curl --request POST \
  --url https://api.iotools.cloud/v1/tool/beam-load-calculator \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "beamType": "simply-supported",
  "span": "3",
  "udl": "5",
  "pointLoad": "10",
  "momentOfInertia": "8360000",
  "extremeFiberDistance": "150",
  "crossSectionArea": "5000",
  "shearShape": "average",
  "material": "structural-steel",
  "elasticModulus": "",
  "allowableBendingStress": "150",
  "allowableShearStress": "100",
  "deflectionLimit": "360"
}
'

{
  "tool": "beam-load-calculator",
  "tool_version": "1.0.2",
  "outputs": {
    "results": [
      {
        "metric": "Maximum Bending Moment",
        "value": "13.13 kN·m"
      },
      {
        "metric": "Maximum Shear Force",
        "value": "12.50 kN"
      },
      {
        "metric": "Bending Stress (σ = M·c/I)",
        "value": "235.5 MPa"
      },
      {
        "metric": "Shear Stress (τ)",
        "value": "2.500 MPa"
      },
      {
        "metric": "Maximum Deflection",
        "value": "6.518 mm (0.2566 in)"
      },
      {
        "metric": "Serviceability Check (Deflection)",
        "value": "L/460.2 — meets the L/360 serviceability limit"
      },
      {
        "metric": "Strength Check (Bending)",
        "value": "FAIL — 235.5 MPa exceeds 150.0 MPa allowable"
      },
      {
        "metric": "Strength Check (Shear)",
        "value": "PASS — 2.500 MPa ≤ 100.0 MPa allowable"
      },
      {
        "metric": "Elastic Modulus Used",
        "value": "200.0 GPa"
      },
      {
        "metric": "Note",
        "value": "Preliminary design check only — verify against your governing design code's strength and serviceability provisions."
      }
    ]
  },
  "credits_used": 5,
  "credits_remaining": null
}