Well Foundation Bearing Capacity Calculator | Mohan Dangi

Case A · Single Layer

Well Foundation Bearing Capacity

Interactive calculator for safe gross bearing capacity of well (caisson) foundations, computed live from soil and geometry inputs.

IS 6403-1981
FS per IS 1904-1986
qₛₐfₑ = (1/FS)·{cNcζcdc+qNqζqdq+0.5BγNgζgdgRw}

Case A

Single Layer

One uniform soil stratum at founding level

Case B

Two Layers · 2V:1H

Load spread through upper layer to interface

Case C

Multi-Layer c–φ

Bowles equivalent-layer method

Formula qsafe = (1/FS) × { c·Nc·ζc·dc + q·Nq·ζq·dq + 0.5·B·γ·Ng·ζg·dg·Rw }

Ground Profile Df = 15.0 m

Water table Scour level Soil layer Well shaft

Results

Safe Gross Bearing Capacity

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T/m²  ·  FS applied

Safe bearing capacity vs. founding depth

References — IS 6403-1981 (bearing capacity of shallow foundations, adapted for wells); IS 1904-1986 (factor of safety); Bowles, Foundation Analysis and Design, 5th ed. (1995), for the multi-layer equivalent method. This tool computes first-principles results per these standard methods; it is a design aid, not a substitute for independent verification by a qualified geotechnical engineer.

Client-side calculation only — no data leaves this page.