| 摘要 |
<p>Two parallel panels, interconnected by space-retainers, have an outside surface able to bear rendering and/or wallpapering, and a filling, of concrete or other materials, between them, in a wall element prefabricated for use in buildings. The space-retainers (4) are made in a ladder pattern. They are made up from two posts (5,6) at constant interval, connectable to the inside faces of the two panels (2,3). They are interconnected by likewise spaced rung-bars (7), determining their distance apart. These may be at right angles to them, or inclined. Manufacture of wall elements and spacers is simplified and spacers are evenly distributed.</p> |
