Whether you choose the poured concrete slab or the sono-tube footings construction for your foundation, the pier must be located and poured first in position. At this time it is essential to decide which type of foundation you wish to install for two reasons:
the electrical wiring to the pier should be installed in plastic pipe under or within the concrete slab if you plan to pour a complete cement floor.
the height of the concrete portion of the pier (the pier footing) must be pre- calculated to a greater height above the ground in a sono-tube footing and wood joist style observatory (usually about 2 ft high).
The pier must go in first for another reason; – regardless of the footing type, the building wall height relates to the footing and the finished pier top. A poured concrete slab footing positions the finished floor about 8 in. above grade with the concrete pier footing top another 2 in. higher, whereas a sono-tube-plus joist style floor construction will place the...
Concrete Slab Concrete Column Concrete Floor Anchor Bolt Base Slab
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