| 摘要 |
<p>The flat roof support for the assembly of lightning conductors, consists of a slightly flexible moulded plastic hollow body (1), whose enclosed upper section forms an integral part with a material clamp and whose internal space can be filled with cement mortar. The hollow body is made with a channel (2), with material clamps (3) in widened sections of the channel so that a slit (4) remains between the outer side of the material clamp and the wall of the channel. The hollow body is anchored to the cement mortar by a dowel (5). There is a sideways play in the material clamp between the inner and outer wall of the widened section of the channel, to prevent the material from bending beyond its elastic limit.</p> |
