The wind speed write-up in Wind Loading of Structures by Holmes says coastal areas are similar to other Mediterranean locations, citing 50-year MRI of 38 m/s gust from the US DoD (probably the Unified Facilities Criteria) for Alexandria. He says the interior can be significantly lower.
If the project is important or expensive enough (to save money if a lower wind speed is justified) it might pay to do a site wind study with a wind engineering consultant.
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Yarrow Fewless Aff.M.ASCE
Principal
CPP Inc
Fort Collins CO
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