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Drilled Piers

Deep Foundations Drilled to bearing

A drilled pier is the one element of a structure nobody ever sees again. Once concrete goes in the hole, the only record of what was down there is the log somebody wrote or did not write. That makes pier work as much a documentation discipline as a drilling one. Baker Concrete Solutions drills piers and caissons for commercial and industrial structures throughout Colorado, from layout and drilling through bearing verification, cage setting, concrete placement, and the pier logs that go back to the geotechnical and structural engineers. We work to the Geotech report, not to a standard detail, because the ground changes across a site and the report is the only thing that knows how. Piers rarely stand alone, and neither do we, the same crews carry the work up through grade beams, walls, and columns, so the foundation package does not change hands at the hardest interface.

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Why Colorado Builds on Piers

Much of the Front Range sits on expansive claystone and bentonite that swells when it takes on water and shrinks when it dries. Shallow footings on that ground move, and buildings move with them. Drilled piers solve it by going past the active zone and transferring load into competent bearing below, friction in a bedrock socket, end bearing, or both.That is why piers and grade beams are the default commercial foundation across so much of Colorado, and why the geotechnical report drives everything: pier diameter, depth, bearing criteria, reinforcing, and how much void space the structure needs underneath it to stay clear of heave.

•       Straight-shaft friction piers socketed into bedrock
•       End-bearing piers to competent material
•       Belled and underreamed piers where the design calls for added bearing area
•       Cased piers through caving soils, fill, and groundwater
•       Rock-socket piers in hard bearing strata
•       Wet-hole piers placed by tremie where groundwater cannot be dewatered