Main design decisions

Architectural and space-planning solutions

The bowl of the fountain is located on the central square of the park at the intersection of three planning axes (two alleys of the park and the main planning axis - avenue), the fountain control chamber is designed under a part of the square with the ventilation shafts for supply and exhaust ventilation on the adjacent lawn with shrubs. The shafts are made in the form of metal cylinders with a head, the color scheme is selected according to the color scheme. The bowl of the fountain, round in plan, with a diameter of 40 m, is a recessed structure made of water-resistant reinforced concrete with a protruding part in the form of a cylinder in the center. The non-buried part of the bowl (side and central part) has a profiled granite cladding (color - Balmoral Red) with appropriate waterproofing. The bowl in the section has 3 levels, the maximum depth is 1,56 m (in the central part), the minimum depth is 0,5 m (at the side). The bottom has a slope towards the center, where a pit is located for the installation of pumping equipment. Distribution manifolds and all fittings located in the fountain bowl are made of stainless steel. Along the perimeter of the bowl, the working draft provides for a blind area with a coating of granite slabs 1,5 m wide and rain gutters. The fountain control chamber is a reinforced concrete underground structure with plan dimensions of 8,3 x 20,7 m. The clear height of the chamber premises is 3 m. sewers). Hatches are installed at the level of the stuffed covering of the area. In the first section of the chamber there is an electrical room and a technical room, in the second - equipment for water treatment, a filtration system for the circulation water supply of the fountain, a water meter unit. The division of the chamber into 2 sections is provided in order to prevent flooding of the switchboard in the event of an accident in the water treatment equipment. In case of an accident in the second section, pits in the floor and pumps for removing water are designed. The fountain control chamber provides for heating, ventilation, air conditioning. Finishing of the premises - painting with latex paint.

Structural and space-planning solutions

Responsibility level – II, normal. The working draft provides for the dismantling of a reinforced concrete decorative vase at the fountain construction site. The bowl of the fountain is designed from monolithic reinforced concrete class B25, W8, F200 with side walls 500 mm thick, lined with granite slabs and pedestals. The relative elevation of 0,000 is taken as the absolute elevation of 3,480 m. The control chamber is a free-standing box-type underground structure made of monolithic reinforced concrete B25, W8, F150. External walls 300 mm thick, internal - 200 mm. Coating - 300 mm thick. The relative mark of 0.000 is taken as the absolute mark of 2,900. The calculation of building structures was carried out using the Lira 9.4 program. The foundations were designed based on the materials of engineering and geological surveys carried out in 2007. The foundation of the fountain is a multi-level monolithic reinforced concrete slab 250÷400 mm thick, made of concrete B7,5 80 mm thick on a sand bed 200 mm thick, compacted in layers. The base is bulk soil with a design resistance of 1,0 kg/cm2. The average pressure under foundations is 0,4 kg/cm2. The foundation of the control chamber is a monolithic reinforced concrete slab 400 mm thick for concrete preparation from B7,5 concrete 100 mm thick. At the base there are silty sands of medium density with a design resistance of 2,0 kg/cm2. The average pressure on the sole of the foundation is 0,5 kg/cm2. The maximum groundwater level is at the level of 0,5 m from the ground surface. The working draft provides for pasting waterproofing of the chamber in the form of two layers of isoplast. The standard freezing depth is 1,45 m. To prevent freezing of soils at the base of structures, the detailed design provides for the insulation of soils under the foundations and on the outside of the walls of underground structures with 100 mm thick foam plastic. 6.2.3. Engineering equipment, engineering networks, engineering activities: Heating with the use of electrical energy is designed for technical rooms. Heating appliances (radiators from Thermor (France) are placed along the outer wall. Ventilation system of technical premises - forced-air and exhaust with mechanical stimulation, calculated according to the frequency of air exchanges. Placement of ventilation equipment is provided under the ceiling of serviced premises. Outside air intake and exhaust air discharge are provided through ventilation shafts installed on the lawn. Distribution of fresh air throughout the room and removal of exhaust air - through adjustable ventilation grilles. For ventilation systems, equipment from the following manufacturers was selected: duct ventilation equipment - Systemair (Sweden); air distribution fittings, control fittings - Arktika (Russia). To maintain the required temperature in the control room, air conditioning is provided based on the Electrolux mobile air conditioner. The air conditioning system allows you to provide the required temperature, cooling the air in the room during the summer season. Air conditioners are equipped with remote controls. With the help of a flexible hose, the hot air is vented to the atmosphere. The working draft adopted measures for noise suppression, as well as fire-fighting measures. The water supply to the fountain is provided by one input d125 from the shifted water supply d500 mm along Morskoy pr., pipe material - PE 100 SDR 17 GOST 15899-01. Water consumption is: 367,94 m/day, 800 m/day. (3 times per season). The productivity of the circulating system is 44603,4 m3/day. The water treatment system includes a coarse mechanical filter, a dispenser for reducing the oxidant, an automatic filtration and iron removal unit. To ensure the height of the jets of fountains, various groups of pumps are installed. The working draft provides for the diversion of conditionally clean effluents to empty the fountain. The flow rate is 367,94 m/day, 800 m/day. (3 times per season). The working draft provides for: installation of a ventilation control panel (SHUV), from which the following are connected: supply system fan П1 Р = 0,29 kW; electric heater HEC1 R = 9,0 kW; exhaust fan В1 Р = 0,23 kW; air conditioners K1 and K2 according to P = 2,0 kW. supply air temperature control is designed in automatic mode depending on the outdoor air temperature and the temperature in the controlled room. automatic shutdown of ventilation in case of fire. Power supply is provided in accordance with the technical specifications. The working project provides for the laying of 4 cable lines APvBbShp 4 x 185. The length of the route is L = 0,050 km. For the reception and distribution of electricity, a main switchboard was designed, including one section of busbars with a set of automatic switches to protect outgoing lines. Structurally, the main switchboard is designed in the form of floor-mounted metal cabinets, in which the following are installed: circuit breakers, thyristor converters, RCDs, artistic lighting power supplies. The control system of the fountain complex is designed in manual and automatic modes. Automatic mode provides: switching on and off the fountain complex according to the schedule; protection of pumps from "dry running"; control of the water level in the fountain bowl; turning on the backlight at dusk; control of pumps for pumping water from the pits of the control chamber. For the device of a group network within the technical premises of the fountain complex, VVGng cables laid along cable trays were selected. The equipment in the fountain bowl is powered by a cable line (cable H07RN-F). Electricity metering - in the main switchboard using measuring current transformers TSHP-0,66 and an electricity meter of the TsE2727 type.  The working draft provides for the organization: illumination of water jets in the fountain bowl - with AquasSlim and SinLight lamps: for voltage - 12 V; working lighting of the control chamber - Legrand100 luminaires with energy-efficient CFL lamps for 220 V; emergency lighting of the control chamber - LZ218 luminaires with built-in batteries for 220 V; repair lighting, through step-down transformers YATP-0,25 for a voltage of 36 V. In the working project, a reactive power compensation unit of 200 kvar was designed. The working draft provides for: connection of the ground bus of the main switchboard to the ground loop of the BKTP "Fountain", (see the CL kit); arrangement of a potential equalization system, connection to the ground bus of all metal utilities (pipes, ventilation ducts, etc.); connection of electrical receivers placed in the fountain bowl through residual current devices (RCD); The operating voltage for fixtures placed in the fountain bowl is not more than 12 V. The calculated load is S = 557,62 kVA. Power supply category III. The connection of the ground bus of the main switchboard to the ground loop of the BKTP "Fountain" is provided for by 2 lines of the st. strip 40 x 4. The length of the route L = 0,025 km. The working design of the automatic installation of aerosol fire extinguishing and burglar alarms was developed on the basis of the design assignment: As the main fire extinguishing system, the Orion system was adopted based on the equipment of the NVP Bolid in the following composition: S2000 control panel - 1 pc., S2000-ASPT device - 4 pcs., S2000-4 device - 2 pcs., S2000-IT unit - 2 pcs. . Fire detection sensors: smoke IP212-3SU - 16 pcs., thermal IP101-1A - 16 pcs., manual IPR-3SU - 4 pcs. To extinguish the fire, fire-extinguishing aerosol generators of the AGS type were designed - 6 pcs. For fire notification in the working project, light fire annunciators of the SP-12 type were adopted - 12 pcs., Sound fire annunciators of the OOPZ-24 type - 4 pcs. The control of the fire extinguishing system of the chamber is designed in manual and automatic modes. Automatic mode provides: issuance of sound and light signals “AEROSOL GO OUT”, while after a specified time (if one of the doors is not open) the fire extinguishing system is automatically started in the room in which the fire occurred, and before entering the room the sign “AEROSOL DO NOT ENTER” lights up; if the door to the room is open or opened before the end of the sound signal, the “AUTOMATIC DISABLED” light board lights up and the system waits for the door to close, after which the start is repeated. In manual mode, the start is made after the manual fire detector is triggered. For the fire alarm distribution network, VVGng-FRLS cable was selected. To organize a security alarm system, it is planned to install S2000-4 devices - 2 pcs. with IO102-2 sensors on the entrance hatches. For fire and burglar alarm equipment, battery backup is provided for 24 hours in standby mode and 3 hours in "alarm" mode.