Timber framing is the method of creating framed structures of heavy timber joined together with various joints, but most commonly originally via lap jointing, and then later pegged mortise and tenon joints. Lengthening scarf joints. Diagonal bracing is used to prevent "racking", or movement of structural vertical beams or posts.[2] Originally, German (and other) master carpenter would peg the joints with allowance of approximately an inch, enough room for the wood to move as it seasoned, then cut the pegs and drive the beam home fully into its socket. To cope with variable sizes and shapes of hewn (via adze or axe) and sawn timbers, two main carpentry methods were employed: scribe carpentry and square rule carpentry. Scribing was used throughout Europe, especially from the 12th century to the 19th century and subsequently imported to North America where it was common into the early 19th century. In a scribe frame, timber sockets are fashioned or "tailor-made" to fit its corresponding timber; thus each timber piece must be numbered (or "scribed"). Square-rule carpentry was developed in New England in the 18th century. It used housed joints in main timbers to allow for interchangeable braces and girts. Today, standardised timber sizing mean that timber framing can be treated incorporated into mass-production methods as per the joinery industry, especially where timber is cut by precision CNC machinery. Mortise-and-tenon joints are among the strongest joints in woodworking <b>...</b>
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