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Proper "composite action" depends on high-strength bolts (Grade 8.8 or better) spaced at regular intervals, typically on center, often in a staggered pattern.
Steel plates are typically A36 structural steel, ranging from buy flitch beam
A flitch beam (or "flitched beam") is a high-strength composite structural member made by sandwiching a steel plate between two or more timber beams and securing them with bolts. This design leverages the stiffness of steel and the versatility of wood, making it a staple for home renovations where structural depth is restricted. Key Benefits for Purchasing Key Benefits for Purchasing Supporting new floors or
Supporting new floors or roof structures in low-clearance attic spaces. Often, the timber bears on the posts while
lumber) to ensure the steel doesn't interfere with finishes if the wood has a natural crown.
At the support points, the load must be properly transferred. Often, the timber bears on the posts while the steel is bolted through the timber; these end connections must be engineered to prevent the wood from crushing. Common Applications
When ordering or fabricating a flitch beam, ensure these technical details are met: