This floating beam is so wrong! There’s no sense installing a beam that’s not supported by a post. But that’s what this deck builder did. Maybe the builder assumed that attaching the beam to the end of another beam would do the trick.
The Right Way
Splices in beams should be supported by a post or structural column of some sort. The post or column should rest on a foot-ing that meets local building code requirements. And the beams should be connected to the post with an approved metal connector. Beams should be supported by at least 1 in. of solid wood over posts. Plus: Learn how to make structural repairs by sistering floor joists.