| 摘要 |
PROBLEM TO BE SOLVED: To provide a roof panel which allows the number and variety of components for use to be reduced.SOLUTION: A roof panel YP comprises a pair of rafter receiving beams 21 and 22 which are disposed in parallel at the positions of two opposing sides of the quadrangular roof panel YP in a plan view, a plurality of rafters 23 which are bridged between the rafter receiving beams 21 and 22 in an orthogonal direction to the both rafter receiving beams, and a roof board panel NP which is supported by the rafters 23 to form a roof surface tilted along a drainage slope. The both ends of the rafter 23 in longitudinal direction are fixed directly to the rafter receiving beams 21 and 22, such that the area adjacent to the upstream drainage slope is fixed at a higher position than the area adjacent to the downstream drainage slope relative to the rafter receiving beams 21 and 22. By means of the difference in height between the ends of the rafter 23, the roof board panel NP is tilted along the drainage slope. |
