| 摘要 |
<p>The invention concerns a prefabricated building element (1, 20, 30, 40, 60, 80, 90) characterized in that it a wooden structural element (5, 32, 42, 62) parallel to the mounting axis, suitable for creating some ducts (8, 33, 43, 63) for ventilating a building, connected each other starting from the ground floor up to the roof ridge. The invention also concerns a system for the construction of buildings, characterized in that it uses at least one type of these prefabricated building elements.</p> |
