Reliability and durability of the septic tank RC rings

User portal device shares the experience of suburban sewage from reinforced concrete rings with a field of filtration

Perhaps, FORUMHOUSE there are hundreds of versions of the septic tanks. From monolithic concrete, and collected from the well rings, to treatment facilities of cubic containers. We offer you another construction of a septic tank for a low level of groundwater, with the field of filtrationWho made dvs5.

Content:

Calculation of the septic tank of concrete rings
Stages of installation of a septic tank w / w rings
field filtering device
Estimates for the septic tank

How to calculate the volume of the septic tank

dvs5

Member FORUMHOUSE

I have a house in the village. I decided to make a treatment plant. Long studied the issue. I was looking for information on the Internet and read articles on this subject. The construction of a septic tank calculated by the following algorithm:

The house in the fall and spring, arrivals on weekends, live 1-3 people.
In the summer of 4-5 people live constantly + guests arrive.
Briefly, there are about ten or twelve people.

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So I decided to do the treatment plant with a margin for growth and if the family is an addition. Averaged, calculated septic tank volume if it is used by 8 people. It has turned out: 8h3h200 liters 4800 = l. Rounded up to 5 cubes.

Cubic capacity of a septic tank users calculated as follows: day 1 person consumes 200 liters of water, and the total volume of the septic tank is calculated taking into account the three-time inventory, for example, in case of salvo drain. Total - 600 liters per person.

According to dvs5,the cost of finished septic tanks, he desired volume, It did not fit into the planned budget. So he decided to make their own septic tank made of concrete rings, because groundwater level low - 6 m.

It is not recommended to install the treatment plant of the w / w rings with a high groundwater level, since through leaky joints, septic quickly flood the ground water.

Construction of septic tank users broke into sequential steps:

At a depth of 0.6 m in conclusion it laid septic home - "ginger" sewer pipe of 110 mm diameter.
tube top dvs5 insulated extrusion polystyrene foam thickness of 5 cm.
Place in the septic tank dvs5 chosen at a distance of 15 m from the house and 25 m from the well water.
To calculate the area of the field of filtration dvs5 I did a test on ground water absorption.

For this, he dug a hole.

After the layer of soil and vegetation went loam. At a depth of 1400 mm I went to the sand. User blabbed sampling bank with water. The sand was slightly clay. Deepening the hole up to 1500 mm, dvs5 water poured into it.

After absorption tests on soil turned 150 liters per day per 1 sq. m or 0.15 m³ / day. Silty sand, clay. The calculated allowable load - 35-55 liters / day per 1 sq. m To calculate the coefficients used.:

15% + - 2 meters from the lower-level fields to filter groundwater level;
+ 15% - seasonal accommodation.

The user took an average value of water absorption: 45 + 30% (stock) = 58 liters / day per 1 sq. m. Next, 1600 L / day divided by 58 = 27.6 sq. m.

Figure has turned out to filter wells (coefficient. 1), but how many wells need for this area? dvs5 It went like this:

For pipes - ratio of 0.5 (average user took): 27.6 / 0.5 = 55 sq. m.
For tunnels - ratio 1.5: 27.6 / 1.5 = 18.4 sq. m.

dvs5

I chose the tunnels on the basis of price and area. I bought the most inexpensive. A total of 8 items. After the tunnels put auditing well. Concrete collars took pazogrebnevye. 2 pcs. with the bottom. Two through. Two and a lid with adjusting manholes. septic scheme below.

field filtering scheme.

Stages of installation of a septic tank of concrete rings

The works were divided into stages:

Buying accessories for septic tank - plastic sewer pipes, Epps, covers for manholes.

From home septic tank to the excavator dug trench length of 14 m, depth, with smooth decreasing gradient from 80 to 120 cm.

Then excavator dug a pit for the septic tank of concrete rings size 4000h2000h3200 mm.

Soil taken from the site and delivered 10 cubic meters of sand backfill.

The base member slipped pit sand 20 cm thick. He sheds water and rammed.

Similarly prepared trench.

Manipulator installed ring.

Joints missed butyl rubber sealant.

Castles do not give rings to shift relative to each other.

Rings installed on the adjusting "washers".

Mounted cones hatches.

The next day the trench was laid pipe, and in the rings hammer drilled holes conclusions.

Draining from the house to the septic tank have warmed Epps.

The apparatus of pipes in the first well.

Right from the entrance to the house, on top of the entrance of the bath, left overflow.

Bottom - overfilling, pipe diameter 16 cm. top - trumpet, 11 cm in diameter,for mandatory ventilation between the chamber septic tankand the entire sewer system.

The air picks up "fungus", mounted on a filter box, then it passes through a septic tank chamber and discharged through the sewer pipe to the house roof.

The second well - overflow and outlet in the filter box.

Backfilling septic tank.

field filtering device for septic tanks of concrete rings

First excavator dug pit size 8000h2500h1600 mm.

Bottom razravnyali, sustained slope of 1 cm by 1 linear m. Walls unrolled geotextile to separate from the gravel layer of soil.

At the bottom of the pit 10 rubble poured cubes layer 150 mm thick, and placed on it tunnels.

Holes drilled by pipe crown wood 127 mm in diameter.

Stages filtering device field.

At the finish of works rubble closed geotextile and covered with soil pit.

The final version of septic w / w rings filtration field.

At work, with the assistance of helpers gone a month. The work was done on the weekend.

The estimates for "national" septic tank of concrete rings

Costs:

Concrete collars, together with delivery, - 33500 rub .;
Tunnels - 30000 rub .;
Excavator For Rent - 8500 rubles .;
Manipulator - 8000 rubles .;
Removal of soil - 11000 rub .;
Sand - 17500 rub .;
Crushed granite, fraction 5-20, 10 cubes - 18500 rub .;
Remuneration of hired workers - 18500 rub .;
Consumables - 6700 rubles .;
Well, manholes, tees, taps - 6400 rubles .;
Extruded polystyrene and geotextile - 5700 rubles .;
Sealant - 2800 rubles .;
Additional rings and DSP - 900 rubles.

Total: 168 thousand. rub.

conclusions

Many will say that pay almost 170 thousand. rub. for the septic tank of concrete rings - too expensive. The price should be considered comprehensively. If the greedy and save, the treatment plant will have to remodel soon.

Believe me, messing with the reworking of already commissioned a septic tank you absolutely do not want.

Therefore, it is advisable to do a septic tank once correctly and permanently.

Get information about other options right septic recommend theme As we are doing a septic tank of concrete rings.

Different variants of septic tanks in the articles:

In a high groundwater table? build septic surface cubic containers made of plastic with his own hands.
Do you want to make a homemade septic tank of reinforced concrete rings? here Detailed instructions on the construction of a homemade septic tank based on w / w rings.
Think how you can save with the device at the site of the treatment plant? The idea of a cheap "eternal" septic tank of concrete rings.

How you implement your local sewage network (VOCs)?

Other modifications of septic tanks, including for the high groundwater level, as well as articles and videos on any construction theme - on FORUMHOUE. We are waiting for you at the popular and prestigious area of the building and country life!