Compaction Equipment
Professional compaction equipment for site preparation, trench backfill, and asphalt work. We stock Tomahawk Power and Wacker Neuson plate compactors, jumping jack rammers, and roller compactors — all with $0 sales tax in 45+ states and free freight on orders over $199.
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How to Choose
How to Choose Compaction Equipment
1. Soil type determines compactor type
Granular soils (sand, gravel) compact best with vibrating plate compactors — the vibration rearranges particles for maximum density. Cohesive soils (clay, silt) require impact compaction from jumping jack rammers — the impact force overcomes the cohesive bonds between particles.
2. Forward-only vs reversible plates
Forward-only plate compactors are lighter, more maneuverable, and suit thin lifts of granular material. Reversible plate compactors provide higher compaction force and can work in confined spaces by reversing direction without turning around. Choose reversible for deeper lifts and mixed soils.
3. Match compaction force to specification
Engineering specs typically call for 90-95% Standard Proctor density. Check your project specifications for the required compaction standard and select equipment that can achieve the specified density in your soil type at your planned lift thickness.
4. Trench work requires rammers
For narrow trenches (utility, plumbing, foundation), jumping jack rammers with 6-11" shoe widths are the standard tool. Their vertical impact force compacts cohesive backfill material effectively in confined spaces where plate compactors cannot reach.
5. Engine selection
Honda GX and Kohler engines are the industry standard for reliability and parts availability. Tomahawk Power equips their compactors with these engines. For indoor or confined work, electric or battery compactors eliminate exhaust fumes.
Buying Tip
Pro tip: For mixed-use contractors, a reversible plate compactor and a jumping jack rammer cover 90% of compaction needs. Add a rubber pad kit for the plate compactor when doing asphalt work.
Frequently Asked Questions
For residential walkways and patios (2-4" lifts of granular base), a 3,000-5,000 lb force forward plate compactor is sufficient. For commercial base preparation and parking lots (4-8" lifts), a 6,000-10,000 lb reversible plate is standard. For asphalt compaction, use a rubber pad plate compactor to avoid marking the surface.
Plate compactors work poorly on cohesive soils like clay. The vibration tends to fluidize clay rather than compact it. For clay and other cohesive soils, use a jumping jack rammer — the impact force is far more effective at achieving density in these materials.
A plate compactor uses high-frequency vibration to compact granular soils (sand, gravel). A jumping jack rammer uses high-impact percussive force to compact cohesive soils (clay, silt). Using the wrong type for your soil will result in poor compaction and potential failure of the structure above.
Field testing methods include the nuclear density gauge (most accurate), the sand cone test, and the Dynamic Cone Penetrometer (DCP). Your project specifications will define the required density standard (typically 90-95% Standard Proctor). For smaller residential projects, a proof roll with a loaded truck can identify soft spots.
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