PROPERTY MANAGEMENT PROJECTS

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Email: info@wrmaeng.com
Office: 772.266.4799
Stormsewer Pipe Break Assessment and Emergency Repairs
Danforth Creek Subdivision, Palm City, FL

The Danforth Creek storm sewer system consists of four (4) interconnected lakes, inlets collecting runoff along streets and in open areas and two outfalls with control structures. Bituminous Coated Corrugated Metal Pipe (BCCMP) material was used to interconnect the inlets to the lakes.


Urgent Problem: Early in October a homeowner reported soil subsidence and wetness between lots 337 and 338 at SW Waterview Place approximately 15 feet from the road. Preliminary investigation indicated this to be the location of a 24” stormwater pipe discharging runoff to Lake 1 from an inlet at SW Waterview Place.


Solution: WRMA was tasked to perform a detail investigation of the soil subsidence and perform an emergency repair of the pipe. The emergency repairs were performed on a time and material basis for WRMA and its subcontractor. WRMA contracted with Sunshine Land Design to excavate in the location of the reported subsidence. The dig resulted in the exposure of the 24” pipe with two 6-inch cuts longitudinal to the pipe circumference. The cut was performed when electrical lines were being installed immediately above the stormwater pipe (See attached pictures). It appeared that when the cut took place, a repair was attempted by placement of sand-cement bag rip rap around the pipe. However, the bags came loose and water started to seep out of the pipe when the lake levels increased during the rainy season. The pipe repair included wrapping the pipe with a collar made of impermeable material, packing small to medium rock around the collar to keep the collar in place and pouring cement through and around the rock pack to seal the collar in place. Upon curing of the concrete and removal of the plug, the pipe was slowly filled with lake water and observed for any leaks. No leaks were evident and the fix was considered successful. Once the trench was backfilled with top soil, new Floritan sod was placed to restore the site to its existing condition.


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