Free RC shear wall calculator to SANS 10100
Checks a reinforced concrete wall under axial load, in-plane moment, in-plane shear and a transverse moment, and draws the force along the wall. Free, no install, 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.
- Wall or column, short or slender, and the slenderness limit (SANS 10100-1 cl. 4.8.1 and 4.8.5.2)
- Force along the wall by elastic analysis with no tension in the concrete; a cracked section when part of the wall is in tension (cl. 4.8.4.4)
- The most heavily loaded end strip with the transverse moment, the minimum eccentricity and, for slender walls, the additional moment (cl. 4.8.3.2)
- The whole wall in plane by strain compatibility over every bar row (cl. 4.8.4.3 and 4.3.3.1)
- In-plane shear by the beam method of cl. 4.3.4 with the horizontal bars
- Vertical and horizontal steel limits, bar spacing and crack control with two layers (cl. 4.11.4 and 4.8.7)
Codes: SANS 10100-1 (cl. 4.8 walls); or Eurocode 2 (EN 1992-1-1 cl. 9.6 walls, 5.8 slenderness, 6.1 and 6.2 shear)
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 RC shear wall 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 10100-1 cl. 4.8 for the wall, cl. 4.3.3 for the section by strain compatibility, cl. 4.3.4 for shear and cl. 4.11 for the reinforcement limits.
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