NPS® Sismi PDTI® Column

Recommended for construction in seismic zones, the EN 1090-1 CE marked NPS® Sismi PDTI® Column is already seismic-resistant in the site phase and fire-resistant.

It is equipped with an anti-seismic device pre-installed at the plant to ensure seismic resistance from the construction phase. Since it has a ductility reserve greater than reinforced concrete systems, it absorbs seismic action better, reducing stress on the structure above.

Product Details

Technical data

Metal structure S275J0/S355 structural steel sleeve conforming to Standard UNI EN 10219-1. Beyond representing formwork for the casting formwork, it also comprises a hoop system around the central, internal concrete, increasing total resistance
Casting framework same class foreseen for the cast of above ground projects, up to C40/50
Self-supporting Yes
Welding helical or vertical (tube) and with fillet or completely clean (flange), realised using metal active gas welding (Process UNI EN ISO 4063-135)
Mechanical resistance to fire ( R ) Up to 120 minutes, due to its native features. Up to 240 minutes, if required.
Standards referenced For design and dimensions Eurocode 4 For structural nodes UNI EN 10219-1 For anti-seismic Eurocode 8 For fire-resistance EC4
Design Elaborated with NPS® calculation procedure conforming to the Standard in force, and signed by a qualified technician


China Eng. Stefano China,
Technical Director


In new construction, using NPS® Sismi PDTI® column allows for a better response to horizontal seismic action. It is particularly recommended for municipalities with an elevated seismic risk, and for buildings that have structurally irregular floor-plans and elevations.

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