For the carport in the front of the house we used locust post as our support. The client wanted the front of the house to reflect the fact that it's build in the mountains. Locust is a tree with a dense wood grain and is one of the most weather resistant woods to use in it's natural state in our area. Most of the time, clients like to see the bark on the wood when used outside but unless the locust tree is cut when the sap is down, which means colder weather, the bark is likely to fall off the tree after a year or so.
Attic trusses were used to frame the roof of the carport. An attic truss is built with a larger bottom cord to allow for the additional weight of items being stored or someone walking on the floor. The area in the middle of an attic truss is left open for storage. This type of truss is more expensive than a standard truss with no center opening or beefed up bottom cord.