| 摘要 |
<p>PROBLEM TO BE SOLVED: To inexpensively prevent the damage of a branch part and a branch pipe at the time of an earthquake. SOLUTION: A pipe line branch part protecting box 10 having a pair of the first opposed side walls 20, a pair of the second opposed side walls 22 for connecting the first side walls 2, and a roof 26 for connecting the upper ends of the first side wall 20 and of the second side wall 22 is arranged so as to cover a snap tap 14 being a branch part between a water distributing pipe 12, namely a main pipe, and a water supply pipe 16, namely the branch pipe of the main pipe. The protecting box 10 is connected to the snap tap 14 from an opening 24 formed on one side of the second side wall 22 through the water supply pipe 16. Even in the case where the water distributing pipe 12 is moved in the direction of a pipe axis by the displacement of the ground due to an earthquake, since the snap tap 14 protrusively provided on the water distributing pipe 12 moves inside the hollow protecting box 10, load caused by soil does not act on the periphery of the snap tap 14.</p> |
