Beware of wind load calculators providing MWFRS (Main Wind Force Resisting Systems) wind load pressures when your permitting department is looking for Components and Cladding wind load calculations; better known as C&C wind load calculations.
The ASCE 7 provides wind load calculation for both MWFRS and C&C. C&C wind load pressures are for your structure’s openings such as windows and doors, as well as roof pressures all per zone. When you see Zone 1, 2, and 3 it is for the C&C wind load pressure calculations for a roof. When you see Zone 4 and 5 it is for the C&C wind load pressure calculations for a wall.
If you have any questions regarding wind load calculations, please contact us at CustomerService@windloadcalc.com