Manhole for toilet, has frame made of two separate parts interlocked with each other such that one part is constituted by lower support and another part is constituted by upper flange of hollow column

摘要

The manhole (1) has a frame (2) and a lid (3) coupled to the frame, where the cover is removable to allow access to the manhole. The frame includes a hollow column (4) with a lower support (5) installable under a coating, and an upper flange (6) for receiving the lid. The frame is made of two separate parts interlocked with each other such that one part is constituted by the lower support and another part is constituted by the upper flange of the column. The lower support of the frame includes a fitting unit (7) adjustable to provide a form fit with a lower part of the column.