Steel skeleton: S355J2 (3-6 mm, 355 MPa) + FEA calculation (ANSYS/SolidWorks). Cantilever overhangs to 1.2 m. Safety factor 2.5x. Vibration damping: EPDM/Neoprene → 95% absorption → onyx intact 50+ years. 350 kg modules → standard lift. Magnetic hatches: access in 15 sec.
Steel Skeleton: Load Calculation
S355J2 (wall 3-6 mm, 355 MPa) + powder coating + stiffeners. FEA audit (ANSYS/SolidWorks): deflection and torsion modelling.
Cantilever overhangs to 1.2 m without visible supports. Safety factor 2.5x. Deflection L/500 (stone), L/250 (décor). TIG/MIG welding + 100% NDT.
Vibration Damping: Silence in Structure
Skyscrapers micro-vibrate (0.1-5 Hz). For onyx (5-10 MPa, 35 GPa) deformation >0.3 mm = cracks.
EPDM/Neoprene dampers (Shore A 40-60, deformation 3-5 mm): 95% vibration absorption. Desk = autonomous stability island. Seam integrity 50+ years.
Modularity: On-Site Assembly
Sections 800×600×2500 mm (CNC ±0.1 mm). Max module weight: 350 kg → standard 500 kg freight lift.
10 m desk assembled in 6-10 hours. Tolerance ±0.5 mm. No on-site welding. Grade 12.9 bolts + Loctite 243.