| 摘要 |
<p>The invention relates to open flooring comprising a plurality of longitudinal bars (10) connected together by transverse bars (11) each of which extends across a number of the longitudinal bars. In the gaps between adjacent longitudinal bars there are provided rectilinear intermediate elements (12) which have a smaller cross section than do the longitudinal bars. The upper edges of the transverse bars lie in the same plane as the upper-edges of the longitudinal bars. The intermediate elements are secured beneath the transverse bars. In manufacture of the flooring the longitudinal bars and intermediate elements are supported in the required relative positions and the transverse bars are then secured by forge welding. </p> |
