out if you are involved in residential foundation repair or forensic investigations. [Source: Arizona Foundation Repair. Image: Foundation Performance
A nine story apartment building in Guiyang city, China collapsed last week following heavy rains. Officials noted a landslide or mudslides were the apparent cause. There were as many as 16 people missing as rescuers searched the rubble of the 35 family residential building. [Source: Shanghaiist.com via USGS Landslide Events. Image:
Fred Howard Kulhawy was born in Topeka, Kansas on September 8, 1943 to Fred and Gloria (Hahn) Kulhawy. He spent his childhood and early adulthood in New Jersey, where he received his B.S.C.E. in 1964 from Newark College of Engineering (NCE), which is now a part of New Jersey Institute of Technology. He completed his M.S.C.E. from NCE in June 1966, married Gloria Ianna in September 1966, and they relocated to Berkeley, CA for educational pursuits. He received his Ph.D. from UC Berkeley in [...]
A private homeowner's retaining wall experienced a major failure near Colorado Springs, causing the evacuation of several families. According to KKTV, the homeowner obtained a permit to construct a 20 foot high retaining wall, however the wall stands at 36 feet high. As of Memorial Day, the three evacuated families have been allowed to return to their homes. The wall has now "completely fallen down." The original failure occurred after a period of heavy rain in the region. [...]
It is with great sadness that I report the passing of a mentor and former colleague, Dr. Ed Nowatzki, PE, PhD, D.GE, F. ASCE. His obituary can be found here. I first met Ed when I took his foundation engineering class at the University of Arizona. Ed was a fantastic professor, and his consulting experience really informed his lecturing making his course the best and most practical geotechnical class I had in school. I was privileged to work with Ed for several years [...]
The largest known undersea landslide occurred over 8,000 years ago off the coast of Norway. The volume of material that moved is mind-blowing, over 4.6 X 1012 cubic yards or 850 cubic miles! Known as the Storegga landslide, the resulting tsunami buried neolithic settlements in Norway with sediment and caused wave runnup in Great Britain that was 80 feet higher than the normal high tide. The devastating loss of human life can only be imagined. Regarding that last question, anthropologists [...]
Houston’s Highways, Some of Busiest in Nation, Use Innovative TerraThane Polyurethane Foam Technology to Repair Bad Bridge Approaches, Uneven Joints, and Roadway Depressions.
MOUNT AIRY, NC—Highways around Houston, TX, known as one the nation’s worst cities for traffic behind Los Angeles, D.C., and Atlanta, need constant repair, but can’t be closed while the work is done. Nortex Concrete Lift and Stabilization, Inc., a Ft. Worth, TX company, recently completed a [...]