New models have joined the ASC tandem roller range that Ammann launched last year with the ASC 170. The new ASC 110, 130 and 150 cover weight categories from 12.2-17.7US tons (11-16tonnes). Adaptations to the drum width, a reduced drum frame width and a weight transfer in the drum frame have resulted in a static line load increase of more than 10% for the same overall weight. Each one of these tandem roller models therefore achieves compaction results that are comparable to those of conventional products of the next higher weight category, claimed Ammann. It said that compact dimensions increase the maneuverability and stability of the machines and make transportation by road and container a much easier task.