The problem of the subgrade is evidently that of finding what causes certain kinds of subgrade material to be soft and of very low bearing value and, having ascertained this, to determine what means ...

When installing road base, it must be spread over the subgrade to the required thickness. Then, the materials are compacted using a special machine, such as a roller or compactor.

Gregg Wartgow Oct 21, 2019 Cat CP56B vibratory soil compactor ---- Caterpillar’s IC solution, Cat Compaction Control, is available on its soil compactors such as the CP56B (pictured) ...

The Transportation Safety Board (TSB) of Canada has released its investigative report (R20W0102) regarding the 2020 derailment of a Canadian Pacific (CP) freight train near Ignace, Ontario. On May 25, ...