More force returns to the machine, making it lift off the ground higher in its stroke cycle. This sets all particles in motion and compaction takes place.ДЄs the soil becomes compacted, the impact has a shorter distance to travel. Vibratory and rammer-type equipment compacts soil in the same direction: from top to bottom and bottom to top.ДЄs the machine hits the soil, the impact travels to the hard surface below, and then returns upward. Lift height is the depth of the soil layer, and itвЂ™s an important factor that affects machine performance and compaction cost. The apparent amplitude increases as the material becomes denser and compact. The apparent amplitude varies for each machine under different jobsite conditions. Double amplitude is the maximum distance a vibrating body moves in both directions from its axis.

Frequency is expressed in vibrations per minute (vpm) for plates and blows per minute (bpm) for rammers.ДЄmplitude is the maximum movement of a vibrating body from its axis in one direction.

Each compactor operates at an optimum frequency to supply the maximum force. Here are a few terms that you need to be familiar with when considering purchasing compaction equipment.ДЇrequency is the speed that an eccentric shaft rotates or the plate jumps.

Then review the detailed info in this article to build-up your knowledge base. Use this guide as your starting point when discussing equipment purchases with a White Cap associate. For a quick overview, the selection guide below cross-references the different soil types with the appropriate equipment options. The goal of this article is to help you gain a deeper understanding of the compaction machinery options and when to use them. Choosing the right compaction equipment is an important decision.

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