Memphis Pyramid: Bass Pro Shop
Situation: The Memphis Pyramid, future home of Bass Pro Shops, needed to undergo
redevelopment and demolition. The footings under (supporting) the precast
concrete (10 ft. wide x 44 ft. tall) panels at the base of the pyramid
had settled up to 6 inches. This settlement caused panels to crack and
pull away from the upper deck mezzanine level. The soils report indicated
a very soft soil layer beginning approximatley 15-feet below grade. The
blow count of the soil ranged between 1 and 10 until about 45-feet below grade.
Solution: Ram Jack of Tennessee was awarded the opportunity to work with Montgomery Martin on the Memphis Pyramid Redevelopment Project, Package 3A - Seismic. Starting in quadrant #4 (NE corner) 16 triple helicals were driven an average depth of 58 ft. From there, they moved to quadrant #3 (NW corner). Immediately, they discovered the sub-strata soil difference from Q4 where the first 7 triple helicals went an average depth of 94 ft. When moving to quadrant #2, RJTN had to bring in a larger excavator to help in the excavation process and clearing the debris within the top 8-10 ft. of soils.
Conclusion: Ram Jack of Tennessee finished on time and within budget. They were able to raise the footings using the Ram Jack patented helical piling system.