shed design

Looking to have a shed designed in structural steel to meet Category 5 cyclone resistance. Looking for barn style utilising stock hot rolled or RHS lengths with 7.4m (Based on 22 degree pitch) wide roof in the center, with 2 x 7.4m bays on either side and 14m deep.
Also a house extension drawn up for the same property.
and a pool in rendered block construction
Engineering certification would be an added bonus

Location is in North Queensland 4854