Factor & margin of safety API

Computes factor of safety = strength/applied and margin of safety (FoS−1) for stress, load, or generic strength pairs, with a pass/fail against a required minimum. Answers 'What is the factor of safety?', 'Does this design meet the required safety factor?'.

Price$0.02per request

MethodPOST

Route/v1/engineering/factor-of-safety

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

engineeringmechanicsfactor-of-safetymargin-of-safetyfosdesignstrengthstructural

API URLhttps://x402.hexl.dev/v1/engineering/factor-of-safety

Integration docs

Example request

{
  "ultimateStrengthPa": 400000000,
  "appliedStressPa": 160000000,
  "requiredMinimum": 2
}

Example response

{
  "strength": 400000000,
  "applied": 160000000,
  "units": "Pa",
  "factorOfSafety": 2.5,
  "marginOfSafety": 1.5,
  "formula": "FoS = strength / applied; MoS = FoS - 1",
  "requiredMinimum": 2,
  "adequate": true,
  "interpretation": "Adequate margin."
}

Input schema

{
  "type": "object",
  "required": [],
  "properties": {
    "strength": {
      "type": "number",
      "description": "generic limiting strength"
    },
    "applied": {
      "type": "number",
      "description": "generic applied value"
    },
    "ultimateStrengthPa": {
      "type": "number",
      "description": "material strength (Pa)",
      "examples": [
        400000000
      ]
    },
    "appliedStressPa": {
      "type": "number",
      "description": "applied stress (Pa)",
      "examples": [
        160000000
      ]
    },
    "capacityN": {
      "type": "number",
      "description": "load capacity (N)"
    },
    "appliedLoadN": {
      "type": "number",
      "description": "applied load (N)"
    },
    "requiredMinimum": {
      "type": "number",
      "description": "required minimum FoS"
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}