The story of an unusual pond or how I made a pit for frogs Part 2

Just like not all yoghurts are equally useful, not every area is suitable for creating a pond. In the first part, we told how a participant FORUMHOUSE under the nickname domsvoimumom, he dug a pit under a pond on the site, but water did not accumulate in it. At the first stage, it turned out to be an excellent reservoir for frogs. But our hero did not give up and continues to work on the arrangement of the pond. What does he get - read on.

Where can I get water?

While the frogs were looking for a way from the hole to the ground, I started looking for water. It was possible to take water from the well and fill the hole with it in 10–20 runs, or wait until nature itself fills the hole with torrential rains and snow. Alternatively, it was possible to dig a hole even deeper, in the hope of seeing a fountain of water, or even oil.

But the excavator left, and the walls of the pit began to collapse little by little. It was impossible to hesitate. It became clear that the pond was not going to be filled with groundwater, and I had to build an artificial reservoir.

Not a pond, so a pool

On the Internet, I dug up several options for the device of artificial reservoirs. I really didn't want to pour a concrete bowl under the pond - there was a lot of dirt. And it was too lazy to knead more than ten cubes of concrete by hand, and you couldn't get to the pond with mixers.

I settled on the original version of PVC film with a log palisade along the sides. Larch bribed me in this project. I love this tree for its color, density, needle leaves and vitality. The example of Venice played an important role in her favor.

Venice experience

For those who don't know, Venice is built on Permian larch and oak. It stands and almost does not sink for fifteen hundred years. The construction took several centuries. In the bottom, to a depth of about 8 meters, was planted, according to various sources, from 0.4 to 1 million trunks of this miracle tree. The driven logs were tied with a frame from above. This frame on stilts is the foundation of the buildings of Venice and the basis of the landscape between them.

The underwater part of the Venetian piles was explored almost a thousand years later. It turned out that under the influence of the local sea mud and water, the tree gained the strength of a stone. Neither an ax nor a saw takes it. Several years later, I regretted not having checked it personally before the construction began.

From words to deeds

I read reviews about larch ponds, found 3 companies on the Internet with a normal website and cases. He studied the technology of making a bowl from larch trunks. The simplified work plan looked like this:

1. Pit.

1. Trench.
2. Geotextile 1.
3. PVC film.
4. Geotextile 2.
5. A palisade of logs along the sides.
6. Stretch system.
7. Filling with water.
8. Improvement.

Of the three companies, only two came to inspect the site. The first ones offered me to redo the foundation pit and broke the space price tag. The second contractor honestly said what the Tajiks would do under his supervision, agreed to my terms and threw a couple of sensible proposals. We signed a half-empty contract with him.

I made an advance payment for the material and let the workers into the bunk. Out of 5 people, only one spoke Russian - Mukhyr, aka Misha.

A start

While larch was being sawed somewhere, the Tajiks began to dig a technological ditch under the logs. That is, a trench was dug at the bottom, along the contour of the pit 30 cm deeper than the bottom and about 30 cm wide. In this trench, one to one, the logs had to stand up as a wall, forming the sides of the bowl of the reservoir. In terms of density, larch is inferior to 1 unit only to oak, so a freshly sawn log sinks in water. And the logs fastened together into the wall will definitely not float. The trench was needed to prevent the logs from playing inside the bowl under the action of the mass of soil that they support.

In the finished pit with a trench, according to the technology, it was first necessary to lay geotextiles to protect the PVC film from tree roots from below and from the sides. Geotextiles do an excellent job with this. The strips were cut with a large margin in length in order to cover the ground adjacent to the sides of the pond in one fell swoop. After cutting, the bottom of the pit was lined with textiles with overlapping strips in half the width. The strips were not fastened together. Mukhyr assured that they will not go anywhere under the pressure of water. I took my word for it.

To be continued!

What would you do with an unprofitable foundation pit, start investing or bury it? Write in the comments!

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