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Post-and-Beam Systems
Post-and-beam (or column-and-beam) construction is one of humanity's oldest structural systems. Vertical posts carry loads to the ground while horizontal beams span between them. This system creates open, flexible floor plans because interior walls are non-structural partitions. Traditional timber post-and-beam construction uses mortise-and-tenon joinery; modern versions use steel columns with wide-flange beams bolted or welded together. The key advantage is spatial freedom, but connections must be carefully designed to prevent beam rotation at the joints.