Hi Ed,
Thanks for the information.
I checked the plans I received from builder, but couldn't work out which one has the "Wind rating" thing you mentioned.
The drawings I got are:
1. site plan
2. ground floor plan
3. first floor plan
4. elevations
5. elevation/cross-section
6. sediment control plan
7. concrete drainage plan
8. concrete slab plan
9. ground floor electrical plan
10. first floor electrical plan
11. kitchen
12. powder/laundry
13. bathroom / ensuite
Have I missed anything??