On Thu, 22 Aug 2013 06:03:01 -0700 (PDT), Andy
wrote:

I am working on 2 bids for a customer who would prefer a wood as opposed to a metal cover for the porch.

Check

It would be added on to the house.

Check

He is concerned about the strength issue because of living in a hurricane prone area. (20 miles from Galveston, Texas)

He can follow the local hurricane building codes, double that, and
hope for the best.

I am interested in your thoughts on construction technique especially if he goes with a metal roof.

Have good insurance or savings and replace it after the storm?

Point is, check the local codes for a better answer...