![](images/content_back_L.gif) |
|
|
how to use > DESIGN FOR CONCRETE > PIER, BRIDGE FOUNDATION |
Drilling depends on the shape and circumstance of the structure.
![](/editor/UploadFile/2008814113112965.gif)
(1) The breaking of a large block requires secondary breaking with a large rock breaker |
(2) When breaking a large block into smaller pieces drilling is only required from one side. |
![](/editor/UploadFile/2008814114550586.gif) |
(3) Vertical drilling is more complex when dealing with high walls. |
(4) The breaking of a thick foundation requires secondary breaking with a large rock breaker. |
![](/editor/UploadFile/200881411541454.gif) | |
|
![](images/content_back_R.gif) |