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Defining the desired pressure
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, where
(annex 2, СНиП).
Guaranteed pressure is more than desired pressure by 0.38 m (40-39,62), that ensures water supply to all water gathering devices under normal conditions.
Sewerage system
In building is designed economically-domestic sewerage for removing of contaminated sewer water from sinks, baths, sinks and toilets that are installed in each apartment. System of sawerage that is designed consists from the internal and the yard networks and sanitary-technical devices.
Yard network is design from cast iron pipes (ГОСТ 6942.1-80), because it is located above the plumbing and crosses it in two places (Figure 3.72). Yard network is connected to the street network in sewerage wells number 4. Before the red line of building it’s designed control well (№ 3).
Internal sewer network is designed with cast iron tubes and fason parts (ГОСТ 6942.1-30-80). In the building it is taken 8 sewer pipes. In the posts at a height of 1 m from the floor are installed revisions of the ground, last and after two floors. At issues and outlet pipe, where the contaminations are possible the cleaners are installed. Exhaust part of the post is removedobove the roof on 0.3-0.5 m (Figure 3.71).
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