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.