I'm planning to build a 10x16' cabin. I need help sizing beams and spacing piers for the foundation. As of now I am planning to use two 4x6 16' beams with three ez tube precast footings per beam. This would leave 8' between piers. I am planning to use 2x6 10 foot floor joists. It seems maybe slightly under built.
I'm trying to strike a balance between cost and simplicity because I haven't done this before. Adding two more footings and digging two more holes isn't ideal from a time or cost perspective. Do I upsize the beam? Or do I need four footings per side regardless.