Septic tank is being built in those areas where there is no built city sewage system. It serves for the storage of wastewater and thus prevents the spread of unpleasant smells and infections. www.mcseptics.ca is a place that has all the answers when it comes to building a septic tank. If you are in need of real professionals, you are at the right place.
The construction itself is simple. It is a concreted, underground room divided into two interconnected chambers. The larger part is two thirds of the volume, while the smaller occupies a third of the total volume. The larger part is usually carried out under the slope (from the entrance to the pit), since sedimentation is the largest, precisely at the entrance to the septic tank. From a smaller part usually filters or water flows into an absorbent well.
The size of the septic tank can be calculated in relation to household water consumption. It can be found that a household member averages about 150 liters of water per day, which means that one member will charge 4.5 cubic meters in a month. Of course, this is provided that there is no absorbent well. In the case of construction, the rule is that the minimum capacity is 3 cubic meters for houses up to 5 rooms, and for each subsequent room, the volume of the pit increases by 1 cubic meter. In some countries there is a legal minimum of 10 cubic meters.
The diameter of the tube entering the septic tank is usually 160 mm. The optimum slope of the pipes toward the septic tank is 1 percent, exceptionally 1.5. That means 1 cm per meter. In order to reduce the flow rate of the fluid the distance of the septic tank from the house is at least 2 m. The connection of the pipes below 90 degrees is avoided. The largest angle in the pipes is 45 degrees. If it is inevitable to set up a pipe below 90 degrees, it is mandatory to place a shaft at that location.
In front of the septic tank, it is not bad to leave a single branched pipe to allow cleaning the septic tank in case of congestion. It should be noted that discharging septic tanks will be less frequent if you use a cleansing agent and maintain septic tanks. These are bioenzymes that break down organic waste to carbon dioxide and water. It is used by occasional bathing in a toilet and that's it. In addition to the less need for discharge, the unpleasant sewage smells are visibly reduced.
As for the construction itself, it begins by excavating a hole of eighty centimeters larger than the planned septic tank and laying the so-called "lean" concrete to the bottom of the future septic tank.
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