| 摘要 |
Along the L-beam (2) vertical arm (3) inner surface (3a) an insulating layer (5) is fixed covering the complete surface, and a support (6) the height of which is equal approx. to half of the vertical arm height rests firmly on the horizontal arm (4) inner surface (4a). On the upper inner part of the support is a recess for a retainer beam (7) with an interval of pref. 50-150 cms parallel with the insulation. - A joist (8) rests on the retainer beam and the support upper surface. |
