Exposure before material
Abilene's annual mean wind sits meaningfully above San Angelo's on the NCEI comparative record, and that shows up in what a structure has to carry. On an exposed lot we look at the header, the posts and the fixings before we discuss fabric at all — because an exposed opening asks more of the structure than a sheltered one.
- Prevailing exposure is assessed at the opening, not from a map.
- Header and post fixings carry more here than in a courtyard.
- Some structures need attention before screens are viable.