Rainwater sewerage: option first open( lazy)
- The easiest way to save your site from storm sewage in terms of labor and financial costs. We pay attention, that to the drainage systems of your structure such a rain scheme will not have any relation. If the relief allows, the stormwater can work effectively even on small inclines without special boxes, gutters and other expensive nonsense. Simply we draw gutters into the outlying ditches, and they, in turn, into the nearest ravine or stream.
- The option is, of course, exaggerated, but the principle of operation and the device of rainwater for private households describes completely. According to this scheme, at the initial stage all similar city engineering networks are functioning, calculated according to SNiP 2.04.03-85, which has not been canceled yet. Calculation of the expected volumes of storm water, its contamination and the quality of this document is proposed to be estimated empirically. We assure you that even without the long and monotonous processing of records of self-recording rain gauges, see the rain drain of SNiP p.2.12, you can determine what kind of rain has happened in your lands.
Sewerage closed type: lucky not all
Not lucky in the sense that the site is flat as a pancake, but it pours it constantly( the climate is this).You will have to spend money on a solid pipeline system for draining rainwater. So, first we think about the pipes and how to correctly calculate their diameter. We do not think for long, since for intra-quarter domestic rainwater canalization the size is 150 mm( in the absence of silting).In practice, a polypropylene pipe with a diameter of 10 cm is able to ensure the functioning of the rain water drain of a private house for 50 years, if it is not broken mechanically.
Rules for the laying of closed rainwater:
- the slope of the pipeline is close to the drain collectors, i.e.within 1mm per running meter;
- from the freezing and deformation pipe assembly should protect the pillow( a mixture of gravel and sand) with a thickness of 7-10 cm;
- filtration of rainwater at the outlet of the drainpipe into the receiving well is desirable, but not necessary;on the one hand you protect your communications from large debris( leaves, insects, sparrows), with an arc - increase the hydraulic resistance of the drain;The
- drainage well of the storm shower should be available for regular inspection and cleaning, as well as the output of the outlet manifold.
What not to do with the mixed scheme
The most common case when you really want to combine all the summer cottage sewage system into one system and give out to the collective collectors pure tears. It does not work out, because such sewerage pipelines operate according to a completely different principle, and only a brave person can afford to connect drainage to the sewers to the sewage system.
The rainwater drainage( mixed rain) in a mixed version is a combination of the two previous cases:
- surface runoff does not have direct access to storage tanks, but simply penetrates into the upper aquifers;We explain: the snow melts, it disappears into the ground, the rain has passed, everything has dried up;
- drains of the house are withdrawn into the pipeline, laid to the nearest collector( gutter, stream, river);
- combination of plastic open troughs with recessed pipes on non-pressure sections makes such wiring practical for revision.
One misfortune, there is such a simple outlet channel, which is connected to the rain drain, close on the household septic tank in the hope that everything will be cleared, as soon as rain breaks. The pressure capacity of an autonomous sewer for a private home is not unlimited. See how Italy or Hungary is drowning in storm drains. Why do you need such problems?
