An extended span timber structural member formed from elongate timber rounds (300, 302, 304, 306, 308) that have an end face at each end, said member comprising: a first timber level formed from one or more timber rounds (310, 312) having a first cooperating surface extending longitudinally along the length thereof, a second timber level formed from one or more timber rounds having a second and a third cooperating surfaces extending longitudinally along the length thereof, and a third timber round level formed from one or more timber rounds a fourth cooperating surface extending longitudinally along the length thereof wherein, the first cooperating surface is shaped to cooperate with the second cooperating surface, and the third cooperating surface is shaped to cooperate with the fourth cooperating surface, the first, second and third timber levels (300, 302, 304) are secured together to form a structurally integral unit in which the first cooperating surface is in contact with the second cooperating surface, and the third cooperating surface is in contact with the fourth cooperating surface, and the first, second and third timber levels are substantially parallel to each other, and wherein the first, second and third timber levels (300, 302, 304) are secured to each other by a plurality of fasteners (324, 326) spaced along the length of the member, the plurality of fasteners comprising fasteners provided at both acute and obtuse angles from a longitudinal axis of the structural member, the fasteners extending through the first, second and third timber levels (300, 302, 304); characterised in that the extended span timber structural member comprises a connecting member, and a continuous recess formed across two abutting timber rounds in the same timber level, wherein the connecting member is seated in the recess thereby straddling the abutting end faces of the two timber rounds, and wherein the recess extends into a non-end face of an underlying or overlying timber round such that the connecting member laminates three timber rounds together, the three timber rounds being the two abutting timber rounds and the cooperating surface of the overlying or underlying timber round. a first timber level formed from one or more timber rounds (310, 312) having a first cooperating surface extending longitudinally along the length thereof, a second timber level formed from one or more timber rounds having a second and a third cooperating surfaces extending longitudinally along the length thereof, and a third timber round level formed from one or more timber rounds a fourth cooperating surface extending longitudinally along the length thereof wherein, the first cooperating surface is shaped to cooperate with the second cooperating surface, and the third cooperating surface is shaped to cooperate with the fourth cooperating surface, the first, second and third timber levels (300, 302, 304) are secured together to form a structurally integral unit in which the first cooperating surface is in contact with the second cooperating surface, and the third cooperating surface is in contact with the fourth cooperating surface, and the first, second and third timber levels are substantially parallel to each other, and wherein the first, second and third timber levels (300, 302, 304) are secured to each other by a plurality of fasteners (324, 326) spaced along the length of the member, the plurality of fasteners comprising fasteners provided at both acute and obtuse angles from a longitudinal axis of the structural member, the fasteners extending through the first, second and third timber levels (300, 302, 304); characterised in that the extended span timber structural member comprises a connecting member, and a continuous recess formed across two abutting timber rounds in the same timber level, wherein the connecting member is seated in the recess thereby straddling the abutting end faces of the two timber rounds, and wherein the recess extends into a non-end face of an underlying or overlying timber round such that the connecting member laminates three timber rounds together, the three timber rounds being the two abutting timber rounds and the cooperating surface of the overlying or underlying timber round.