Are there any suggestions for a cheap way to build a carport that is open on all sides, only has a roof.
It needs to be big enough to cover a fifth wheel travel trailer, 45' long, 13' wide, and have an overall height clearance of 14'.
The best answer I can give you is that a carport is a carport. It is less costly than a fully enclosed structure, but at the end of the day there is really only one way to construct it. Depending on the permit requirements and structural requirements in your area, the following main components will be required:
Posts (structure that holds the roof which transfers its load to the piles)
Typically these are attached structures. This would be something where hiring a professional is well worth it.
If you are looking for the "cheapest" solution, I have seen pop up structures (almost like big tents) that will house larger vehicles.
There is no cheap way. If you go cheap, you are putting your rv at risk.
You will require footings for the 6 x 6 posts. Depending on the number of posts (max should be 12 '), you will require the necessary beams to carry the roof supports.
Depending on where you are, you will require a building permit, and they will set the building standards.
Post and beam construction is the only way. Sheeting the roof will shear your structure. You will need an engineer as you will have factored loads as well as unfactored loads. With that said spanning 45 feet is huge and would require a very exspensive engineered beam. or structural steel.
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