| 摘要 |
PROBLEM TO BE SOLVED: To provide a mating beam and a mating column, easily formable by using general structural wood, arrangeable by being exposed indoors, and capable of also designing a burning margin excellent in efficiency.SOLUTION: A pair of wooden square materials 11 and 21 having a similar rectangular cross section are formed by integrally joining by fastening by a plurality of fastening machine screes 12 and 22 by superposing joint surfaces 11a and 21a. The fastening machine screws 12 and 22 are fastened to hole bottom parts 13a and 23a by being driven in via machine screw driving holes 13 and 23 formed on side surfaces 11b and 21b of one wooden square material 11 and 21. The hole bottom parts 13a and 23a of the machine screw driving holes 13 and 23 are provided in a depth position of not exceeding 1/2 of the length of a short side part of the wooden square materials 11 and 21, deeply by 30 mm or more from side surfaces 11b and 21b on the opposite side of the joint surfaces 11a and 21a. Plugs 14 and 24 are buried in the machine screw driving holes 13 and 23 after the fastening machine screws 12 and 22 are driven in. |
