1. 1) 日本ツーバイフォー建築協会:枠組壁工法建築物設計の手引2007年,日本ツーバイフォー建築協会,2007
2. 2) 住宅金融普及協会:枠組み壁工法フラット35,住宅金融支援機構,2007
3. 3) Johannesson, B.: Design problems for glulam beams with holes, PhD thesis Dep. of Structural Engineering , Chalmers University of Technology, Göteborg, Sweden, 1983
4. 4) Johannesson, B.: Holes in plywood beams and glued laminated timber beams. Stress concentration and crack loads, Publ. S.77:4, Chalmers University of Technology, Göteborg, Sweden, 1983
5. 5) H. Kolb 他: Verstärkung von durchbrochenen Brettschichtbindern, Research Report 14-34810, FMPA, Stuttgart, Germany, 1985.