The shortest measured distance from a damage feature or proposed work area to the nearest glass edge, hole, notch, cutout, or other stress-concentrating boundary.
GlassRenu · Educational illustration
Meaning and boundaries
Edge proximity is not the same as edge damage, but a surface flaw near an edge may interact with different stresses and restoration constraints.
Why it matters in glass restoration
Distance to boundaries should influence stop-work, blending, remaining-thickness, heat, and engineering-review decisions.
Related terms
References
- National Glass Association — GANA Glazing Manual, 2022 edition
Publisher’s original source - National Institute of Standards and Technology — Fractography of Ceramics and Glasses, 3rd edition
Publisher’s original source - National Glass Association — Construction Site Protection and Maintenance of Architectural Glass
Publisher’s original source