| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a basic structure of a roof truss capable of promoting rationalization and standardization of plant production and site work by increasing plant production not requiring a high grade skill instead of decreasing site work by a craftman requiring the high grade skill even in the case of forming a frame of a gradient roof with a hip such as a hip roof and a square. SOLUTION: Basic structure of a roof truss is to combine a beam framework (beam panel 2) a side surface shape of which is roughly an isosceles triangle and cantilever beam frameworks a side surface shape of which is roughly a right angled triangle (A type panel 3, B type panel 4, C type panel 5) with their hypotenuses upward or to combine them and a rectangular framework (rectangular panel 6) a side surface shape of which is rectangular. In this case, a roof gradient is formed by the hypotenuses of the beam framework (beam panel 2) and the cantilever beam frameworks (A type panel 3, B type panel 4, C type panel 5), and bottom sides of the beam framework (beam panel 2) and the cantilever beam frameworks (A type panel 3, B type panel 4, C type panel 5) are positioned on the same flat surface.</p> |
