Felling Notch and Hinge Geometry
Recommended open-face notch depth, hinge thickness, and hinge width from the felling-cut diameter, with the ANSI Z133 cautions. A qualified faller governs.
Formula and source
notch_depth = dia x notch_pct/100 (default 22%); hinge_thick = dia x 0.10; hinge_width = dia x 0.80; open-face angle 70 deg or more.
ANSI Z133-2017 (Arboricultural Operations - Safety Requirements) open-face felling practice by name; standard faller guidance.
Audience
This tile is built for agriculture and the adjacent professions in the Agriculture and Forestry group. The interactive calculator runs entirely in your browser. No account, no fee, no advertising, no tracking.
Related tiles
Posture
Rough Logic answers the math question the working professional asks on the job. The site is a calm, fast, ad-free, account-free, ever-free reference. It does not interpret code. It does not replace the licensed professional. It does not store your inputs. The Authority Having Jurisdiction governs all installations and inspections.