Kamloops grew from a fur trading post into a transportation hub where the North and South Thompson rivers meet, and that expansion pushed development onto a variety of native soils. Glacial till, alluvial deposits, and patches of lacustrine silt all show up within a few kilometres of each other, so compaction verification is not just a box to tick—it becomes a practical necessity on nearly every earthworks job. The sand cone method remains our go-to procedure for field density testing because it is straightforward, reliable, and accepted by every municipality and consulting engineer in the region. When trench backfill goes in along Tranquille Road or structural fill is placed beneath a new warehouse floor on the Tk’emlúps reserve, we set up the apparatus directly on the compacted lift and get a result that reflects what the roller actually achieved. In coarse-graded materials where nuclear gauge readings drift unpredictably, the sand cone gives us a physical measurement that nobody questions during a site review. For projects where deeper stratigraphy matters, we often pair the test with test pits to identify buried organics or loose lenses before compaction begins.
A sand cone test gives you a physical volume and a physical mass—there is no calibration drift to argue about when the inspector shows up.
