03Structural & engineering
How strong is the structure?
Cavity walls are filled with 40 MPa (≈5,000+ PSI) concrete — the same grade used in bridges and high-rises. The result is a monolithic reinforced-concrete structure with a design service life of 140+ years.
40 MPa5,000+ PSI140+ YR LIFE
Is it seismic-rated?
Yes. The monolithic shear-wall geometry is well suited to seismic loading, and structures are engineered to the relevant seismic provisions for each jurisdiction. As with any building, the governing seismic design is finalised by the project's engineer of record and reflected in the PE-stamped plans.
Who stamps the engineering?
A licensed professional engineer. Every project is delivered with PE-stamped plans demonstrating code equivalence, so the structure is certified the same way any reinforced-concrete building is.
How is it tested?
Concrete strength is verified to ASTM C39/C39M (compressive strength of cylindrical specimens), alongside the layer-by-layer computer-vision record. Printed wall systems are evaluated against ICC-ES AC509, the acceptance criteria for 3D-printed concrete walls.
ASTM C39/C39MICC-ES AC509