| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the length of a ligneous rafter by extending a inclined beam beyond the joint thereof with a panel frame member at the time of forming a panel with the rafter laid between panel frame members formed out of a plurality of steel frame members jointed to right and left inclined beams of steel frame. SOLUTION: The extension ends of the inclined beams 43 of roof panels 41A and 41B are jointed to the truss beam 27 of the girder truss 24 of a roof unit 21. Thereafter, the extension ends of the inclined beams 53 of roof panels 42A to 42C are jointed to the truss beam 37 of a girder truss 34. Furthermore, a sheathing roof board nailed to the ligneous rafter 48 of the frame 47 of the panels 41A and 41B is projected to the side of the unit 21. Thereafter, the projected part of the board is fixed to a ligneous rafter 30 with nails. A similar construction process applies to the panels 412A to 42C as well. As a result, the span of ligneous rafters 48 and 58 is reduced for the overall length of the panels 41A, 41B and 42A to 42C. According to this construction, a rafter deflection can be reduced and at the same time, a roof structure can be stabilized and strengthened.</p> |
