| 摘要 |
The invention provides a chimney structure comprising a base member of fireproof material and a hollow metallic core resting on said base member enclosed in an outer shell which is spaced from the latter. The core comprises a stacked series of individual hollow stainless steel sections joined together to define a vertical flue of the required length extending upwardly from the base member having at least one opening at a desired height above the base suitable for use as a clean-out and/or appliance connection. The shell is a vertical enclosure surrounding and spaced from the core and comprises vertically stacked box-like units assembled from four calcium silicate panels each and holding blocks separating the units from each other vertically, the lowermost unit resting on the base member. Each holding block is provided with a radially inwardly extending flange engaging the core and holding it centered within the enclosure and an outwardly extending flange for receiving and seating the top and bottom edges of successive box-like units respectively. Lateral spacing blocks of calcium silicate space the exterior surfaces of the assembled panel units from any flammable materials surrounding the chimney structure. The invention includes a kit of the necessary parts and the method of raising the structure. |
