![]() ![]() A bin, shop or garage foundation in the Central Alberta area often sees a fairly thick compacted substructure carrying a reinforced concrete slab with thickened edges. Depth of gravel & compaction can vary with the design, and the concrete & reinforcing specification can range a lot. ![]() There are a lot of design variations depending on the subsoil and design intent. Floor and foundation are poured simultaneously. A reinforced concrete slab is then poured on top of this substructure. ![]() The parent material is exposed and compacted, and layers of pit run and crushed gravel are built up and compacted on this. How much is done depends on the type of soils in the area and design loadings of the slab. This is often accomplished through varying amounts of subgrade modification and strengthening. For a more detailed review, start here.ĬementWright can provide a range of scopes involved in constructing a concrete slab foundation, excavation, site prep, rebar, forming, & concrete, or we can contract for the full foundation project including design.Ī general principle behind a slab on grade foundation is construction of a coupled material envelope which loosely moves as one unit. The grain bins exceeded the bearing capacity of the soil and tipped shortly after loading they were ultimately righted and are still in use today. The Transcona grain elevator, circa 1913 (Archives of Manitoba, L.
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