Looking a wood (pine) deck material. It's a simple 8' by 8' deck. There's a support beam holding up this deck. Other end is connected to building. Find the load bearing strength of a support beam -- in lbs, that supports this deck under it. Average usage of deck or persons on it. Anyways, what is the strength of a single 8 foot 2" by 12" beam? Then what is the strength of a single 8 foot 2" by 10" beam?