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Case Study: Clearing A Blocked Ditch and Two Culverts

The Problem: A Ditch and Two Culverts Blocked with 100 Tonnes of Silt

 

Our services were required to maintain the drainage system of an estate in Birdham. Two culverts and a ditch had become blocked with a dangerous level of silt.

clearing a ditch and culverts

Cutting roots in ditch and culverts

The ditch had become over grown with tree roots and weeds. The culverts were becoming clogged with silt. The maintenance was required as part of flood prevention work in the county. The ditch ran along the side of the housing estate and was essential to their drainage in the face of a large amount of rainfall. Without this work, flooding would be a serious danger for these properties.

Hydro Cleansing clearing a ditch and culvert

Our solution:

Following our site visit Hydro Cleansing established that the following were required to complete the job:

Three areas were blocked: a ditch 85m in length was blocked with approximately 80 tonnes of silt waste; one 450mm culvert that was 65m in length and one 450mm culvert which was 100m in length. The amount of waste in the culverts was confirmed on completion of the job as 13 tonnes. A 20,000 litre  bulk tanker brought the water supply for the high pressure jetting work which was required to dislodge the silt and mud from the tree roots in the ditch. The water was also necessary to jet through the culverts. The work was completed over 5 days. The CCTV team were there for 2 days completing pre work and post work surveys.

The 2 man team Jetting a culvert and ditch clearworked in the ditch, jetting the silt clear of the roots, while maintaining the essential tree roots.

The powerful suction of the super combination unit at 3500CFM meant that the silt was sucked away into the waiting articulated bulk tanker. The waste was removed and disposed of each evening at Hydro Cleansing’s own wet waste disposal plant.

 Tankers clearing ditch and culvert

Hydro Cleansing’s Result

Clearing the 85m ditch, 65m and 100m culvert and removing and disposing of 100 tonnes of waste was completed on time and meant the risk of flooding was significantly reduced. 

 

Wastewater Monster

Wastewater Monster

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