Mechanical & Civil Engineering
Geogrid Soil Reinforcement Tensile Demand Calculator
Estimate the required tensile strength of a geogrid layer reinforcing a soil slope or wall.
Your inputs
Change any value to update the result instantly.
Required tensile strength (Treq)
14.25 kN/m
Active earth pressure coefficient
0.333
Lateral stress at depth
19 kPa
Layer spacing
0.5 m
What this calculator does
Geogrid Soil Reinforcement Tensile Demand Calculator: Applies the standard civil and geotechnical relationship for this problem so the flow, pressure, settlement or capacity can be worked out from measured site inputs.
What your result means
The headline figure is the hydraulic or geotechnical quantity implied by your site inputs. Compare it against the design criteria in the applicable code before acting on it.
Formula and working
Treq = Ka × γ × z × Sv × FS
- 1
Collect the inputs
Soil unit weight = 19 kN/m³; Depth of reinforcement layer (z) = 3 m; Soil friction angle (φ) = 30 deg; Vertical spacing of layers (Sv) = 0.5 m; Factor of safety = 1.5
- 2
Apply the formula
Treq = Ka × γ × z × Sv × FS
- 3
Result
Required tensile strength (Treq) = 14.25 kN/m
Frequently asked questions
Symbols and assumptions
- unitWeight
- Soil unit weight (kN/m³)
- depth
- Depth of reinforcement layer (z) (m)
- frictionAngle
- Soil friction angle (φ) (deg)
- verticalSpacing
- Vertical spacing of layers (Sv) (m)
- safetyFactor
- Factor of safety
- • Steady-state, single-phase conditions are assumed unless the page says otherwise.
- • Site inputs (soil properties, flow, roughness) come from the user's own survey or testing.
Sources and review
Reviewed 2026-09-22 · Next review 2027-09-22
- • This is an educational estimate for learning and checking, not a design deliverable.
- • Real design must follow the governing code or standard for your jurisdiction and be reviewed and signed off by a qualified engineer.
- • Safety factors, load combinations and material certification are the responsibility of the designer, not of this page.
Important limitation
This is an educational estimate based only on the values and formula shown. Verify current rates, rules, units, and professional standards before relying on the result. It is not personalized financial or investment advice.
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