Source: https://guthlabs.ai/docs/instruments/beam-deflection-fixed-fixed-point-udl/qualification/

instrument qualification / verified-with-binding-errata

# Beam Deflection — Fixed-Fixed, Point/UDL qualification

Verified with errata that must be applied at binding time.

Status: **VERIFIED_WITH_ERRATA**Lifecycle: **verified-with-binding-errata**

## Ledger verdict

Verified with errata that must be applied at binding time.

**Status**: VERIFIED_WITH_ERRATA

**Tranche**: tranche-2

**Review vectors**: 4

**Ledger rows**: 1

## Applied errata

No tranche erratum is attached to this unique-name record.

### Stress-test correction

````
{
  "vector_inputs": {
    "load_type": "central_point",
    "P": 7500,
    "L": 2.7,
    "E": 70000000000,
    "I": 0.0000135
  },
  "wrong_outputs": {
    "left_end_moment": -253.125,
    "right_end_moment": -253.125,
    "midspan_moment": 253.125
  },
  "corrected_outputs": {
    "left_end_moment": -2531.25,
    "right_end_moment": -2531.25,
    "midspan_moment": 2531.25
  },
  "method": "PL/8 = 7500*2.7/8 = 2531.25 N·m; her own working shows the division \"20,250/8=253.125\" — a 10x slip. The deflection field (0.0008136 m) used a separate correct calculation and was unaffected."
}
````

## Adversarial re-test context

The full catalog was re-tested from boundary, convention, and self-check angles in 2,787 requests. Five genuine computational defects were independently verified and corrected. This page reports the current ledger state for this instrument; it does not imply product deployment or interface qualification.

## Release gate

Bind every attached correction, replay the affected vectors, enforce boundary validation, and preserve evidence before describing the executable surface as qualified.

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/beam-deflection-fixed-fixed-point-udl/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/beam-deflection-fixed-fixed-point-udl/mechanism/>)[03**Implementation**](<https://guthlabs.ai/docs/instruments/beam-deflection-fixed-fixed-point-udl/implementation/>)

## Sources and evidence

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

- `VERIFIED_LEDGER.json`

- `STRESS_TEST_RECEIPT.json`

- `STRESS_TEST_CORRECTIONS_APPLIED.json`