The working process is the same either by executing for yourself or asking a company for the work. Refer to the following instruction on each process.

The size of the hole, the depth and working procedure may change by the situation of the site.

Specification of Fresh Concrete

Strength・・・・・Using 18 (Newton) and up
Slump・・・・・・・・・・12cm (15cm is also acceptable)
Size of Aggregate・・・・・・・・20mm
Type of Cement・・・・・・N

Mark △ on the ground with color spray. Then check if both the direction and the place are all right.

You can equip the winch on anywhere of one of three faces on the tower.
Since the above is related to wiring of power cable of single phase 200V and/or control, you need to decide the direction of installation of the winch face and the stage steps in advance.


2.　Decide whether you carry the dug out ground outside or level the ground in your garden. In case the size of the dug hole is 2m x 2m x 2m and you dig it, the volume of the ground will be 1 1/2 times of the hole size. When you dig 8m3 of the ground, the volume will be about 12m3 by multiplying 1 1/2 fold２．
　　
3.Prepar the necessary tools

If you work for yourself, note that you need various tools such as excavator, dump for disposing the remaining ground, level, scoop, chair, scale and so on.

In addition, contact a company of fresh concrete in advance.

After burying the ground, execute a rolling compaction firmly.
If the rolling compaction is not done firmly, it may cause the foundation to incline.

Pour fresh concrete slowly.