Frequently Asked Questions
What is the active earth pressure coefficient?
It is the ratio of horizontal to vertical stress in soil that is free to move slightly away from the wall. For level granular backfill it depends on the soil friction angle.
Where does the resultant thrust act?
Because the pressure grows with depth in a triangular distribution, the resultant force acts at one third of the wall height above the base.
Can I design a wall with this calculator?
No. It is a simplified Rankine estimate for level backfill with no surcharge or water. It is a planning estimate only, so consult a licensed engineer before building.
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Estimates for informational purposes only.
Important Disclaimer: Estimates for informational purposes only.
This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.