| 摘要 |
<p>Tubular upright and horizontal connecting profile girders with end lengthways grooves engaged by the bent edge of clamping profile girders, serve to frame wall panels. There are intervening devices to absorb lengthways thrust forces. The system is used in a building which can be dismantled as in patent 2642221. The connecting girders serving as roof purlins have laterally cantilevered mounting surfaces for the adjacent roof panels clamped to them by connecting members. The cantilevered faces are pref. adapted to the roof slope on both sides. A downstand beam chord may be formed on the bottom of the purling. Roof construction is simplified.</p> |
