Construction beams are horizontal, weight-bearing supports that bridge an area. Along with posts and columns, which are the beams’ vertical counterparts, they support the structural integrity of all sorts of buildings. In homes, you’ll find beams in walls, floors, ceilings, roofs, decks and garages. If you’re planning to do your own home renovations, consult a structural engineer about what kind of beams to use. But whether you end up installing a new kitchen on your own or hiring a professional, familiarizing yourself with beam basics will help you get a handle on your project.