Slenderness ratio & column class

Code snippets

curl "https://api.oanor.com/buckling-api/v1/slenderness" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/buckling-api/v1/slenderness", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/buckling-api/v1/slenderness");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/buckling-api/v1/slenderness",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "formula": "λ = K·L/r; transition λ1 = π·√(2E/σy) separates Euler (long) from Johnson (short) columns.",
        "length_m": 2,
        "column_class": "long (Euler buckling governs)",
        "end_condition": "pinned-pinned",
        "slenderness_ratio": 160,
        "effective_length_m": 2,
        "radius_of_gyration_m": 0.0125,
        "transition_slenderness": 125.663706,
        "effective_length_factor_k": 1,
        "euler_critical_stress_mpa": 77.106284
    },
    "meta": {
        "timestamp": "2026-06-04T10:18:50.995Z",
        "request_id": "07a058c0-b1d1-41cc-a04e-b63349027031"
    },
    "status": "ok",
    "message": "Slenderness ratio & column class",
    "success": true
}