Inspiring Artscapes

Compaction of Subgrade in a Trench

Publish by Publié par Sophie Rhéaume on le Dec 2, 2017 4:02:52 PM

A lack of compaction is the number one reason for failure on hardscape projects. Here Paver Pete demonstrate options for compacting the soil subgrade in a trench.


 

There are a couple of criteria that need to be considered when choosing equipment to compact the soil subgrade in a trench.

  • Size of the space
  • Centrifugal force rating of the equipment
  • Reversibility of the machine
  • Type of soil to be compacted

Here are 3 types of compaction equipment we analyzed.

  • 12,000-pound centrifugal force rated vibratory plate compactor

Its reversibility is perfect for compacting base material when we have more than 8-inch lifts.

In this situation, we have a very sandy soil, so we don’t need that much strength.

12000.jpg

  • 7,200-pound centrifugal force rated vibratory plate compactor

It is also reversible, so it improves productivity when we work in a trench.

7200-1.jpg

  • Amplitude-based compactor, also called a jumping jack

It would not be effective in an open area that has a sandy soil, but it works well in a restricted area like the trench we have here.

jumping jack-2.jpg

 

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Subjects:Sujets: PAVER PETE, CONSTRUCTION, SRW, TECHO-BLOC, SEGMENTAL RETAINING WALL, VIBRATORY PLATE, CENTRIFUGAL FORCE

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