Yet, soil compaction is a science and it requires ... best apply this energy are rammers or sheepsfoot rollers, which produce both high impact and the necessary shearing force.

"Cohesive soils, made of silts and clays, are best compacted by the impact ... trench rollers. In addition to 34- or 24-in. drums, vibration in forward and reverse, high compaction force and ...

Highlighted at Wirtgen's 2024 North American Technology Days, the new Hamm HD 9 VV tandem roller offers contractors a clear-sided drum and improved hood design.