Domestic water-supply system
Shop drawings of water-supply system has been made.
Domestic water-supply system
Technical decisions
The technical decisions accepted in the working design, correspond to the requirements of ecological, sanitary - hygienic, fire-prevention and other norms of Russian Federation, and provide safe for life of the people operation of object at observance of the measures, stipulated by working drawings. The present part is performed on basic of design stage "P" tender documentation, fire-fighting technical conditions and water supply and drainage technical specifications, in the PH part the water supply, drainage and fire-fighting systems or the building are reviewed.
The following systems are provided in the designed building:
- Domestic water-supply system
- Hot water-supply system
- Sewerage system
- Process drainage system
- Rah water drainage system
- Fire-fighting hose reel system
- Automate sprinkler system
- Drencher screen system Domestic water-supply system
The water supply of the designed building is provided from existing outside domestic water-supply utilities. The water metering unit for cold water is installed on intents 2DN200. A by-pass line with installation of gate valve is provided on the water metering unit. The domestic and fire-fighting water supply are designed independent. Guarantee pressure in external utility is 20 m. Booster pimps are provided for pressure assuring in the domestic water supply system and located h the pump room on the -2 floor.
The water metering unit with pressure regulator is provided on connection to the restaurant. Pressure regulators are also provided for all consumers from -1 to +5 levels. The water supply system is designed of galvanized steel pipes DN-50 urn G03T 5262-75* (risers and water-main pipelines) and of electric-welded galvanized pipes DN 65-200 mm G0ST10704-91*. All pipes are covered by thermal insulation ‘Termaflex" 15 mm thin.
Hot water-supply system
The hot water supply of the designed building is provided from central heating plantroom. Hot water meters are 'installed on direct and return pipes to the central heating plantroom. Hot water supply system is designed with circulation circuit.
Hot water supply system is designed of galvanized steel pipes DN 15-65 mm GOST 5262-75* (risers and water-main pipelines). The water metering unit with pressure regulator is provided on connection to the restaurant. Pressure regulators are also provided for all consumers from -1 till +5 levels. All pipes are covered by thermal insulation "Termaflex" 15 mm thick.
Sewerage system
Sewerage is intended for foul water outlet from sanitary devices in lavatories. Sewerage of floors over the ground is designed self-flowing of nonpressure PVCpipe DN 50-9100 mm "Wavin" and cast-iron nonpressure pipes DN 509100 “Duker". Sewerage of underground floors is designed pressure of cast-iron pressure pipes DN 50-Ю0 "Duker". For the foul water drainage on the -2 level pimps are designed. The connection of the foul water drainage is provided to the external domestic drainage utilities.
Process drainage system
Process drainage system is intended for foul water outlet from the restaurant. Process drainage system is designed with pimp of cast-ton nonpressure ppes DN 100mm "Duker". The fat separators are installed in the technical гост on the -2 level for foul water treatment. After cleaning the foul water are forward to the tank of drainage pump. The drainage of foil water is connected to the external domestic drainage utilities by separate outlet.
Rain water drainage system
The rain water drainage system is intended for the drainage of rain and melted water from the roof and for outlet of foil water from pits of the underground part of the building. The rain water drainage system from the roof of the complex is designed gravitational. Calculation of the rain water drainage system are performed for figures q20=80 l/sec, q5=214 l/sec.
Accidental flows and flows after fire- fighting activation are gathering from the floor of the parking and the pump room in the pits. Spooling of water from the pits is performed by a drainage pump to the external rah water drainage utilities. The rain water drainage system is designed of cast-iron pressure pipes DN 100mm “Duker". The drainage of foil water is provided in external rah water drainage unities Fire-fighting hose reel system in the underground parking the separate fire-fighting hose reel and automatic sprinkler system are provided with their own pimps group.
Design discharge for underground parking fire-fighting is 2 jets of 5.2 l/sec. The installation of fire cases with fire-cocks DN 65nm, fire-hoses 20m length and 2 fire extinguishers are provided h the underground parking. In the office part of the building the separate hose reel system and automatic sprinkler system are provided with me ping groups. Design flow rate for office part fire-fighting is 5 jets of 2.5 l/sec. The retaliation of fire cabinets with fire-cocks DN 50mm, fire-hoses 20m length and 2 the extinguishers are provided in the office part.
Automatic sprinkler system
The water supply of the designed building is provided from existing outside domestic water-supply utilities. The connection of automatic sprinkler system is provided in inlets before water metering unit. Automatic sprinkler system of the underground parking Sprinkler system network should be divides m 5 sections (directions). All sections are supplied from 2 sprinkler control valves. On each direction the flow switches should be installed. Rated irrigation intensity is 0.12 l/sec. Designed area of irrigation is 240 sqm.
Drencher screens above fire-rated gates of underground parking are controlled by separate control valves. Electromagnetic valves are installed m each screen for automatic operation. Rated screen intensity 1 l/sec/m. screens are performed with two-stream lines of sprinkler installation. Two pumps are provided for pressure guarantee of automatic sprinkler system of parking, and jockey-pump is provided for keeping of constant pressure in the system. Automatic fire fighting water-supply system is designed of electric-welded pipes DN 159Б0 mm G0ST10704-91*.
Automatic sprinkler system of the office part and atrium
Sprinkler system network should be divides m 9 sections (directions). All sections are supplied from 9 sprinkler control valves. Atrium divides building m two parts, and it becomes the separate direction and has its own sprinkler control valve. Rated irrigation intensity will be 0.08 l/sec. Designed area of irrigation will be 120 sqm. In corridor, which fans to atrium, irrigation intensity is 0.12 l/sec.
Sprinkling of atrium is provided under bridges, and around the periphery m the level of sixth floor. Two pumps are provided for pressure guarantee of automatic sprinkler system of levels above the (pound, and jockey-pimp is provided for keeping of constant pressure in the system. Automatic sprinkler system is designed of electric-welded pipes DN Б9150 mm G0ST10704-91*.
MATERIALS
All equipment and materials used for construction of the multifunctional center should:
- be certified for the use h the Russian Federation;
- comply with the Contract requirements;
- be approved by Client's and General Contractor representatives.
The design shows the recommended manufacturers and type of equipment and materials, which comply with tender specification. Replacement of equipment used in the design by similar in technical parameters is possible only if the above conditions are followed.