THE PLC TRENCHING MECHANICAL LAYING BOX AND INSTALLATION SYSTEM

    

 

 
 
 
 
 
 
 

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  • The carbide toothed wheel trenches through the existing ground (rock, concrete, asphalt pavement, loose stone or sand, hard fill, boulders, wet soil, gravel etc.)
  
   
  • The only area disturbed and material excavated is from the relatively narrow trench. The trench bottom compaction shoe flattens and compacts the bottom of the trench.
  
   
  • Our unique laying box is connected to and pulled along through the trench by the compaction shoe, and easily permits changes in direction, both up and down and from side to side. The laying box holds back the sides of trench keeping out all debris.
  

   
The utilities are fed down through the laying box by rollers or chutes to the proper depth.

Once the laying box passes and the utilities are installed the trench can be backfilled.

Tracer wire and warning ribbon can also be placed as the work progresses if required.
 
  When select bedding or backfill is required to encase or cover the utility, it can be accomplished in a number of ways. For sand, stone or other relatively dry material, our Select Material Transfer Cart is used.  The select material is placed into the cart that is connected to and pulled along by the trencher as the installation progresses.  Concrete or flowable fill may be directly deposited into the laying box material hopper from ready mix or flowfill trucks.

                     

 
   

When the select material enters the hopper at the rear of the laying box, a regulated amount is transferred forward and enters the laying  box in front of the utilities being installed.  The utilities are then placed down onto the bedding towards the rear of the laying box where select material encases the utilities.  The depth of the encasement is regulated by an adjustable Encasement Depth Strike Off.

                     

        

 		    
 
Copyright PLC Trenching Co., LLC 2007