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Arch Thrust Line 2D — Rise, Load & Middle-Third Stability

Interactive 2D thrust-line diagram for a stone arch: dial in the rise/span ratio, arch thickness, a point load's position and magnitude, and watch whether the compression thrust line stays inside the arch's middle third or pushes the structure toward cracking and collapse.

Engineering & Materials2DModerate60 FPS📱 Mobile-adapted🟠 Blender⇄ 3D version

This 2D side-view diagram computes the true minimum-offset line of thrust of a compression-only stone arch (the graphic-statics calculation an engineer checks), including the arch's own weight, and reports the geometric factor of safety, with Blender-rendered limestone and a live numerical check suite.

⚙ Under the hood

Interactive 2D masonry arch: finds the most central line of thrust numerically (including the ring self-weight), reports the middle-third state and Heyman geometric factor of safety, with Blender-rendered limestone and five numerical checks.

archthrust linecompressionmasonrystructural engineeringmiddle thirdstatics

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install