#4981 Portable Foundations for Small Buildings
#4981 Portable Foundations for Small Buildings #4981 Describe a portable foundation for small buildings (e.g. 8x10 to 12x20) A portable foundation supports a small building without locking it permanently into the ground. For structures ranging from 8x10 to 12x20 , these systems fall into three main designs depending on whether you want the building itself to be movable or just the foundation parts to be removable. 1. Pressure-Treated Skid Foundation (For Movable Buildings) A skid foundation uses long, heavy-duty timbers—typically 4x6 or 6x6 pressure-treated lumber —that run the full length of the building's floor frame. How it works: The floor joists sit directly on top of two to four parallel skids (an 8x10 usually uses two skids, while a 12x20 requires three or four). The ends of the skids are often angled upward like sled runners so a shed mule or rollback truck can drag or winch the entire building onto a trailer. Best site prep: Skids rest best on a compacted bed ...