How do glued-in rods work in timber connections?

Glued-in rods are threaded steel bars bonded into pre-drilled holes using structural epoxy or polyurethane adhesive. They transfer load through shear in the adhesive bond line, achieving very high capacity in a compact connection.

Glued-in rods are threaded steel bars bonded into pre-drilled holes using structural epoxy or polyurethane adhesive. They transfer load through shear in the adhesive bond line, achieving very high capacity in a compact connection. Typical rod diameters range from M12 to M24, with embedment lengths of 10–20 times the rod diameter. They are particularly effective for moment connections, column bases, and situations where high loads must be transferred without visible metalwork.

Why this matters

This question relates to Timber Connection Design: Steel Plates, Dowels & Modern Fasteners, which covers the broader topic in detail. Understanding this specific aspect helps architects, builders, and timber dealers make informed specification decisions.

For full context and additional technical detail, see our comprehensive guide:

→ Timber Connection Design: Steel Plates, Dowels & Modern Fasteners

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About this answer

This answer is part of the PuurModulair Knowledge Base — comprehensive timber specification guidance for architects, builders, and dealers across the UK, EU, and Scandinavia.