Wind wizard (EC1991 1-4)

To access this configuration of the wind wizard the Wind Loading Code has to be set to BS EN 1991-1-4.

Once the wall and roof panels are in place, you use the wind wizard to define sufficient site information to calculate the peak wind velocity and velocity pressures for the required wind directions and heights around the building, (that is the Reference Heights (z_e and z_i) for each wall panel or roof panel).

The wind velocity calculations are automated, with the data source for the calculations being either:

Input directly for the worst case,
Input directly for each direction,
taken directly from the BREVe database^Ref.
6 which is based upon the Ordnance Survey data of Great Britain (only available for users working to the UK or Ireland National Annex).

Unless explicitly stated all calculations in the wind wizard are in accordance with the relevant sections of EC EN1991 1-4 ^{Ref. 1} and the chosen National Annex. It is essential that you have a copy of the code and National Annex with you while assessing wind on any structure.

We would recommend having the following books to hand when using the software:

Designers' Guide to EN 1991-1-4. Euro Code 1 : Actions on Structures, General Actions Part 1-4 : Wind actions. ^Ref.
4
Wind Loading - a practical guide to BS 6399-2 Wind Loads on buildings. ^{Ref. 5}

In addition, you may find the following book useful:

Background information to the National Annex to BS EN 1991-1-4 and additional guidance. PD 6688 - 1-4:2009. ^Ref.
3