- 100 cm along the pipe walls made small holes
with a diameter of 5 mm.
- Pipe planted at a depth of 150 cm, and the remaining 30 cm
above the soil surface.
- Ruler (from light wood / bamboo) measuring 200 cm with
wooden base are given corks (in order to float). Ruler
is made scale that starts from the border end of the pipe
is not embedded (zero).
- Ruler included in the pipe and covered with a
lid that has a hole in the middle so that the bar
can be moved up and down.
- The water level can be directly known ground surface
in accordance with numbers that are parallel to the surface of the
PVC that is not embedded.
- Observations were made once a week (4 times a month).
If the water level in the block down> 70 cm door
immediately closed the dam.
- For one block (30 ha) required 2 units Pieziometer:
• 1 unit is located 250m from the main road south of the
• 1 unit again is 250m from the main road next to
the North
- To facilitate the observation and examination,
suggested Pieziometer placed in the way of control with
distance as above, and made the sign of the field guide
(Figure 3) .
翻訳されて、しばらくお待ちください..
