| 摘要 |
PROBLEM TO BE SOLVED: To provide a washer with a group material injection hole, with which an overall filling space of a bottom face of a base plate can be filled with a grout material in a short time without enlarging a height of a grout material supply path upwards in a perpendicular direction.SOLUTION: A washer 1 is provided between a base plate 3 fixed to a lower end of a steel frame pole 2 and fastening nuts 4a, 4b and comprises a grout material injection hole 11 and a bolt hole. At a bottom face side of the washer, a grout material supply path 15 is provided between the grout material injection hole 11 and the bolt hole. An upper portion of an inner surface of the grout material supply path 15 is inclined toward a direction of the base plate 3 as approaching the bolt hole from the grout material injection hole 11. |
