Closed-form beam, section, column, stress, bolt and torsion formulas with typical material values, in SI or US units.
payments ON MAINNET (real money) · 8 live endpoints
| Endpoint | Price | What it answers |
|---|---|---|
GET /beam-deflection | $0.02 | Beam max deflection, end slope, reactions and max moment: simply supported or cantilever, point or uniform load. Educational. |
GET /beam-reactions-moments | $0.02 | Simply supported beam: reactions, shear and bending moment at a point, and max moment, for point loads plus optional UDL. |
GET /bolt-shear-bearing | $0.02 | Screening shear and bearing capacity of one bolt from allowable stresses you state; not a code connection check. |
GET /column-buckling | $0.02 | Euler column buckling load with K factors 0.5/0.7/1.0/2.0, slenderness ratio, and a flag when Euler does not apply. |
GET /material-properties | $0.02 | Typical handbook E, density, strength, Poisson ratio and expansion for steel, aluminium, concrete, timber, copper, titanium. |
GET /section-properties | $0.02 | Cross-section area, centroid, moment of inertia, section modulus, radius of gyration; parallel axis theorem. Educational. |
GET /stress-strain | $0.02 | Axial stress, strain and elongation from load, area, E and length; thermal strain/stress; factor of safety vs yield. |
GET /torsion-shaft | $0.02 | Circular shaft torsion: max shear stress tau = T r / J and angle of twist TL/(JG), solid or hollow. |
GET /catalog returns this list as JSON. Activity hub · uptime.
EDUCATIONAL ESTIMATES ONLY, NOT ENGINEERING DESIGN. Textbook closed-form formulas with idealised assumptions; no code-compliance check, no load factors, no stability or fatigue checks beyond what is stated. Do not use for design, construction or safety decisions; have a licensed engineer verify. Every paid response carries a disclaimer field.