Monitoring of the settlement plates and deformation monitoring points stopped after the readings reached equilibrium, which was prior to the opening of the roadway. For Wall 8 (Contract 1), only two monitoring points (SP-36 and SP-37) indicated that the total measured settlement exceeded the project criterion of the maximum total settlement of 3.5 in (8.9 cm). For Interim Ramp CC (Contract 2), four monitoring points (SP-41, SP-42, SP- 44 and SP-47) indicated that the total measured settlement exceeded the project criterion. For both Wall 8 (Contract 1) and Interim Ramp CC wall, the settlement readings were collected during the construction and filling of the walls, not at the conclusion of wall construction. To Menard’s knowledge, the walls have been performing, as designed, wi th no significant settlement issues. Conclusion The CMC rigid inclusion ground improvement for the column supported embankments successfully supported the various loading criteria in addition to the embankments, MSE walls and roadways while satisfying the project specified settlement, bearing, sliding and external stability requirements. Many difficult working conditions were encountered and were safely overcome, including tight working conditions, various working elevations and close proximity to high- speed traffic. The measured settlements provide valuable information to ensure that the performance correlates with the design. Overall, the measured settlement at each wall that was monitored has aligned well with the design. The long-term settlement readings were not provided to Menard. To date, Menard has not received any notice that the walls were experiencing any excessive long-term settlements, therefore indicating that the project was completed and has performed as designed. Nina Carney, P.E., is a design engineer at Menard and specializes in the design of various ground improvement techniques and provides construction support. She has a B.S. in physics from Allegheny College, a B.S. in civil and environmental engineering from the University of Massachusetts, Lowell, and an M.S. in civil and environmental engineering from Carnegie Mellon University. Sarah Ramp, P.E., is a senior design engineer at Menard and is responsible for designing ground improvement solutions for multiple industries, including transportation, federal, industrial, ports and general building projects. She assists the construction teams by providing a high-level, quality control review during the construction phase of projects. Ramp has a B.S. and an M.S. in civil and environmental engineering from Carnegie Mellon University. Dylan Davis is a project manager at Menard and is responsible for the planning and execution of ground improvement projects. He has a B.S. in mathematics from Waynesburg University, as part of a 3/2 dual degree engineering program, and a B.S. in civil and environmental engineering with a certificate in construction management from the University of Pittsburgh. 80 • DEEP FOUNDATIONS • JAN/FEB 2019
