| 摘要 |
PROBLEM TO BE SOLVED: To provide a building external structure that can be securely extended even when an obstacle such as a shutter box and a sun shade is present at a building body, can have a ventilation window installed in a side face wall part, and can increase the opening/closing angle of the ventilation window by employing an inward-opening window.SOLUTION: At least one side face wall part 3 includes a gable beam 15 which has one end connected to a gable column 6 of a front wall part 1 and the other end connected to a gable column 6 of the side face wall part 3 on the side of an external wall T1 of a building body T, and also includes a ventilation window 35 which can be opened and closed in a substantially triangular frame part 33 enclosed with the gable beam 15, a gable rafter 11 of a roof part 2, and the gable column 6 of the side face wall part 3. Further, a first stringer 31 is arranged at a frame part 21 at a predetermined interval with the gable column 6 of the side face wall part 3, and the ventilation window 35 is provided in the frame part 33 enclosed with the gable beam 15, the gable rafter 11, and the first stringer 31. |
