To check for plan irregularities per Eurocode 8 such
as re-entrant corners, slenderness, and torsional radius, use the following
procedure.
This set of checks is to enable you to
be able to classify the building as being 'regular in plan.' Checks will be performed
and the results will be displayed graphically in the GUI. The program primarily checks
for the main three plan regularity conditions set out in EC-8 viz.
- Checks for re-entrant corners in floor
slabs – The program performs checks on each floor slab and reports whether the
condition set out in EC-8 for re-entrant corners has been satisfied.
- Check for slenderness of structure –
The program calculates a
slenderness ratio
for the structure based on the
maximum dimensions on plan and reports whether the EC-8 criteria are satisfied.
- Checks for torsional radius: - The
program calculates the torsional radius for each floor and checks against the
conditions set out in EC-8.
-
Select the
EC8 Plans page in the
Earthquake page control bar.
The
Check Regularity in Plan dialog
opens along with the
Slab Re-Entrant Corners and
Torsional Radius Check tables.
Tip: You
may have to re-arrange the dialog and tables to display all windows.
-
To check for re-entrant corners:
-
In the
Check Regularity in Plan dialog,
expand
Clause 4.2.3.2(3) - [Re-Entrant Corners].
A child entry is present for each floor in
the structure.
-
Select each floor to review any detected re-entrant corners.
The details of any detected re-entrant
corners are displayed in the
Slab Re-Entrant Corners table.
-
To check for structure slenderness, expand
Clause 4.2.3.2(5) - [Slenderness] in the
Check Regularity in Plan dialog.
The slenderness ratio and status for the
structure is reported.
-
To check torsional radius, select the
Torsional Radius Check table.
The ratio of each torsional radius check for
each floor along with the status of the check is reported here.