Source: https://guthlabs.ai/docs/instruments/beam-deflection-cantilever-point-load-at-free-end/implementation/

instrument implementation / implementation-contract

# Beam Deflection — Cantilever, Point Load at Free End implementation

A source-bound implementation contract for Beam Deflection — Cantilever, Point Load at Free End; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## 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**: t2-010

**Effect**: Computation or source lookup only

## Input and validation requirements

The zero-modulus input makes deflection and slope undefined, and the specification provides no stated validation or unit/sign convention, creating additional boundary and interpretation hazards.

## 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": {
    "P": 1000,
    "L": 2,
    "E": 200000000000,
    "I": 0.000008,
    "units": "N, m, Pa, m^4"
  },
  "expected_outputs": {
    "delta_m": 0.001666666667,
    "theta_rad": 0.00125,
    "Mmax_Nm": 2000,
    "Vmax_N": 1000
  },
  "working": "L³=2³=8. δ=(1000×8)/(3×200000000000×0.000008)=8000/4800000=0.001666666667 m. L²=2²=4. θ=(1000×4)/(2×200000000000×0.000008)=4000/3200000=0.00125 rad. Mmax=P×L=1000×2=2000 N·m. Vmax=|P|=1000 N."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/beam-deflection-cantilever-point-load-at-free-end/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/beam-deflection-cantilever-point-load-at-free-end/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/beam-deflection-cantilever-point-load-at-free-end/qualification/>)

## Sources and evidence

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

- `VERIFIED_LEDGER.json`

- `evidence-tranche2/tranche2-results.json`