... prior to laying paving bricks or concrete flagstones in the sand, gravel and mixed soils in narrow trenches and along foundations, ... Series Forward Vibrating Plate Compactor is ideal for compacting of sand, gravel, macadam asphalt and paving stones, tough and reliable, low ... blocks8. Optional Trolley Wheel can be used to move the machine short distances between jobs. Plate Compactor HP-C120 Engine ...