Site / Grading / Stormwater · IBC 2021 §1808.8.1 / Table 1808.8.1
Minimum Concrete Strength by Foundation Element
Footing and four pile or shaft types sketched against Table 1808.8.1 minimum f′c: 2,500 or 3,000 psi for footings by Seismic Design Category, 4,000 psi shafts and micropiles, 5,000 psi prestressed piles.. Referenced to IBC 2021 §1808.8.1 / Table 1808.8.1.
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