| 摘要 |
<p>PURPOSE:To manufacture a new shaped roof unit at a low cost by adding a sub-part formed into a tetrahedron to a hip roof type roof unit having at least three roof slopes. CONSTITUTION:On the mutually adjoining end part of respective slopes of an existing hip roof type roof unit A provided with at least three roof slopes, a sub-part B formed into a tetrahedron having one vertical face and two roof slopes is fitted, and hence a new shaped roof unit C is formed.</p> |
