Foundation Settlement Calculator
Calculate foundation settlement with our free science calculator. Uses standard scientific formulas with unit conversions and explanations.
Formula
S = (Cc * H / (1 + e0)) * log10((P0 + deltaP) / P0)
This Foundation Settlement Calculator computes results from your provided inputs using the calculator's underlying model.
Frequently Asked Questions
What are the types of foundation settlement?
Foundation settlement consists of three components: immediate (elastic) settlement, primary consolidation settlement, and secondary compression (creep) settlement. Immediate settlement occurs as the foundation load is applied, due to elastic distortion of the soil without volume change. Primary consolidation is a time-dependent process where excess pore water pressure dissipates and the soil volume decreases, dominant in saturated clays. Secondary compression is long-term creep that continues after primary consolidation is complete, typically significant only in organic soils and soft clays.
How much settlement is acceptable for buildings?
Acceptable settlement depends on the structure type and the pattern of settlement. Total settlement limits are typically 25 mm for isolated foundations on clay and 50 mm for raft foundations. Differential settlement is usually more critical than total settlement because it causes structural distress. The angular distortion limit (differential settlement divided by span length) is typically 1/500 for frame structures and 1/1000 for sensitive finishes. Tilting of more than 1/300 can be noticeable to occupants.
Is my data stored or sent to a server?
No. All calculations run entirely in your browser using JavaScript. No data you enter is ever transmitted to any server or stored anywhere. Your inputs remain completely private.
How accurate are the results from Foundation Settlement Calculator?
All calculations use established mathematical formulas and are performed with high-precision arithmetic. Results are accurate to the precision shown. For critical decisions in finance, medicine, or engineering, always verify results with a qualified professional.
Is Foundation Settlement Calculator free to use?
Yes, completely free with no sign-up required. All calculators on NovaCalculator are free to use without registration, subscription, or payment.
What formula does Foundation Settlement Calculator use?
The formula used is described in the Formula section on this page. It is based on widely accepted standards in the relevant field. If you need a specific reference or citation, the References section provides links to authoritative sources.