Case Studies Studies in continually exceeding expectations


MJK has extensive experience in a multitude of shoring disciplines, from sheet pile, z-sheet, wale frame, box, slide rail, jack and beam, and hydraulic jack methodologies, we have installed them all.

Whether working to stabilize a hillside home, provide access under multi-story college dormitory, hold back high ground water, or to simply provide safe excavation entry for workers, MJK has provided shoring services for two decades.

Case Study: Shoring High Groundwater


Project: Replace underground fuel tanks and install brine system to support facility operations center.

Challenge: This multi-story facility is located in an area of high ground water (2’ bsg) requiring installation of specialized shoring and constant water control measures. Of greater challenge was the proximity of our work to the surgical and maternity centers of this major hospital. Work had to be coordinated to insure that vibration and noise from our work did not impact scheduled surgeries or upset maternity patients.

MJK Solution: MJK worked with engineers to design a shoring plan which could prevent intrusion of water into the work area over an extended period of time. MJK brought in a temporary aboveground storage tank, and installed pumps which operated 24/7 to keep water pumped out of the excavation. We coordinated with hospital personnel on surgical schedules, and conscientiously focused on noise reduction measures in an effort to minimize disturbance to patients.

Case Study: Shoring Safe Entry


Project: Shore an excavation to facilitate underground fuel tank installation adjacent to multi story buildings.

Challenges: Because of the proximity to a multi-story building, and the overall size of the proposed excavation, it was necessary to design and install a shoring system which would provide lateral support to the adjacent structure, protect workers, and provide sufficient maneuverability within the excavation to install the tanks.

MJK Solution: MJK developed a shoring plan which accommodated the lateral forces, and provided workable access. This plan was submitted to an independent engineering firm for review and approval. MJK installed a beam and sheet shoring system which provided access, but also allowed for easy removal during backfill operations.

Case Study: Shoring Around Existing Structures


Project: Shore and excavate to expose existing fuel storage tanks as necessary to facilitate modifications to piping and tank top.

Challenge: Shoring around existing underground structures presents unique challenges. These challenges are compounded when the structures are made of fiberglass and contain 60,000 gallons of fuel. Work in the main access to a facility where 30 semi trucks pass by each day, then add in a four story parking structure within 10 feet of the excavation wall, and you have a real job on your hands.

MJK Solution: Precisely identifying the location of these tanks, constantly measuring and re-measuring, for tank deflection, and shoring materials deflection, and working in incremental steps, we installed shoring around this existing central plant area to provide support to the adjacent parking structure, and provide access to workers to reconfigure the tank top equipment and piping. Adjacent structures were monitored for movement, and access for deliveries was maintained at all times.