Студента группы Пд 212 (4) Досжанова Алина г. Алматы


External water supply and sewerage networks



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7. External water supply and sewerage networks

Drawings of the NVK brand were made on the basis of technical specifications No. 1863-09 dated 17.09.2009, issued by KSE "Atyrau Vodokanal" in Atyrau, and in accordance with the requirements of SNiP RK 4.01.02-2001 " Water supply. External networks and structures "and SNiP 2.04.03-85" Sewerage. External networks and structures".


The water supply source is a main water line  500 mm. A water meter is installed at the inset point in the well. A sunroof with a locking device. The network provides water wells with shut-off valves for connecting consumers. For draining water in low places and for releasing air at upper tipping points. Water metering units are provided at building entrances.
External fire fighting is carried out from the fire tanks by fire trucks located in the fire station.
The sewerage system is designed in the projected septic tanks.
Plastic pipes according to GOST 18599-2001  50 mm are used for the water supply system, and steel pipes and fittings for them are used in wells. For sewer outlets, plastic sewer pipes are used – type 1 Firat Plastik. Pipes are included in the part of the building's Internal Control system.
Steel pipelines and cases laid in the ground, as well as steel fittings in wells, are covered with insulation of the type - "Highly reinforced" according to GOST 9.602-89.
On the well at the connection point, install a cover with a lock according to the technical specification.

8. Heating, ventilation, air conditioning

8.1. Administrative building and fire station

Heating

Heating is provided by cast iron radiators of the H brand-2-75-500. The heating system is single-pipe, with horizontal wiring.


Calculated parameters of outdoor air:

  • cold period t h = -25°C (security 0.92);

  • warm period t h = +31.2°C (security 0.95).

Calculated parameters of the internal air:
cold period:

  • fire truck garage premises 5 ± 2 °C;

  • administrative premises 18 ± 2 °C.

The heat supply source is the planned boiler house.
Parameters of the heat carrier – water with a temperature T = 90-70 °C.



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