| 摘要 |
PURPOSE:To prevent a post from tilting and expedite a work, by driving a larger diameter pile than a post by a piling machine provided with an air hammer on erecting a relatively small dia. post and inserting the post after the pile has been pulled out. CONSTITUTION:When a post like a fence, a traffic sign, an information board, etc., is erected, a larger diameter pile 2 than the diameter of post is driven by a piling machine equipped with an air hammer 8. Then a hole B is formed after the pile has been palled out and aggregates C are fed into the hole B to adjust the hole depth. And then the post 1 is inserted and mortar is charged and fixed. The soil of the peripheral wall of the hole is compacted firm by use of a small type piling machine. In this way, the post 1 is prevented from tilting and an efficient work can be performed. |
