The work to be performed shall include a design build submittal by a contractor with helical pier experience. The scope includes both the design and installation of helical piers, along with underpinning brackets, placed every 6’-8’ as specified by the structural engineer. This stated installation is required along the north side of the building for the full length of the slab on 8490 Hospital Drive and the full length of the slab on the south side of the building at 8480 Hospital Drive. After the helical piers have been installed, the upper three feet of soil along the project and between the buildings shall be excavated and recompacted. Suitable fill material shall be placed in a maximum of 8” lifts. Any voids encountered in the area between or under the buildings on the 8480 and 8490 Hospital Drive properties shall be filled with structural fill, grout, or other suitable material. The Contractor shall coordinate with the engineer to determine the appropriate material for this purpose.
