The present invention is a cuttings generated during drilling of the main pipe during the installation process before the birds fountain is flowing into the main pipe to the birds fountain former and construction methods before the birds fountains that can prevent contaminating the water supply inside the main tube It relates.
The present invention relates to the body in the saddle portion and a band portion which interlock to surround the main pipe to move water is supplied, and the installation on the saddle unit features a hollow perforated vertically able to puncture a water hole in the main pipe, the It provided on one side of the body and extending vertically above in the branch hole is hollow and communicates with the birds fountain including a branch before having, in the hollow inner circumferential surface of said body to facilitate discharge of the chips occurring in the boring process of the main tube the discharge groove is formed. Birds fraction before construction method according to the present invention it has been and fractions around the fastening step through to surround the main tube which is supplied the number of feed parts fastening the saddle portion and a band portion provided on the main tube, wherein is coupled to a saddle portion through a vertical hollow and the body having, and install the drain water supply pipe can be supplied to the drain water into the interior of the body to the branching portion to the head portion including a branch having a branch hole being in communication with the hollow in one side of the main body, for supplying the drain water and the drain water supply pipe installation and the supply step, a water supply hole punched step by the inserting the drill into the interior of the body through the hollow drilling a water supply hole in the main pipe, after the water supply hole punched perforation for closing the hollow upper end of the body and a hole closure step.