| 摘要 |
<p>The system is used, esp. in residential, buildings, provision is made for mounting empty pipes in or on them, so that service leads and ducts can be brought in from outside. The pipe sections (12-16) are fixed in position, in settings relative to each other, in a prefab retaining device, and can then be built into the building with this, as a single entity. The prefabricated retaining device may be a deformable, esp. cast, hard set retaining block, with the pipe sections embedded in it; or a frame made from metal or plastics profiles, with the sections fixed in them. Work on site is considerably reduced and simolified, and exact positioning can be attained.</p> |
