Ground improvement techniques are particularly well suited to load bearing structures (slabs, and columns supported on pads) in buildings, and more particularly industrial, wholesale and retail and logistics facilities. These types of project require rigorous organisation to manage scheduling and interfaces among a large number of project participants on the worksite. Rapid execution and on-time delivery are crucial to the success of these projects. Menard has developed ground reinforcement systems that cause little disruption (waste, noise, vibrations, etc.), can be rapidly implemented and are well suited to these types of projects. These solutions are also used to create safe and cost-effective surface foundations for these structures without direct mechanical connection between the foundations and the structure. This simplifies and accelerates construction and reduces the cost of the structure compared to conventional solutions using deep foundations.
CASE STUDY: FEDEX GROUND FACILITY, USA
Menard Group USA was awarded the ground improvement works for the support of a new 350,000 square foot FedEx Ground Facility in Jersey City, NJ.
The first 10-20 feet comprised of stiff to very stiff fill mixed with Processed Dredged Material (PDM) with potential for large obstructions. The underlying layer of clay and varved silts was soft with SPT-N values ranging from 0 to lower 10s. The bearing layer at depths of 100 to 130 feet was mostly comprised of glacial till with some cobbles.
With work starting in the midst of winter, Menard Group USA installed 4,300 Controlled Modulus Columns ranging from 100 to 132 feet in depth over. In order to reach such depths, Menard Group USA mobilized two specially-designed deep Controlled Modulus Columns rigs capable of reaching a depth of 150 ft. While the winter conditions and high winds in the area were a challenge, the Menard teams managed to complete the project without incident in less than 6 months.
32,500 m² Improved area