| 摘要 |
The present invention provides an underground collecting well structure for a building which has a dual collecting well body unit, reduces an installation error in an installation space, and prevents damage to a collecting well by an error during an installation process. The underground collecting well structure for a building comprises: an outer collecting well body unit inserted and installed in an installation space of a bottom concrete area in which a reinforcing bar is installed and formed in a first internal space, wherein an upper portion thereof is opened; an inner collecting well body unit inserted and installed in the first internal space, in which a second internal space is formed; and a plurality of fixing units installed on the circumference of the outer collecting well body unit to be horizontally moved to the outside of the outer collecting well body unit and the first internal space, and mounted on an end of the reinforcing bar. |
