What size beam do you need to span 24 ft and garage roof?

To determine the appropriate beam size for spanning a 24-foot garage roof, several factors need to be considered, including the type of materials used (wood, steel, etc.), the load requirements (live load and dead load), and local building codes. For a typical wooden beam, a glulam or LVL beam might be sized around 3x10 or 3x12, depending on the specific load conditions. It's always best to consult with a structural engineer or refer to local building codes for precise calculations and recommendations.