🏗️ Building Repair Lab: Shoring Props, Lintel Load Path and Roof Restoration

Sequence the repair of a two-storey brick building: needle beams and Euler-checked props, cutting out a failing lintel, a new steel lintel on padstones, a Fink roof truss lifted by crane and snow loading. Every step changes the load path, and the capacity checks (M = wL^2/8, 5wL^4/384EI, P = pi^2 EI/(KL)^2, truss joint forces) turn red when a sequence is unsafe.

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install