Rigid Concrete Inclusions (RCI’s) are a Ground Improvement method using unreinforced, concrete columns installed in very soft soils to meet settlement criteria and improve bearing capacity for support of shallow foundations and a ground bearing slab of a structure.


They are considered ground improvement because they are not structurally connected to the building they support. In addition to the RCI’s, an essential element of rigid inclusion ground improvement is the load transfer platform, or LTP/LTL. This is a layer of granular, structural fill that bridges the load between the RCI’s and prevents too much point stress on the footing.