Given the presence of dense, bouldery glacial till from approximately 20-30 feet below ground surface, permeation grouting was selected for groundwater control to bedrock beneath Posillico’s structural secant pile excavation support for the new 46th Street Vent Plant in New York City. Jet grouting was also used to close gaps around a water main that traversed the excavation. Read about this challenging project, published in this month’s issue of ADSC’s Foundation Drilling magazine, here. 42017 Moretrench_Posillico
You can read more about Moretrench’s Grouting and Groundwater Control Services here.
This premier 5-day short course covers grouting methods; ground freezing for shafts, tunnels and cross passages; and construction dewatering systems. More than 35 presentations are scheduled covering engineering, equipment, materials and methods, plus off-campus field and on-campus laboratory demonstrations, all by internationally recognized industry experts, makes this a must-attend event for owners, designers, contractors, consultants and suppliers. Take advantage of the many networking opportunities and earn while you learn, with course completion offering 3.5 CEUs.
Moretrench is a regular participant at the event, with three presentations being made this year:
The ADSC mid-Atlantic chapter of the International Association of Foundation Drilling (ADSC) will host a drilled shaft seminar on April 27th, 2017 at the Turf Valley Resort, Ellicott City, MD.
Engineers, contractors, inspectors and anyone interested in the advancement of deep foundations in the mid-Atlantic region will benefit from informative presentations by experts in the field, including Moretrench’s Jon Bennett, P.E. Plan to arrive the day before and enjoy a morning round of golf and an evening welcome reception.
Moretrench’s emergency response capability is second to none, and this was evidenced when the historic Old Croton Aqueduct in Yonkers, NY, was compromised by a significant landslide when a portion of the original retaining wall failed. Moretrench’s Michael Fattorusso and McLaren Engineering’s Thomas Broderick will present an interesting and informative case study on the challenges of installing a replacement retention system at the:
Handling coal ash management and storage procedures in order to keep facilities in compliance with current regulations, as well as adapting to future regulatory changes, is a hot topic in the Coal Combustion Residuals (CCR) community. Moretrench is in the forefront in assisting power companies with closure challenges through the engineered design and installation of pre-drainage systems. These systems have proven to expedite excavation or capping of CCR materials and enhance the safety of the excavation or grading and capping processes.
The recent EUCI Coal Combustion Residuals Conference, held in Atlanta, GA, from March 30-31, showcased the issues facing the power industry and steps currently being taken. A half-day pre-conference workshop led by Moretrench Senior Vice President Paul Schmall and Chief Dewatering Engineer Greg Landry discussed the behavior and responsiveness of ash to drainage methods, the wide range of techniques that can be used, associated water treatment methods, the geotechnical investigations necessary, geotechnical verification and monitoring, and new advances in the technologies. Paul Schmall was also a member of the Closure Services Contracting Panel which engaged in a discussion of “best fit” contracting practices.
“It was an excellent show. A recurring theme was the need for early dewatering. This was driven home by Anita Perry with Southern Company Services who also spoke to the need for in-situ ash monitoring. The concepts are sinking in!” – Paul Schmall