Impact Load Factor Calculator implementation

Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

Record owner

Guth Instruments

Lifecycle

verified-clean

Evidence ID

t5-179

Effect

Computation or source lookup only

Input and validation requirements

The formula is undefined when static deflection is zero, and a negative signed height can produce a negative square-root radicand unless the input is explicitly interpreted as a nonnegative drop-height magnitude.

Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

{
  "inputs": {
    "h": 0,
    "delta_st": 0.004,
    "static_stress": 80,
    "length_unit": "m",
    "stress_unit": "MPa"
  },
  "expected_outputs": {
    "impact_factor_n": 2,
    "dynamic_deflection": 0.008,
    "peak_stress": 160,
    "length_unit": "m",
    "stress_unit": "MPa"
  },
  "working": "2h/δst = 2·0/0.004 = 0. n = 1 + √(1 + 0) = 1 + 1 = 2. Dynamic deflection = n·δst = 2·0.004 = 0.008 m. Peak stress = n·σst = 2·80 = 160 MPa."
}

Other records

Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

• VERIFIED_LEDGER.json
• evidence-tranche5/tranche5-results.json