The issue of the interstorey drift

EN 1998-1 imposes the verification of level displacement for the seismic combinations:

The level displacement is limited to:

  • n ≤ 0,005 h,
  • n ≤ 0,0075 h,
  • n ≤ 0,010 h.

Depending on the nature of non-structural elements attached to the structure.

The Advance Design solution

Advance Design automates the verification of the interstorey drift.

To do this, the following actions need to be performed:

  • Activate the "Level" option of the systems;
  • Define/check the elevations
  • Define the levels’ numbering.

The table summarizing the level drift verification is available, after the seismic calculation, in the category "Seismic results by mode" / "Level drift verification for seismic combinations".

When editing the table cases/combinations list, it is necessary to select the “ECELUS” seismic combinations.

The following table appears:

If the verification fails, the “Incorrect” notification appears in red in order to facilitate the analysis.

GRAITEC Services
Free trial
GRAITEC Products
Advance Design
Advance Workshop
Advance BIM Designers
PowerPack for Revit®
PowerPack for Advance Steel
Autodesk Products
Cloud services
Advance Steel

GRAITEC GROUP 2018 | WE'VE UPDATED OUR PRIVACY NOTICE - Click here to find out more about how we collect, store and handle your personal data and your rights.