Problem:

The concrete slab for this garage had settled over three inches. The settlement was most likely caused from poorly compacted fill soils underneath the damaged concrete slab.

Solution:

Northeast Helical LLC mobilized portable equipment to repair the concrete slab. Multiple access holes were drilled in the slab through which the slabjacking materials were pumped through. The underslab voids were initally filled, and then the grout was pumped under pressure raising the concrete slab up over three inches.

This project was successfully completed in one working day

Problem:
This 40-foot wide concrete retaining wall was tipping over into the adjacent property.  The wall was built approximately eighty years ago and it retained about six feet of soil.  Removal of the wall was extremely difficult in that access to the working area was very limited.  Structural stabilization of the wall was the desired result.          

Engineering Design:
Northeast Helical and Phelan Engineering designed an earth support plan consisting of six helical tiebacks with galvanized wall anchors. Portable equipment was utilized to install the piles.  Furthermore, carbon fiber sheets were used to structurally reinforce the wall face.  Gravel was placed behind the wall to relieve both soil and water pressures. 

Project Details: 
The helical tiebacks advanced to about eight feet behind the wall, anchoring into the stable soils.  Northeast Helical removed and replaced a fence at the upper side of the wall.  The retaining wall was structurally repaired in approximately five working days.