PROBLEM TO BE SOLVED: To provide a house which has a roof whose center-top part is opened toward the sky, so that strength of the house roof, expansion of a ventilation and natural lighting degree and working efficiency are improved. SOLUTION: The top part of the house roof is divided and opened into right and left, inside of which a V-shaped recessed portion is formed along the length while lateral faces on both sides are composed for purpose of increasing a ventilatory function and a lighting efficiency. Furthermore, as for its strength, it is characterized that a trough-girder member, a joist member and both ridge members are connected and fixed in an inverted-triangle relation. COPYRIGHT: (C)2005,JPO&NCIPI
