Free pad footing calculator to SANS 10100
Checks an isolated pad footing for bearing pressure, overturning, sliding, bending, shear and punching. Free, runs in your browser, and prints a calc sheet with clause references.
No install, no card. The result shows without an account; a free account opens every check with its clause, the calc sheet and the bending schedule for 3 designs a month (one calculator, 24 hours). Calculator packs, coming soon, remove the limit.
What the calculator checks.
Every check is shown with the working, the clause and a pass or fail.
- Self-weight of the base, column stub and soil added to every case, then qmax and qmin against your allowable bearing pressure
- Overturning and sliding safety factors
- Bending both ways at the column face (SANS 10100 cl. 4.3.3): K, lever arm, As,req, As,min and the bars chosen
- One-way shear at d from the face and punching on the 1.5d perimeter (cl. 4.3.4 and cl. 4.4.5)
- Column-face crushing and minimum steel
- Optional bearing capacity of the soil from φ′, c′ or cu and the groundwater level, on the effective area of the footing (SANS 10160-5 and EN 1997-1 Annex D)
- Plan, elevation and bearing pressure drawings, steel mass and concrete volume
Codes: SANS 10100-1, BS 8110, Eurocode 2 with EC7 (EN 1992-1-1)
A tool to check a design, not a design approval. Check the results and have the design signed by a registered professional engineer.
Short answers.
About this free calculator.
Is the pad footing calculator free?
Yes. It is free to use: enter your own values and every check shows on the page with its result.
Do I need an account?
No account is needed to use it: every check shows on the page with its result and clause, with a calc sheet summary. Without an account you see the result. A free STATIX account (email or Google, no card) opens every check with its clause, the full calc sheet to print or save as a PDF and the SANS 282 bending schedule for 3 designs a month (one calculator, open for 24 hours). Paid plans, coming soon, will make them unlimited.
Which code clauses does it use?
The calc sheet names the clause on every step: SANS 10100 cl. 4.3.3 for bending, cl. 4.3.4 for one-way shear and cl. 4.4.5 for punching. Choose BS 8110 or Eurocode 2 and the sheet follows that code.
Be first to use STATIX 3D and STATIX 2D.
Leave your email and we will tell you when each part is ready for testing. One confirmation now, one message then. A short monthly update only if you tick the box.