Orientation of bars glued on glued laminated products: Parallel vs. perpendicular

This paper presents the results of a comprehensive experimental study of joints made with threaded steel bars glued with epoxy in both parallel and perpendicular directions to the timber fibres. Two types of wooden products, namely, glulam and laminated veneer lumber (LVL), were used due to their widespread use in notable timber engineering designs. Experimental results showed that the behaviour of glued joints with bars parallel and perpendicular to the timber fibres differed, depending on the slenderness of the joint. It was also observed that specimens made with LVL had lower strength than those made with glulam, regardless of whether the anchors were parallel or perpendicular to the fibres.