Effective Utilization of Pine Wood for the Manufacturing of High Valued Product(I) -Bending Strength Properties of Laminated lumber Produced from Small Lumber of Pinus densiflora-

소나무재의 효율적 이용을 위한 고부가 가치화 방안(I) -소나무 소경재를 이용한 적층재의 휨 강도 특성-

  • 홍순일 (강원대학교 산림과학대학 임산공학과) ;
  • 김남훈 (강원대학교 산림과학대학 임산공학과)
  • Published : 1999.09.01

Abstract

This study was carried out to investigate the strength and techanical feasibility of laminated lumber from small-diametered Pinus densiflora. Small lumber is currently not used for structural laminated lumber sonstruction, but its properties may of elasticity(MOE). Twenty specimens were compared for each beam from laminae. The results showed that actual beam MOE values exceeded slightly the preducted values. Based on the evaluation and analysis of thirty six Pinus densiflora laminated beams, a bending strength of 673 kgf/$cm^{2}$, and MOE of 98,200 kgf/$cm^{2}$ were obtained. It was suggested that this small lumber may be a candidate for structural laminated beam construction to provide the proper combinations of laminae.