Challenge

The subject property is comprised of 16) 2 story masonry structures and a pool building, with a total of 110 units. Initially one building was tested in September 2010 and found to have sinkhole activity. Several other buildings started to experience settling. The homeowners association requested all structures be tested. Central Florida Testing Laboratories, Inc. was hired to investigate and found sinkhole activity throughout the entire site. After the subsurface remediation, LRE was retained to completely remove and replace all the driveways and affected sidewalks.

Solution

Central Florida Testing Laboratories, Inc. recommended compaction grouting to stabilize the deepsubsurface soils. It was recommended that all structures be remediated. This was accomplished utilizing 1,030 grout points to an average depth of 48 feet. Following the compaction grouting, it was recommended that the upper loose soils needed to be addressed.

Project Summary

Geotechnical Engineer: Central Florida Testing Laboratories, Inc.

Contractor: LRE Foundation Repair

Compaction Grout: 49,000 feet of injection pipe and 3,550 CY of compaction grout installed

Chemical Permeation Grout: 2,700 Gallons installed

Flat Work: 70 Concrete sidewalks/driveways pulled/re-poured

Drill Casing installation for compaction grout

Drill Casing installation for compaction grout

Drill point for compaction grout

Drill point for compaction grout

Replacing concrete slab

Replacing concrete slab

Completed building

Completed building